DPI-1500-R0

TORSIFLEX®Couplings
For General Purpose & Process Applications
compliant with the requirements of
API 610/ISO 13709 and ISO 14691

Daido Precision Industries Ltd.

Contents

FEATURES����������������������������������������������������������������������������������������������� 3
CONSTRUCTION OF THE TORSIFLEX®COUPLING���������� 4
TYPES OF ELEMENTS������������������������������������������������������������������������� 4
PERFORMANCE�������������������������������������������������������������������������������4〜5
MISALIGNMENT�������������������������������������������������������������������������������������� 5
SELECTION PROCEDURE������������������������������������������������������������������� 6
COUPLING NOMENCLATURE����������������������������������������������������������� 6
RATINGS AND DIMENSIONS�������������������������������������������������������������� 7
BORE AND KEYWAY���������������������������������������������������������������������������� 8
SAFETY PRECAUTIONS������������������������������������������������������������� 9〜13
HUB OPTIONS/COUPLING DESIGN OPTIONS��������������������������13
APPLICATION DATA SHEET������������������������������������������������������������14

The TORSIFLEX® Coupling is made under License from
Ameridrives International LLC.

FEATURESThe TORSIFLEX® coupling is compliant with the requirements of API 610/ISO 13709 or ISO 14691.
The TORSIFLEX®coupling is of the dry disc type. As same as our FORM-FLEX®couplings, misalignment
between the shaft ends is absorbed by deformation of the elements.

The TORSIFLEX® coupling consists of two hubs and a factory assembled spacer

CONSTRUCTION

unit. Installation involves fitting the hubs to the machinery shaft ends, placing thespacer unit between them, then securing with the attachment screws. Plug-in
design allows installation and removal of spacer unit without disturbing the hubs.

Anti-Flail Feature retains the spacer in position should the disc packs fail.

SAFETYSPARK FREE overload protection is provided
as a standard feature on all the TORSIFLEX®
couplings, making them suitable for GAS
ZONE environments.

HIGHER TORQUE Large bolts for high clamping load, increased frictional torque load, and reduced
TRANSMISSION bolt bending stress.

SURFACE
TREATMENTSUPERIORRESISTANCE TO
DIFFICULTCONDITIONSZinc phosphate coating applied as standard.

The temperature range: from -20℃ to 149℃ .
Consult us if you intend to operate outside of the range.

Torque overload protection

OPTIONSLEF (Limited end float)
Electrical Insulation
Low temperature design for down to -50℃

3

CONSTRUCTION OF THE TORSIFLEX® COUPLING
HUB

SPACER UNIT

HUB

Scrap view
showing
packing plate& shims

Scrap view
showing
InstallationscrewsFigure 1 Coupling ConstructionNO.

COMPONENT PARTS

1

HUB

2

SPACER

3

ADAPTER

4

ELEMENT WASHER

5OVERLOAD WASHER

6ELEMENT

7

COUPLING BOLT

8

LOCK NUT

9ATTACHMENT SCREW10SHIPPING BOLT

11

SHIM

12

PACKING PLATE

Mainly, a coupling consists of components shown above. The spacer unit (No. 2 to 8）is factoryassembled. If required, the dynamic balance can be carried out. If assembly balance or assembly checkbalance is carried out, the coupling has match marks. The main coupling bolts (No. 7) and nuts (No. 8)
are factory-tightened, and should, under normal circumstances, NOT BE TOUCHED unless specified in the
installation instructions(11 and 12 are optional).

TYPES OF ELEMENTSPERFORMANCEMAX ANGULAR MISALIGNMENT： 0.5°
TORQUE RATING: 270-13100Nm

MAX ANGULAR MISALIGNMENT： 0.33°
TORQUE RATING: 19000-120000Nm

SIZE 27-1310 (6-BOLT TYPE)SIZE 1900-12000 (8-BOLT TYPE)SHAPEPERFORMANCE
Allowance for axial and parallel misalignment of coupling depends on the number of bolts used in theelement and operation speed. Allowance for axial and parallel misalignment is in inverse relationship; inother words, when one increase, the other decreases. Therefore, they should be taken into consideration
concurrently. There are many possible causes for misalignment of shaft. Initial alignment may be alteredby temperature change, bearing wear, deformation of substructure, etc. In general, however, careful
initial alignment of shafts increases coupling life. If it is insufficient, a coupling will have little reserve forabsorption of misalignment. This may result in reduced coupling service life.
Parallel misalignment happens when two shafts are parallel and do not intersect. They are offset bysome distance. Angular misalignment is caused by either connected shaft. They are not parallel and4intersect at an angle. Axial misalignment is caused by changes in the axial position of the shafts. It canbe the situation either smaller or larger distance than one at installation between shafts. In many cases,
misalignment is the result of a complex combination of these types.
The TORSIFLEX® coupling can satisfy NEMA Standards MG1-2003 and JEM Standards 1146-1959
without the use of any accessories which restrict axial movement. (The TORSIFLEX®coupling does not
require any accessories to correct movement in the thrust direction when the motor starts.)

