Motion Control Drives

E CYCLO®

High Precision Gearboxes
ECY Series

No.F1001E-2

Table of Contents
1. Construction............................................................. 2
2. Features........................................................................ 3
3. Nomenclature.......................................................... 4
4. Line up........................................................................... 4
5. Speed Ratio and Rotation Direction........ 4
6. Standard Specifications.................................... 5
7. Operating Principle.............................................. 5
8. Rating............................................................................. 6
9. Engineering Data................................................... 7
		 9-1. Angular transmission error
		9-2. No Load Friction Torque on Output Shaft
		 9-3. Stiffness and Hysteresis
		 9-4. No Load Running Torque		 9-5. Efficiency
10. Main Bearings........................................................ 10
11. High Speed Shaft Radial Load and Axial Load........... 12
12. Selection................................................................... 14
13. Notice for Designing........................................ 16
		 13-1. Assembly Method
		13-2. Bolt Tightening Torque and Allowable Transmission Torque		 13-3. Assembly Procedure		 13-4. Lubrication
14. Outline Drawing.................................................. 18
15. Other............................................................................ 21
		Warranty
		 Safety Precautions

E CYCLO® High Precision Gearboxes

ECY Series

CYCLO® Drives were created and developed by Sumitomo.
This unique reducer structure by using teeth trochoid tooth
profile* is being used in industrial robots and transfer
devices all over the world.
The ECY Series, which was developed as a compact reducer
for non-backlash applications, fuses the strain wave gearwith the engagement theory of the CYCLO Drives, thus
realizing high rigidity and a compact structure that were
unavailable until now.
* Epitrochoid parallel curves

1. Construction

Main bearing(Cross roller bearing)

Oil seal for slow speed shaft

Thrust plate
Slow speed end cover

Oil seal for high speed shaft

Bearing for eccentric

Eccentric high speed shaft
Bearing for high speed shaft
High speed end cover

Cycloid spline

Outer race
Output ring gear housing

Ring gear housing

Figure 1-1 Construction

2

2. Features
High rigidity

Allowable Peak Torque (Nm)150

Generalstrain wave gear A

125

Generalstrain wave gear B

10075

ECY Series

50
25
0
60

80

100

120

140

Torsional Stiffness (Nm/arc min)Compact, and high torque15

ECY Series
10

5

0

60

External dimensions (mm)It has high torque compared to that of a general wave gear
(equivalent size), contributing to make the device morecompact.

Ratcheting resistance (safety in the event of an overload)

80

Load torque (Nm)External gearprofile600

Ratcheting

400
200
0

General strain
wave gear

140

Reasons for above-average strength

1200

ECY Series

120

The torsional stiffness is larger than that of a general strain
wave gear (equivalent size).Thus it can increase the device's
strength and reduce vibration, etc.

Ratcheting torque measurement

800

100

External dimensions (mm)

1400

1000

General strain
wave gear

Examples ofgeneral strain
wave gear

ECY Series

Cup type/Hat type

Cylindrical type

Tooth contact Partly gear meshing Fully gear meshingin the tooth(≒100%)(30-50%)
trace direction
Elliptical bearing
structure

Ball bearing

Roller bearing

Torsion angle
The structure suppressing ratcheting (situation where
teeth do not engage smoothly) realizes high safety underoverload.

Large diameter hollow of high speed shaft

The diameter of thehollow shaft of thehigh speed shaft has
been increased,permitting effective
utilization of thespace between thewall of the hollow
shaft and your cables,
shafts, and so on.

The structure differs from a general strain wave gear,
realizing high strength.

Reduction of assembly work performed by a user

Because the highspeed shaft is
supported by the
reducer and thegrease is packed in asealed structure, it iseasy to mount theshaft on the device oron the motor.

33. Nomenclature
E CY

203

–

–

–

50

Reduction ratio 50, 80, 100
Auxiliary type
Frame size 203, 205, 107
Special specification Standard : Blank, Special specification : S
Series symbol
Symbol of E CYCLO

4. Line up● : Production possible range

Table 4-1Frame size

Reduction ratio
50

80

100

203

●

●

●

205

●

●

●

107

●

●

●

5. Speed Ratio and Rotation Direction
The rotation direction and speed ratio are as illustrated in the figure below depending on the fixed, input, and output locations.
[1]

[2]

Input:High speed shaft
Output:Output ring gear housing
Fixed:
Ring gear housing
i = −1 / n

[4]

[5]
Input:
Output ring gear housing
Output:High speed shaft
Fixed:
Ring gear housing
i=-n

[3]

Input:High speed shaft
Output:Ring gear housing
Fixed:
Output ring gear housing
i=1/(n+1)

Input:
Output ring gear housing
Output:Ring gear housing
Fixed:High speed shaft
i=n/(n+1)[6]
Input:
Ring gear housing
Output:High speed shaft
Fixed:
Output ring gear housing
i=n+1

[7]
Input:
Ring gear housing
Output:Output ring gear housing
Fixed:High speed shaft
i=(n+1)/n● i : Speed ratio (= [Output speed]/[Input speed]) *"-" indicates opposite direction.
+ and - of the speed ratio i indicate that the input and output are in the same and opposite directions, respectively.
● n : Reduction ratio.

Figure 5-1

4When the high speed
shaft, ring gear housing
and output ring gear
housing all rotate, acombination of 1 to 6 isnecessary.

6. Standard Specifications
Table 6-1
Lubrication

Grease lubrication
Grease is filled before shipment from the factory. For details, see 1 3-4 "Lubrication".

Ambient
conditions

Ambient temperature–10 to +40℃ (Start failure may occur depending on the speed and torque of the motor in use, so
consult us if the reducer will be used at about –10 to 0°C.)

Ambient
humidity

85% or less. No condensation.