RadialAxial

RadialAngle

Angle1

Angle2MISALIGNMENTThe TORSIFLEX® coupling should operate within the envelope in“Allowable Misalignment for Disc
Couplings”graph below. Note that the values shown in the table below are MAXIMUM. Reduction inthese values will reduce bearing loads and increase machinery life.
With regard to the recommended value at alignment of installation, refer to the Table 1 and Table 2 on
page 10.

Bending
Moment(Nm/deg.)

Point A1)2)

4)

Max. Axial
Deflection(Zero Angular
Misalignment)(mm)

Max. Axial
Thrust(N)

Point C 3)

Per Element

Max. Axial
Deflection atfull Angular
Misalignment(mm)

Allowable Misalignments for Disc Couplings

Axial Thrust(N)

Point B 4)

Per Assembly

TF0027

0.5

31

1.7

560

0.5

65

TF0038

0.5

27

2.2

500

0.5

40

TF0140

0.5

27

2.7

1278

0.5

90

TF0260

0.5

40

3.3

2410

0.6

125

TF0400

0.5

89

4.3

4080

1.4

500

TF0750

0.5

146

5.0

6140

1.8

900

TF1310

0.5

222

6.0

8770

2.2

1300

TF1900

0.33

375

5.0

11000

1.5

1500

TF2500

0.33

500

5.4

12900

1.7

1500

TF3300

0.33

590

6.0

15650

1.8

1800

TF6000

0.33

955

7.5

23000

2.4

2700

TF8500

0.33

1390

8.1

33500

2.8

5000

TF12000

0.33

1710

9.0

38200

3.0

5000

Combined Angular/Parallel Misaligument

Size

Max. Angular
Misalignment(Deg.)

Axial Deflection（±）1）. Combined angular/radial misalignment2）. 1°angle is equivalent to 0.017 mm/mm
3）. At zero speed (Static)
4）. At max speed & continuous rated torque

NOTE : If limited end float (LEF) feature were incorporated, the amount of axial movement is
physically restricted. Therefore, the values shown in the above table do not apply.

5SELECTION PROCEDURE
１ Select an appropriate service factor“SF”
２ Calculate rated torque (Tn) and design torque (Ts)Tn=

9550×Power
（kW）
Speed
（min-1）(Nm)

Ts=Tn×SF (Nm)３ Select a coupling size equal to or greater than the design torque
４ Check that drive and driven shaft diameters are within the MAX. BORE(Emax)
５ Check Speed is less than the MAX. SPEED
６ Specify required dynamic balance
７ Specify the distance between shaft ends (DBSE) and check that is not less than the MINIMUM DBSE
Example:90kW across the line electric motor driving a centrifugal pump at 3,000 min-1
Driver side shaft diameter φ55mm, Driven side shaft diameter φ50mm, DBSE=140mm
Selected SF=1.5
Tn=

9550×903000＝287(Nm)

Service Factor（SF）
DriverDriven Equipment

Turbine,Soft start motor

Ts=287×1.5=430 (Nm)
TF0140 is selected.
Emax=73mm＞55and50.............
Minimum DBSE=100＜140........

Across the LineStart Motor

Steady Torque
Fluctuating Torque
Pump, Rotray compressor(frequent starts)
Reciprocating compressor
1-3 cylinders
Reciprocating compressor
4-6 cylinders
Reciprocating compressor
over 6 cylinders
Centrifugal fan for forced
draught
Cooling Tower

Service Factor
（SF）
1.2
1.5
（2）
3
2
1.5
1.5
2

COUPLING NOMENCLATURE
TF

0750－80K/60T－254 －B（671, 1U, El）－ W/SS, MS
Accessories
SS:Shim, MS:Moment simulator
Option671: API671 compliant
1U: A hub one size larger than normally selected
1U1U: Both hubs one size larger than normally selected
2U: A hub two size larger than normally selected
EI: Electrically insulated
Dynamic balance
B: Only spacer unit balance
B1: Component balance (API671 Method 1)
B2: Component balance with assembly check balance (API671 Method2)
B3: Component balance with assembly balance (API671 Method3)
Distance between shaft ends (DBSE)
Hub bore specification
Numbers denote bore diameter (mm) R: Cylindrical bore diameter (mm)
T: Tapered bore diameter (mm) Z: Rough bore K : Cylindrical bore with keyway
TK: Tapered bore with keyway
Coupling size
The TORSIFLEX®coupling

6

RATINGS AND DIMENSIONS

SIZE

kW/min-1

TF0027
TF0038
TF0140
TF0260
TF0400
TF0750
TF1310
TF1900
TF2500
TF3300
TF6000
TF8500
TF12000

0.028
0.040
0.147
0.272
0.419
0.785
1.37
1.99
2.62
3.46
6.28
8.90
12.6

TORQUERATING
Nm
270
380
1,400
2,600
4,000
7,500
13,10019,00025,00033,00060,00085,000120,000

MAX.
SPEED
min-1
20,00016,50012,00010,000
8,500
7,500
6,500
5,600
5,200
4,900
4,000
3,600
3,000

A
mm

C
mm

D
mm

85
107
127
154
176
203
241
279
296
326
395
443
493

40
45
75
85
105
120
145
150
164
182
230
262
292

60
76
101
121
144
166
199
233
240
270
322
365
410

EXTRA
MINIMUM TORSIONALPER100mm
DBSE
STIFFNESSmm
Nm/rad（*2） Nm/rad（*3）
1.0x10570
2.9x103370
2.6x102.9x1053100
1.6x107.0x1053120
1.4x101.5x1064140
4.3x103.0x1064170
3.8x106.8x106200
4.6x105
9.9x106
5200
4.7x101.7x1075220
4.3x102.5x1075240
4.0x103.4x1076260
4.3x10
7.4X107320
4.0x106
1.2x1086340
3.8x101.9x108

HUB

SPACER

SIZE

MAX. BORE
Emax（mm）

ROUGH
BORE
mm

MASS
kg（*1）MOMENT OF
INERTIAkgm2（*1）

MASS
kg（*2）EXTRA
PER 100mm
kg（*3）MOMENT OF
INERTIAkgm2（*2）

EXTRA
PER 100mm
kgm2（*3）

TF0027
TF0038
TF0140
TF0260
TF0400
TF0750
TF1310
TF1900
TF2500
TF3300
TF6000
TF8500
TF12000

43(26)
55(43)
73(67)
88
105
120
145
170
175
190
230
260
290

10
10
10
10
25
25
50
50
50
50
100
100
100

1.0
1.8
4.8
7.9
13
20
34
49
58
81
137
205
293

5.5x10-4
1.6x10-3
6.6x10-3
1.6x10-2
3.7x10-2
7.5x10-2
0.19
0.37
0.46
0.80
2.0
3.8
6.8

1.3
1.9
4.3
7.7
12
20
35
46
57
78
121
189
247

0.31
0.44
0.69
1.0
1.4
2.3
2.7
3.3
4.0
4.9
7.3
9.6
12

1.1x10-3
2.7X10-3
8.9x10-3
2.3x10-2
5.1x10-2
0.11
0.27
0.48
0.69
1.1
2.5
4.9
8.0

9.7x10-5
2.8x10-4
6.8x10-4
1.5x10-3
2.9x10-3
6.5x10-3
9.6x10-3
1.6x10-2
2.4x10-2
3.3x10-2
7.2x10-2
0.11
0.18

1 MAX SPEEDS shown are for standard materials. Consult us for higher speed.
2 Acceptable peak torque can be calculated by multiplying the TORQUE RATING 1.75 times. Likewise, acceptable momentary torque can be doneby multiplying the TORQUE RATING 2.7 times.
(*1) MASS and MOMINT OF INERTIA of rough bore(*2) MASS, MOMENT OF INERTIA of spacer unit and TORSIONAL STIFFNESS of a coupling set at minimum DBSE(*3) Additional MASS, MOMENT OF INERTIA and TORSIONAL STIFFNESS for every extra 100 mm of DBSE
Example: Size TF0140 with min. DBSE + 50 mm extra
MASS ＝ 4.8 × 2 ＋ 4.3 ＋ 0.69 × 50/100 ＝ 14.2（kg）
MOMENT OF INERTIA ＝ 6.6 × 10-3 × 2 + 8.9 × 10-3 ＋ 6.8 × 10-4 × 50/100 ＝ 0.0224（kgm2）
1
TORSINAL STIFFNESS ＝＝ 1.6 × 103（Nm/rad）
1
1
＋
100
1.6 × 103
7.0 × 105 ×
50
NOTE: Dimensions of MAX. BORE of API610 compliant TF0027, TF0038 AND TF0140 are shown in brackets‘()’. Coupling hubs designed forinterference fit to the shaft shall be furnished with tapped puller holes at least 10 mm (0.38 in) in diameter to aid removal.