Altitude

1000m or lower

Atmosphere- Free from corrosive gas, volatile gas or steam.
- Dust-free and well-ventilated area.

Mounting
location- Indoor (Free from dust, water, other liquids)- Mounting in conditions other than the above requires adherence to special specifications. Please consult with us.
- Mount in a location that enables easy operation, such as inspection and maintenance.
- Mount on a sufficiently rigid member.

Mounting
direction
Painting

Mounting direction is free.
Paintless*A lthough the packing material used has good anti-rust performance, carry out rustproofing of each part separately
after unpacking the product and in case of long-term storage.

7. Operating Principle
As a principle rule, the ECY Series consists of 4 parts.
• The bearing for eccentric deforms the cycloid spline into an elliptical shape.
• The major axis of the cycloid spline that was deformed into an elliptical shape engages the fixed ring gear housing and the output ringgear housing.
• When the fixed ring gear housing is fixed and the bearing used for the eccentric body is turned 1 rotation in the clockwise direction, thecycloid spline will rotate in the counterclockwise direction by an amount corresponding exactly to the difference in the number ofteeth, while the elastic deformation is changing.
• This amount of rotation is taken off at the output ring gear housing.

Main bearing(Cross roller bearing)

Output ring gear housing(Same number of teeth asthat on the cycloid spline)

Bearing forhigh speed shaft

Cycloid spline

Ring gear housing(The number of teeth is 2 morethan the number of teeth on thecycloid spline)

Fixed ring gear
housing side

Output ring gear
housing side

0°

120°

240°

360°

Figure 7-15

8. Rating
Table 8-1 Rating table
Allowable peak
Maximum value ofRated output
torque at acceleration
average load torque
Frame Reduction
torqueand decelaration(Upper row/N-m)(Upper row/N-m)
size
ratio
(Upper row/N-m)(Lower row/kgf-m)(Lower row/kgf-m)(Lower row/kgf-m)

203

205

107

Allowable maximum
Allowable
momentary torque maximum input(Upper row/N-m)
speed(Lower row/kgf-m)(r/min)

50

21
2.1

44
4.5

34
3.5

91
9.3

80

29
3.0

56
5.7

35
3.6

113
11.5

100

31
3.2

70
7.1

51
5.2

143
14.6

50

33
3.4

73
7.4

44
4.5

127
12.9

80

44
4.5

96
9.8

61
6.2

165
16.8

100

52
5.3

107
10.9

64
6.5

191
19.5

50

39
4.0

98
10.0

55
5.6

186
19.0

80

63
6.4

137
14.0

87
8.9

255
26.0

100

67
6.8

157
16.0

108
11.0

284
29.0

Allowable
average input
speed(r/min)Equivalent on input shaft
Moment of inertia/ GD2(X10 kg･m ) (X10 kgf･m )
-4

2

-4

2

Mass
(kg)

8500

2500

0.13

0.52

0.9

7300

2500

0.30

1.20

1.2

6500

2000

0.62

2.48

1.6

1. Rated torqueThe rated torque indicates the allowable output torque at the output flange at an input speed of 2000 r/min.
2. Allowable peak torque during acceleration and deceleration
This is the peak torque allowed during normal acceleration and deceleration.
3. Allowable maximum momentary torqueThis is the allowable value of the impact torque that is applied instantaneously to the output shaft by an emergency shutdown or an
external shock etc.
Indicates the value when 104 deflection cycles are applied to the cycloid spline throughout the entire life of the product.
N=1042· n · t
60

N : Allowable speed under an impact torque (r/min)n : Input speed when an impact torque is applied (r/min)
T : Time during which an impact torque is applied (s)4. Allowable maximum input speed and allowable average input speed
Although use is possible within the range of the maximum allowable input speed, the operation cycle is limited by the allowableaverage input speed.
When a high duty ratio is used, there will be a risk of the E CYCLO overheating, causing it to break. To prevent this, when using the E
CYCLO, ensure that its surface temperature is no higher than 40°C above the ambient temperature, or is no higher than an absolutevalue of 60°C, whichever is lower, as a general rule.
5. Moment of inertia, GD2This indicates the value of the moment of inertia and GD2 on input shaft (high speed shaft) of each model.
When converting these values to inertia (kgf･m･s2), divide by g (9.8 m / sec2) for moment of inertia, and by 4g (4 x 9.8 m/s2) for GD2.

6

9. Engineering Data
9-1. Angular transmission error
Angular transmission error: This is the difference between the theoretical output rotational angle and the actual output rotational angle
when an arbitrary rotational angle is applied to the input under a no-load condition.
θer(Angular transmission error) =θin (Arbitrary input rotational angle)− θout (Actual output rotational output)i (Reduction ratio)

60

θer

Rotational angle error (sec.)

Figure 9-1 Angular transmission error value

30
0
−30
−60

0°

90°

180°
One rotation of the output shaft (degrees)(Measurement conditions)

Model
Load condition

Table 9-1 Angular transmission error

270°

360°

ECY-107-80
No load(arc sec)

Frame size
Reduction ratio
203
205
107
50
±45
±45
±45
80
±45
±45
±45
100
±45
±45
±45
Note :	The values indicate the specification value. Arc sec indicatesthe angle "second."

9-2. No Load Friction Torque on Output Shaft
No load friction torque: This indicates the torque required to start rotation from the output side of reducer without load.
Table 9-2 No load friction torque on output shaft(N･m)Frame size
Reduction ratio
203
205
107
50
20
21
22
80
31
34
40
100
33
45
51
Note : 1. Indicates the representative value after run-in.
2. Lubrication: Our standard grease79-3. Stiffness and Hysteresis
Hysteresis curve: This is the relationship between the load and the output side torsion angle when the high speed shaft is fixed, the rated
torque applied to the output side, and the load subsequently removed.
Lost motion: Torsion angle under the load of the rating torque × ±3%
Hysteresis loss: The difference between the torsion angles at zero torque along the hysteresis curve
Stiffness: Inclination of the straight line joining 2 points on the hysteresis curve, in the region between arbitrary torque values
Torsion angle

Torsion angle
Lost motion

K3
Torque-100%

100% (rated)

K2
θ3

θ2
θ1

Hysterisis loss

K1
0

-3%

3%

Table 9-3 Lost motion

Figure 9-3 Classification of stiffness(arc min)Frame size
Reduction ratio
203
205
107
50
1.0
1.0
1.0
80
1.0
1.0
1.0
100
1.0
1.0
1.0
Note :	The values indicate the specification value. Arc min indicatesthe angle "minute."

Table 9-4 Hysteresis loss(arc min)Frame size
Reduction ratio
203
205
107
50
2.0
2.0
2.0
80
2.0
2.0
1.5
100
2.0
2.0
1.5
Note :	The values indicate the specification value. Arc min indicatesthe angle "minute."

Table 9-5 Stiffness
T1
T2

Symbol

T3
K1

50

K2
K3
θ1
θ2
θ3
T3
K1

80

K2
K3
θ1
θ2
θ3
T3
K1

100

K2
K3
θ1
θ2
θ3

Unit
N・m
N・m
N・m
N・m/arc min
X104N・m/rad
N・m/arc min
X104N・m/rad
N・m/arc min
X104N・m/rad
arc minarc minarc minN・m
N・m/arc min
X104N・m/rad
N・m/arc min
X104N・m/rad
N・m/arc min
X104N・m/rad
arc minarc minarc minN・m
N・m/arc min
X104N・m/rad
N・m/arc min
X104N・m/rad
N・m/arc min
X104N・m/rad
arc minarc minarc min

Note :	arc min indicates the angle "minute."
The values indicate the representative value.

8

T2

With respect to the rated value

Figure 9-2 Hysteresis curve

Reduction ratio

T1

203
3.9
12
34
3.3
1.1
3.5
1.2
4.4
1.5
1.2
3.5
8.5
43
3.9
1.3
4.0
1.4
5.0
1.7
1.0
3.0
9.2
54
3.8
1.3
4.3
1.5
5.4
1.9
1.0
2.9
10.7

Frame size
205
7.0
25
56
5.3
1.8
5.5
1.9
7.1
2.4
1.3
4.6
9.0
74
6.6
2.3
7.4
2.5
8.5
2.9
1.1
3.5
9.3
82
7.7
2.6
8.2
2.8
9.5
3.3
0.9
3.1
9.1

107
14
48
98
10.1
3.5
10.3
3.5
12.0
4.1
1.4
4.7
8.9
137
11.6
4.0
12.5
4.3
14.4
5.0
1.2
3.9
10.1
157
10.7
3.7
11.0
3.8
15.9
5.5
1.3
4.4
11.3

T3

Torque9-4. No Load Running TorqueNo load running torque: This means the torque on the input side required to rotate the reducer without a load.

No load running torque (N・cm)

70
60

107

50
40

205

30

203

20
10
0

0

1000

2000

3000

4000

Input speed (r/min)Figure 9-4
Note : 1. The value indicates the representative value after run-in.
2. Lubrication: Our standard grease
3. Temperature of the E CYCLO's surface: Approx, 40°C

9-5. Efficiency
Efficiency: This is the ratio of the actual input torque to the theoretical input torque when the rated torque is applied to the output side.
The efficiency varies according to the input speed, load torque, grease temperature, reduction ratio, etc.
The figure shows the values of efficiency with respect to the input speed at the rated torque when the temperature on the casing isapproximately 40°C.
When using the E CYCLO under a load torque other than the rated torque, correct the efficiency using the efficiency correction curve
shown in the Figure 9-8.

203

75

75

70

70

65

65

60
55
50
45

60
55
50
45

40

40

35

35

30

0

1000

2000

205

80

Eciency (%)

Eciency (%)

80

3000

30

4000

0

1000

Input speed (r/min)Figure 9-5

Efficiency correction curve

Eciency (%)

70
65
60
55
50
45
40
35
1000

2000

3000

4000

Input speed (r/min)Figure 9-7
Note : 1.	The efficiency value is indicated as the representativevalue after run-in, and is displayed to some range.
2. Lubrication: Our standard grease
3. Temperature on the casing : Approx, 40°C

500r/min1

1000r/min2000r/min

0.9

3500r/min

0.8
0.7
0.6

0

4000

1.1

75

30

3000

Input speed (r/min)Figure 9-6

107

80

2000

0

0.2

0.4

0.6

0.8

1

Torque ratio(Load torque/Rated torque)
Figure 9-8
Corrected efficiency value = Efficiency value × Efficiency correction factor
Note : 1.	If the load torque is less than the rated torque, the efficiency
value will be smaller.
2.	If the torque ratio is 1.0 or more, the efficiency correction factor
will be 1.0.

9

10. Main Bearing
Table10-1 Main bearing specifications
Pitch circle
diameter of roller

OffsetBasic dynamic
rated load

Basic static
rated load

dp

R

C

C0

m

m

N

N

203

0.05470.01875

9000

205

0.06300.01940107

0.07200.01985

Maximum Radial load (Frmax)≦ Allowable radial loadNO

Maximum axial load (Famax)≦ Allowable axial loadNO

Allowableradial load

Allowable
axial load

Moment stiffness(representative value)

N・m

N

N

x104N・m/rad

N・m/arc min

18300

105

1300

1590

10.1

29.4

12900

19700

159

1700

1590

14.5

42.2

18100

30400

219

2050

3000

20.3

59.1

Frmax = Maximum radial loadFr

dp

Frame size

Allowable
momentLa

Famax = Maximum axial load

Fa

Maximum external moment (Mmax)≦ Allowable moment
Average radial load (Fra)
Average axial load (Faa)
Average external moment (Ma)NO

Lr

Mmax = Frmax・(Lr + R )+Famax・La* If the radial load and the axial load act in combination
with each other, ensure that the total load is within
the load value indicated in Fig. 10-2.