7

BORE AND KEYWAY
DIMENSIONS OF BORE, KEY AND KEYWAY
Keys and their corresponding keyways are compliant with JIS B 1301-1996
Dimensions of keyway
Nominal bore
diameters, d.
（mm）

8Nominal sizeof key,b×h（mm）

KeywayWidth,b2(mm)

Width tolerance(mm)

Keyway fillet
radius, r2
Commercial class（mm）
Tolerance, b2（Js9）
0.08〜0.16

Keyway
Depth
（t2）
（mm）

10〜12

4×4

4

12〜17

5×5

5

17〜22

6×6

6

22〜30

8×7

8

30〜38

10×8

10

38〜44

12×8

12

44〜50

14×9

14

50〜58

16×10

16

58〜65

18×11

18

4.4

65〜75

20×12

20

4.9

75〜85

22×14

22

85〜95

25×14

25

95〜110

28×16

28

6.4

110〜130

32×18

32

7.4

130〜150

36×20

36

8.4

150〜17040×2240

170〜200

45×25

45200〜230

50×28

50

11.4

230〜260

56×32

56

12.4

260〜29063×32

63

290〜33070×36

70

330〜38080×40

80

380〜44090×45

90

440〜500

100×50100±0.01501.8
2.3

0.16〜0.25

2.8

KeywayDepthTolerance,
t2
（mm）
＋0.1
0

3.3

±0.0180

3.3
3.3±0.0215±0.0260±0.0310±0.0370

0.25〜0.40

3.8
4.3

5.4
0.40〜0.60

0.70〜0.10

1.20〜1.60

5.4

9.4
10.4

12.4
14.4
15.4

±0.0435＋0.2
02.00〜2.50

17.4
19.5

＋0.3
0

SAFETY PRECAUTIONS
1). Please be sure to read and fully understand the instruction manual before use.
2). If the danger is predicted due to the operation of coupling, take prevention measures to avoid the risk
beforehand.

PRODUCT IDENTIFICATION / MARKING・ Each coupling is marked with the unique serial number.
	(For products in accordance with API671 or on demand)
Example: JK90254311 - 1 - M

optional marking
on demand

Correctly aligned match markings shown

unit number(omitted if single unit.)
serial number
・ Couplings with assembly balance or assembly check balance have match marking.

LIMITATIONS OF PRODUCT USE

Each coupling must be selected in accordance with the recommended selection procedure and must only
be used within the performance criteria below.
・ The rated torque capacities: refer to this brochure and/or product arrangement drawing.
・ Allowable misalignments: refer to this brochure and/or product arrangement drawing.
・ The temperature range: -20℃ to 149℃

MAINTENANCE INSTRUCTIONSCheck the following items for general maintenance during routine machinery maintenance.
･	Axial, angular and parallel misalignments remain within the acceptable limits and shall not change
noticeably.
･ All fasteners are securely tightened.
･	Inspect the flexible elements visually for signs of fatigue cracking local to the washer anchoring points or
fretting corrosion.
・	Note that any crackings will begin at the outermost edge of the top or bottom of laminated blades.
	The element packs should be replaced at the earliest opportunity should cracking / damage be
detected.
・Slight bowing or S-shape like distortion is not detrimental to the operation of the unit.
Note:	Any requirements for spare parts should be made quoting the original purchasers order number andthe coupling serial number.
	They will be etched on the major coupling flanges and be shown on all documentation (for API671
compliant couplings or on demand).
Correct, careful assembly and alignment at the initial stage enable couplings to provide maximum
performance of rotation transfer, long life and trouble-free operation.
The TORSIFLEX® coupling is designed to transmit the torque in friction between the driving and driven
bolts and the flexible elements. Therefore it is essential that, should the need arise, these bolts should besecurely tightened with torque indicated on the assembly drawing or in the“Installation and MaintenanceInstructions”
in this catalogue.
Torque and speed should remain within the originally specified conditions.