R

Figure 10-1

Fra =nA・tA・FrA10/3 + nB・tB・FrB10/3 + …nn・tn・Frn10/3

Faa =nA・tA・FaA10/3 + nB・tB・FaB10/3 + …nn・tn・Fan10/3

0.3

nA・tA + nB・tB + …nn・tn
0.3

nA・tA + nB・tB + …nn・tn

Ma= Fra・(Lr + R)+ Faa・La
nA・tA + nB・tB…nn・tn

Average output speed (nEo)nEo =Dynamic equivalent radial load (Pc)

Dynamic radial factor Xc anddynamic axial factor Yc

tA + tB + …tn

Faa
Fra + 2Ma/dp
Faa
Fra + 2Ma/dp

Pc = Xc・

2Ma

Fra +

dp

≦ 1.5
> 1.5

Xc = 1.0, Yc = 0.45
Xc = 0.67, Yc = 0.67

+ Yc・Faa

Table 10-2 Load factor fw
Calculation of the life of the main bearing (L10)

Static equivalent radial load (Po)

Static safety coefficient (fs)

10

L10 =

10

6

60×nEoPo = Frmax +

fs =

Co
Po

・

2Mmax
dp

C
fw・Pc

10/3

+ 0.44 Famax

Uniform load (No shock)Moderate shock
Heavy shock

1-1.2
1.2-1.5
1.5-3

Table 10-3 Static safety factor fs
When high speed accuracy is necessary
When there is vibration and/or shock
When the operating conditions are normal

≧3

≧2
≧ 1.5

2500

Allowable radial load (N)(0,2050)
2000(0,1700)
1500(0,1300)
205

1000(1590,618)

203
500

0

107

(1590,212)(1590,0)
0

1000

2000

(3000,0)
3000

4000

Allowable axial load (N)Figure 10-2

11

11. High Speed Shaft Radial Load and Axial Load
When mounting a gear or pulley on a high speed shaft, use the reducer within a range where the radial load and axial load do not
exceed the allowable values. Check the radial load and axial load of the high speed shaft according to the following formulas ([1] to [3]).
[1] Radial load Pr
Pr =

Tl
Pro
≦
Lf・Cf・Fs1
R

Pr : Actual radial load (N)
(N)

（式1）

Tl : Actual transmission torque on high speed shaft of reducer (N・m)
R : Pitch circle radius of sprocket, gear, pulley, etc. (m)[2] Axial load Pa

Pro : Allowable radial load (N)

Pao
Pa ≦
Cf・Fs1(N)

Pa : Actual axial load (N)（式2）[3] When a radial load and axial load coexist
Pr・Lf
Pa
+
Pro
Pao

（式3）

・Cf・Fs1 ≦ 1(Table 11-1)

Pao : Allowable axial load (N)(Table 11-2)

Lf : Load position factor(Table 11-3)

Cf : Coupling factor(Table 11-4)

Fs1 : Shock factor(Table 11-5)

Table 11-1 Allowable radial load Pro(N)
Frame size

Input speed r/min
4000

3000

2500

2000

1750

1500

1000

750

600

203

198

218

232

250

261

275

315

347

373

205

218

240

255

275

288

303

346

381

411

107

238

262

278

300

314

330

378

416

448

2500

2000

1500

1000

750

600

Table 11-2 Allowable axial load Pao(N)Frame size

Input speed r/min
4000

3000

1750

203

169

191

207

228

242

259

308

349

385

205

186

210

228

250

266

284

339

384

424

107

212

240

260

283

303

324

387

439

483

Note : 1.	The allowable radial load and the allowable axial load at an input speed of less than 600 r/min are the same as the values at 600 r/min.
2.	Complement the values of the radial load and axial load at an input speed that is not shown in the table, by using the following formula.

Allowable axial load

Allowable radial load

PrN = Pr2000・

2000
N

1/3

PaN = Pa2000・

2000
N

0.44

PrN : Allowable radial load for input speed N

PaN : Allowable axial load at input speed N

Pr2000 : Allowable radial load at an input speed of 2000 r/min

Pa2000 : Allowable axial load at an input speed of 2000 r/min

Table 11-3 Load position factor Lf
Frame size

L

L
(mm)

203

205

107

5

1.01

0.99

0.97

10

1.13

1.10

1.07

15

1.25

1.21

1.18

20

1.37

1.32

1.28

25

1.49

1.43

1.39

30

1.61

1.54

1.49

35

1.73

1.65

1.60

40

-

-

1.70

L (mm) when
Lf = 1(mm)

4.6

5.5

6.6

Note :	Using linear complementation, calculate the load
position factor Lf at load position L which is notshown in the table.

12

Pr

Pa

Figure 11-1 High speed shaft load position

Table 11-4 Coupling factor Cf
Load connection factor
Chain
Gear
Timing belt
V beltTable 11-5 Shock factor Fs1
Cf
1
1.25
1.25
1.5

Load Classification
Uniform load (No shock)Moderate shock
Heavy shock

Fs1
1
1–1.2
1.4–1.6

13

12. Selection
Figure 12-1 Load pattern

Evaluation of the load
characteristics

Output speed

nR
nB

nA

tA

tR

Calculation of the average
output torque

Time

tB

tO

(TE)

tP
T

Load torqueTA
TRnA : Average output speed
during acceleration
In the case of the above figure nA = nR
2nR : Output speed during normal running
nB : Average output speed during deceleration
In the case of the above figure nB = nR2

Temporary frame size selection

TimetA : Acceleration timetR : Normal running time
tB : Deceleration time
tO : Total running time
tP : Stand still time
T : Time cycle
TA : Acceleration peak torqueTR : Normal running torque
TB : Peak torque at braking

Evaluation of input speed

NO(Select larger frame size or lower the average load torque TE)

TaE : Maximum value of average load torque (Table 8-1)

TB

NO

NO

TE ≦ TaENO
Maximum input speed≦ Allowable maximum input speed

Calculation for average output speed(nEO)

Calculation for average input speed(nEI)

Evaluation of the peak torqueat acceleration and decelaration

Evaluation of the radial load andthe axial load of the high speed shaft

Evaluation of main bearing

Peak torque at accelerationand decelaration≦ Allowable peak torque atacceleration and deceleration

Radial loads of the high speed shaft NO≦ Allowable radial load

Maximum Radial load Frmax≦ Allowable radial load

P6 (Table 8-1)

P6 (Table 8-1)

P12 (Table 11-1)

Average input speed≦ Allowable average input speed

Evaluation of the shock torque

Axial loads of the high speed shaft≦ Allowable axial load

P6 (Table 8-1)

P10 (Table 10-1)
NO

Maximum axial load Famax≦ Allowable axial load

P12 (Table 11-2)

NO

Maximum external moment Mmax
≦ Allowable moment

P6 (Table 8-1)

NOP10 (Table 10-1)

104
N=
n
2・ ・t
60

Calculation of the lifeNOof the main bearing
Calculated life of the main bearing≦ Your requested life
P10
TOE : Rated torque of the selected model

203, 205
L10 = 10000・
107
L10 = 7000・

14NO

P10 (Table 10-1)

Shock torque≦ Allowable maximum momentary torqueCalculation of life

NO

TOE
TE
TOE
TE

10/3

・
10/3

・

2000
nEI
2000
nEI

Calculation for the running pattern in the figure 12-1
10/3

tA・nA・TA〇 Average load torque TE =

10/3

10/3

+ tR・nR・TR +tB・nB・TB
tA・nA +tR・nR + tB・nB

0.3

tA・nA + tR・nR +tB・nB
T
The longest operation cycle is 10min.

〇 Average output speed nEO =〇 Average input speed nEI = nEO・R

R : Reduction ratio

Selection Example
Make confirmation assuming , ECY-107-50 for the following specification.
(specification) TA : Peak torque at acceleration and decelaration
TR : Normal running torque
TB : Peak torque at braking
Shock torque :nA : Average output speed during acceleration/decelerationnR : Output speed during normal running
nB : Average output speed during deceleration
Necessary life

80N・m
30N・m
60N・m
160N・m
25r/min
50r/min25r/min
10000htA : Acceleration time
0.3s
3.0s
tR : Normal running time
0.3s
tB : Deceleration time
3.6s
tP : Stand still time
3.6s
to : Total running time
T : Time cycle
7.2s
Radial loads of the high speed shaft : 100N
Maximum external moment :150N・mMaximum radial load :500N

When using the E CYCLO, almost no shock is assumed.

(Calculation)

Average load torque TE =

10/3

10/3

0.3・25・80 + 3・50・30 +0.3・25・60
0.3・25 +3・50 + 0.3・25

10/3

0.3

= 40(N・m)

From Table 8-1, the maximum value of the average load torque of ECY-107-50 is TaE = 55 (N・m).
⇒ 40 (N・m) 55 (N・m), consequently ECY-107 is provisionally selected.
Maximum input speed nmax = 50・50 = 2500 (r/min)
Average output speed nEO =0.3・25 + 3・50 +0.3・25
7.2= 22.9 (r/min)

Average input speed nEI = 22.9・50 = 1146 (r/min)○ Check of maximum input speed 2500(r/min) ≦ 6500(r/min)○ Check of average input speed 1146(r/min) ≦ 2000(r/min)○ Check of peak torque at acceleration/deceleration 80(N・m ) ≦ 98(N・m)○ Check of shock torque 160(N・m ) ≦ 186(N・m)○ Check of radial loads of the high speed shaft 100(N) ≦ 361(N) (Lf, Cf, Fs1 = 1)
○ Check of allowable moment 150(N・m ) ≦ 219(N・m)○ Check of allowable radial loads 500(N) ≦ 2050(N)○ Check of main bearing(fw = 1.2) 36334(h) ≧ 10000(h)○ Confirmation of the static safety coefficient 6.5 ≧ 1.5○ Check of life

P6 (Table 8-1)
P6 (Table 8-1)
P6 (Table 8-1)
P6 (Table 8-1)
P12 (Table 11-1)
P10 (Table 10-1)
P10 (Table 10-1)
P10 (Table 10-2)
P10 (Table 10-3)

From Table 8-1, the rated torque of ECY-107-50 is TOE = 39 (N・m).
Life L10 = 7000・

39
40

10/3

・

2000
1146

= 11433(h) ≧ 10000(h)ECY-107-50 is selected based on the above consideration.

15

13. Notice for Designing
13-1. Assembly Method
Use spigot Ⓒ when assembling the input parts (pulleys and gears)
Use spigot Ⓑ for the assembly of the reducer output side, and use spigot Ⓐ for assembly of the casing.

A
B

C

Figure 13-1

13-2. Bolt Tightening Torque and Allowable Transmission Torque
Allowable transmission torque by bolt
Table 13 -1 shows the number, size and tightening torque of bolts when fastening the output part and input part of the E CYCLO withbolts.
At this time, it is possible to transmit the allowable maximum momentary torque shown in Table 13 -1.
Table 13-1
Tightening of the output ring gear housing
Frame size

Number and size ofbolts

Bolt PCD
mm

Bolt tightening torque

Allowable transmission torque by bolt

N･mkgf･cmN･mkgf･cm

203

16-M3

48.0

1.96

20

163

17

205

16-M3

55.5

1.96

20

189

19

107

16-M4

63.0

4.61

47

374

38

Tightening of the cross roller
Frame size

Bolt tightening torque

Allowable transmission torque by bolt

Number and size ofbolts

Bolt PCDmm

N･m

kgf･cmN･mkgf･cm

203

16-M3

68.0

1.96

20

232

24

205

16-M3

78.0

1.96

20

266

27

107

16-M4

87.5

4.61

47

520

53

Tightening of the eccentric high speed shaft
Frame size

Number and size ofbolts

Bolt PCD
mm

Bolt tightening torque

Allowable transmission torque by bolt

N･mkgf･cmN･mkgf･cm

203

6-M2

22

0.55

5.6

14

1.4

205

8-M2

24

0.55

5.6

20

2.0

107

6-M3

30

1.96

20

45

5.0

● Bolt: Use hexagon socket head bolts of strength class 12.9 of JIS B 1176.
●	Measure to prevent loosening of bolts: Use adhesive (Loctite 262, etc.) or a conical spring washer (JIS B 1252 Type 2).
Also, in order to prevent damage to the seating face of the bolts when tightening the E CYCLO, it is recommended that you use aconical spring washer intended for a hexagonal socket head bolt.
● Coefficient of friction: 0.15

16

13-3. Assembly Procedure[1]

Fix the reducer to the casing of machine with bolts.
(Spigot Ⓐ )* Ensure that the width of spigot Ⓐ is no more than the widthof the fixed ring gear housing.
Apply liquid gasket to the assembly surface a, if necessary.

A

Assembly
surface a

Figure 13-2

[2]

The pulley and other input parts are bolted to the high speed shaft.
(Spigot Ⓒ )CFigure 13-3

[3]Bolt the outside cover (including the output ring gear housing) to the output shaftof the device.
(Spigot Ⓑ )B

Notes : 1.	The bolts for mounting of the gear reducer shall be fastened by the specified fastening torque(See Table 3-1).
2.	When bolting the output shaft of the device to the external cover (including the output ring gear
housing), set the bolt length shorter than the tapping depth indicated on enlarged part A of theoutline drawing (refer to P18 to 20).
Recommended liquid gasket: ThreeBond Co., Ltd., Liquid gasket ThreeBond 1215

Figure 13-4

13-4. Lubrication

Table 13-3 Grease specifications

The E CYCLO is shipped after Nippeco’s HGO-3 No.00has been sealed.
Replace grease every 20,000 hours of operation time or every three to five years.

Grease nameBase oilThickener
Additive

Table 13-2
Frame size
Grease amount205 (Reduction ratio 50,80 / 100)

203

107

g

mL

g

mL

g

mL

7

8

14 / 1016 / 12

16

18

The specific gravity is assumed to be 0.87 g/mL.

HGO-3
Refined mineral oil
Lithium soap
Extreme pressure
additives, etc.
Consistency No.
No.00
Consistency (at 25°C) 400–430
Appearance
Light brown

17

∅4
8

°
18

22.5°

16×Ø3.4 THRU

Ø74 h7(Ø54 h7)* indicates Ø74h7.

36°

A (2.5:1)

16 PLACES

(M3)

(Ø62)

68

16×M3

Ø3.4

∅

4.7 5.5

A

(1.4)

*

5

*

10

.4

16.3

R0

10.1

(32.5)

52.5

7.7 18.5 4 20.9

10

Ø56 h7(10.2)

Ø24.9 h7

Ø19 H7(4.6)

Ø74 h7

Ø55.8

18

Ø54 h7(Ø48)(Ø35)

ECY-203 Outline Drawing∅2
2

6×M2 DEPTH430°

Mass 0.9kg

14. Outline Drawing

16×M355.5(Ø64 h7)

22.5°

A (2.5:1)

Ø3.4

16×∅3.4 THRU

16 PLACES

A

7.9 21.5

*

5
56

(24)
10.2

18

15.8

*
4 21.3

.4

(1.3)

14

R0

* indicates Ø84h7.

22.5°

∅78

(M3)

Ø62 h7

4.2 5.5

2.5

Ø27 h7(5.5)

Ø21 H7(9.7)

Ø84 h7(Ø71)
Ø64 h7∅(Ø55.5)(Ø40)

ECY-205 Outline Drawing

8×M2 DEPTH4

45°

∅2
4

19

Ø84 h7

Ø61.8

Mass 1.2kg

16×M4

∅

63

22.5°

* indicates Ø95h7.

22.5°(Ø72 h7)

A (2.5:1)

16×∅4.5 THRU

Ø4.5

.5

87

∅

7

16 PLACES

4.2

A

(1)

(28)

58

*
4.5
6.5 22.7

5*

12.5

(M4)

8.8

Ø69 h7(11.2)

Ø95 h7(Ø80)
Ø72 h7
(Ø63)
(Ø45)

23.3

16.7

5

2.5

17.5

ECY-107 Outline Drawing

Ø34.5 h7

Ø25.5 H7
(6.6)

Ø95 h7

Ø68.8

20
.4

R0

8×M3 DEPTH6

45°

∅30

Mass 1.6kg

15. Other
The specification shown in this document is based on our evaluation method. Evaluate the performance and durability in the conditionof installation in the drive considering the field usage conditions, etc. and confirm that there is no problem, by yourself, before using thisproduct.
Be sure not to perform disassembly, inspection, repair, and maintenance with disassembly in cases of abnormalities of this product by
yourself because they have to be performed by our skilled workers with special jigs and tools and expertise.
Note that the specifications and dimensions shown in this document may be changed without notice to customers.

Warranty standard
The scope of warranty of our delivered products is limited only to what we manufactured.
Warranty Period

The warranty period for the Products shall be 18 months after the commencement of delivery or 18 months
after the shipment of the Products from the seller's works or 12 months from the Products coming into
operation, whether comes first.

Warranty Condition

In the event that any problem or damage to the Product arises during the“Warranty Period”from defects in the
Product whenever the Product is properly installed and combined with the Buyer's equipment or machines,
maintained as specified in the maintenance manual, and properly operated under the conditions described in
the catalog or as otherwise agree upon in writing between the Seller and the Buyer or its customers; the Seller
will provide, at its sole discretion, appropriate repair or replacement of the Product without charge at adesignted facility, except as stipulated in the“Warranty Exclusions”as described below. However, if the Productis installed or integrated into the Buyer's equipment or machines, the Seller shall not reimburse the cost of :removal or re-installation of the Product or other incidental costs related thereto, any lost opportunity, any
profit loss or other incidental or consequential losses or damages incurred by the Buyer or its customers.

Warranty Exclusions

Notwithstanding the above warranty, the warranty as set forth herein shall not apply to any problem or
damage to the Product that is caused by :1.	installation, connection, combination or integration of the Product in or to the other equipment or machinethat is rendered by any person or entity other than the Seller ;2.	insufficient maintenance or improper operation by the Buyer or its customers, such that the Product is not
maintained in accordance with the maintenance manual provided or designated by the Seller ;3.	improper use or operation of the Product by the Buyer or its customers that is not informed to the Seller,
including, without limitation, the Buyer's or its customers, operation of the Product not in conformity withthe specifications, or use of lubricating oil in the Product that is not recommended by the Seller ;4.	any problem or damage on any equipment or machine to which the Product is installed, connected or
combined or on any specifications particular to the Buyer or its customers ;5.	any changes, modifications, improvements or alterations to the Product or those functions that are renderedon the Product by any person or entity other than the Seller ;6.	any parts in the Product that are supplied or designated by the Buyer or its customers ;7.	earthquake, fire, flood, sea-breeze, gas, thunder, acts of God or any other reasons beyond the control of theSeller ;8.	normal wear and tear, or deterioration of the Product's parts, such as bearings, oil-seals ;9.	any other troubles, problems or damage to the Product that are not attributable to the Seller.

Safety Precautions•	Observe the safety rules necessary for the installation location and device in use.
(Ordinance on Industrial Safety and Health, facility's electrical codes, interior wiring code, plant explosion proofing guide, BuildingStandards Act, etc.)•	Carefully read the maintenance manual before use. When you don’t have the maintenance manual, please make sure to contact thenearest agent, distributor, or sales office. Make sure that the maintenance manual is delivered to the customer who actually use theproduct.
•	This product is designed and produced for uses in general industries. Therefore, in the case the product is used for applications which
can seriously affect human bodies, human lives, and public facilities (nuclear, aerospace, public transportation, any application related
to medical treatment, etc.), consideration is required on all such occasions. Contact our sales office.
•	Select the product suitable for your operating environment and purpose.
•	If you use the product for any devices for which a breakdown of the product is expected to cause a great loss of human life or facility
such as systems for human transport, hoisting equipment, etc., install a protection device in the device side for safety.
•	When the unit is used in food processing applications, machines for cleanroom and so on, vulnerable to oil contamination, install an oil
pan or other such device to cope with oil leakage due to breakdown or failure;21

M E M O

22

M E M O

23

M E M O

24

Worldwide Locations
U.S.A
Sumitomo Machinery Corporation of America(SMA)
4200 Holland Blvd. Chesapeake, VA 23323, U.S.A.
TEL (1)757-485-3355 FAX (1)757-485-7490
CanadaSM Cyclo of Canada, Ltd. (SMC)
1453 Cornwall Road, Oakville, Canada ON L6J 7T5
TEL (1)905-469-1050 FAX (1)905-469-1055
MexicoSM Cyclo de Mexico, S.A. de C.V. (SMME)
Av. Desarrollo 541, Col. Finsa, Guadalupe,
Nuevo León, México, CP67132
TEL (52)81-8144-5130 FAX (52)81-8144-5130
BrazilSumitomo Industrias Pesadas do Brasil Ltda.
(SHIB)
Rodovia do Acucar (SP-075) Km 26
Itu, Sao Paulo, Brasil
TEL (55)11-4886-1000 FAX (55)11-4886-1000
Chile
SM-Cyclo de Chile Ltda. (SMCH)
Camino Lo Echevers 550, Bodegas 5 y 6,
Quilicura, Región Metropolitana, Chile
TEL (56)2-892-7000
FAX (56)2-892-7001
Argentina
SM-Cyclo de Argentina S.A. (SMAR)
Ing Delpini 2230, B1615KGB Grand Bourg,
Malvinas Argentinas, Buenos Aires, Argentina
TEL (54)3327-45-4095 FAX (54)3327-45-4099
GuatemalaSM Cyclo de Guatemala Ensambladora, Ltda.
(SMGT)
Parque Industrial Unisur, 0 Calle B 19-50 Zona 3,
Bodega D-1 Delta Bárcenas en Villa Nueva, Guatemala
TEL (502)6648-0500 FAX (502)6631-9171
Colombia
SM Cyclo Colombia, S.A.S. (SMCO)
Parque Industrial Celta, Km 7.0 Autopista Medellín,
Costado Occidental, Funza, Cundinamarca, Colombia
TEL (57)1-300-0673

Austria
Sumitomo (SHI) Cyclo Drive Germany GmbH(SCG)SCG Branch Austria Office
Gruentalerstraße 30A, 4020 Linz, Austria
TEL (43)732-330958 FAX (43)732-331978

Korea
Sumitomo (SHI) Cyclo Drive Korea, Ltd. (SCK)Royal Bldg Room #913, 19, Saemunan-ro 5-gil,
Jongno-gu, Seoul, 03173, Korea
TEL (82)2-730-0151
FAX (82)2-730-0156

Belgium
Hansen Industrial Transmissions NV (HIT)
Leonardo da Vincilaan 1, Edegem, Belgium
TEL (32)34-50-12-11 FAX (32)34-50-12-20

TaiwanTatung SM-Cyclo Co., Ltd. (TSC)
22 Chungshan N. Road 3rd., Sec. Taipei, Taiwan 104,
R.O.C.
TEL (886)2-2595-7275 FAX (886)2-2595-5594

FranceSM-Cyclo France SAS (SMFR)
8 Avenue Christian Doppler, 77700 Serris, France
TEL (33)164171717
FAX (33)164171718
Italy
SM-Cyclo Italy Srl (SMIT)
Via dell' Artigianato 23, 20010 Cornaredo (MI), Italy
TEL (39)293-481101 FAX (39)293-481103
Spain
SM-Cyclo Iberia, S.L.U. (SMIB)
C/Gran Vía Nº 63 Bis, Planta 1, Departamento 1B
48011 Bilbao–Vizcaya, SpainTEL (34)9448-05389 FAX (34)9448-01550
United Kingdom
SM-Cyclo UK Ltd. (SMUK)Unit 29, Bergen Way, Sutton Fields Industrial Estate,
Kingston upon Hull, HU7 0YQ, East Yorkshire,
United Kingdom
TEL (44)1482-790340 FAX (44)1482-790321
TurkeySM Cyclo Turkey Güç Aktarım Sis. Tic. Ltd. Sti.
(SMTR)
Barbaros Mh. Çiğdem Sk. Ağaoğlu, Office Mrk. No:1 Kat:4 D.18
Ataşehir, İstanbul, Turkey
TEL (90)216-250-6069 FAX (90)216-250-5556
India
Sumi-Cyclo Drive India Private Limited (SDI)
Gat No. 186, Raisoni Industrial Park, Alandi Markal Road,
Fulgaon-Pune, Maharashtra, India
TEL (91)96-0774-5353

Peru
SM Cyclo de Perú, S.A.C (SMPE)
Jr. Monte Rosa 255, Oficina 702, Lima,
Santiago de Surco, PerúTEL (51)1-713-0342
FAX (51)1-715-0223

China
Sumitomo (SHI) Cyclo Drive Shanghai, Ltd.
(SCS)
11F, SMEG Plaza, No. 1386 Hongqiao Road,
Changning District, Shanghai, China 200336
TEL (86)21-3462-7877 FAX (86)21-3462-7922

Germany
Sumitomo (SHI) Cyclo Drive Germany GmbH
(SCG)
Cyclostraße 92, 85229 Markt Indersdorf, Germany
TEL (49)8136-66-0
FAX (49)8136-5771

Hong Kong
SM-Cyclo of Hong Kong Co., Ltd. (SMHK)
Room 19, 28th Floor, Metropole Square, No.2 On
Yiu Street, Shatin, New Territories, Hong Kong
TEL (852)2460-1881 FAX (852)2460-1882

Singapore
Sumitomo (SHI) Cyclo Drive Asia Pacific Pte.
Ltd. (SCA)
15 Kwong Min Road, Singapore 628718
TEL (65)6591-7800
FAX (65)6863-4238
Philippines
Sumitomo (SHI) Cyclo Drive Asia Pacific Pte. Ltd.
Philippines Branch Office (SMPH)
C4 & C5 Buildings Granville Industrial Complex, Carmona,
Cavite 4116, Philippines
TEL (63)2-584-4921
FAX (63)2-584-4922
Vietnam
SM-Cyclo (Vietnam) Co., Ltd. (SMVN)
Factory 2B, Lot K1-2-5, Road No. 2-3-5A,
Le Minh Xuan Industrial Park, Binh Chanh Dist.,
HCMC, Vietnam
TEL (84)8-3766-3709 FAX (84)8-3766-3710
Malaysia
SM-Cyclo (Malaysia) Sdn. Bhd. (SMMA)
No.7C, Jalan Anggerik Mokara 31/56, Kota Kemuning,
Seksyen 31, 40460 Shah Alam, Selangor Darul Ehsan,
Malaysia
TEL (60)3-5121-0455 FAX (60)3-5121-0578
Indonesia
PT. SM-Cyclo Indonesia (SMID)
Jalan Sungkai Blok F 25 No. 09 K, Delta Silicon III,
Lippo Cikarang, Bekasi 17530, Indonesia
TEL (62)21-2961-2100 FAX (62)21-2961-2211
Thailand
SM-Cyclo (Thailand) Co., Ltd. (SMTH)
195 Empire Tower, Unit 2103-4, 21st Floor, South
Sathorn Road, Yannawa, Sathorn, Bangkok 10120,
ThailandTEL (66)2670-0998
FAX (66)2670-0999
Australia
Sumitomo (SHI) Hansen Australia Pty. Ltd.
(SHAU)
181 Power St, Glendenning, NSW 2761, Australia
TEL (61)2-9208-3000 FAX (61)2-9208-3050
Japan
Sumitomo Heavy Industries, Ltd. (SHI)
ThinkPark Tower, 1-1 Osaki 2-chome, Shinagawa-ku,
Tokyo 141-6025, JapanTEL (81)3-6737-2511 FAX (81)3-6866-5160

Specifications, dimensions, and other items are subject to change without prior notice.

Power Transmission & Controls Group
Headquarter ThinkPark Tower, 1-1 Osaki 2-chome, Shinagawa-ku, Tokyo 141-6025, Japan

No.F1001E-2.0
EA14 Printed 2022.05