ALIGNMENT INSTRUCTIONS

Although the TORSIFLEX®coupling can accept substantial amounts of misalignment, the actual acceptablelevel depends on how each coupling is mounted/aligned.
The amount of allowable misalignment is shown in the diagram on page 5.
The curve shows the maximum allowable level of misalignment for operation and is NOT intended todefine set up value.

9

AXIAL ALIGNMENT

Distance between the machinery shaft ends(DBSE) tolerance values at setting up are as shown in Table 1.

Table 1SIZE

No. of bolts

Tolerance on DBSE

TF1900 ～ TF12000

8±0.25 mm

TF0027 ～ TF1310

6±0.30 mmPARALLEL / RADIAL / ANGULAR ALIGNMENT

Having basically aligned the machinery shafts, the coupling may be installed as instructed. It is then worth
performing a check the overall alignment. This may be simply performed by one of the following methods:
Method 1.
Attach a dial indicator securely to one of the hubs with the needle in contact with the surface of spacer
flange. The needle shall be positioned as close as the edge. Rotate the shaft of machinery with thecoupling more than one roll and find the smallest reading position. At this position, set the dial reading
to zero. Rotate the shaft more than one roll again and find the largest reading position. Divide this largest
value by the coupling flange diameter to gain a value in mm/mm, which should be no greater than thatshown in the Table 2. This should be carried out to the other end as well.
Method 2.
An alternative method is to accurately measure the gap between the flanges where the flexible element
is sandwiched(element gap G1, G2) to obtain the largest and the smallest value. The gap between thesetwo values should be divided by the flange outside diameter to obtain a value in mm/mm, which should
be no greater than that shown in the Table 2. This should be carried out to the other flexible element as
well.

Method 1

Method 2

Table 2SIZE

No. of bolts

Tolerance Element Gap

TF1900～TF12000

8±0.002 mm/mm

TF0027～TF1310

6±0.003 mm/mm

INSTALLATION AND OPERATING MISALIGNMENT LIMITS

Check that the parallel and axial misalignments of the shafts are within the limits defined in the alignment
curves on page 5 (Allowable Misalignments for Disc Couplings).
For assembly balanced and assembly check balanced couplings, two match markings must be aligned
when the coupling is installed.
IMPORTANT: The main coupling bolts/nuts at both ends are factory-tightened, and should, under normal
circumstances, NOT BE TOUCHED unless specified in the installation instructions.
When tightening any other bolts or screws, this should be done evenly, i.e. cylinder head fashion, to 50%
torque then to 100% torque in the same sequence. Threads should be lubricated with molybdenum
disulphide grease or equivalent. See Table 4 on page 13 for tightening torques.
The hubs must be removed from the spacer unit when installing. See Figure 1. Remove the attachment
10screws from the hub/adaptor and force the flanges apart by using jacking screws. Alternatively, you may
knock the edge of hub to slide out from the spacer unit.
Store the bolts and nuts along with the packing plate and shims (option) for later stages of installation.
The hubs can now be fitted to the driver and driven shafts. The method of fitting depends on the typeof fit specified in the each product drawing. In any cases, follow the instructions in the product drawing.
Where hub/shaft connections require a standard interference fit, the hubs may be heated in an oil bath oroven at 90-120 °C. It is essential that the whole hub is heated up uniformly.
Couplings with assembly balanced or assembly check balanced have match marks. Ensure that they arealigned before the spacer unit is installed.
Check shaft misalignments and distance between shaft ends (DBSE) are within allowable limits.

HUB

SPACER UNIT

HUB

Scrap view
showing
packing plate& shims

Scrap view
showing
InstallationscrewsFigure 1 Coupling ConstructionNO.

COMPONENT PARTS

1

HUB

2

SPACER

3

ADAPTER

4

ELEMENT WASHER

5OVERLOAD WASHER

6ELEMENT

7

COUPLING BOLT

8

LOCK NUT

9ATTACHMENT SCREW10SHIPPING BOLT

11

SHIM

12

PACKING PLATE

Coupling bolts in the spacer unit are factory-assembled and must not be disturbed. Shipping bolts areused for the protection of element during transportation and for installation or removal.
[If no packing plate or shims are supplied, skip to (*) below.]
Measure the free length of the spacer unit. Add this to the thickness of the packing plate. Record thisvalue as X.
Now measure the distance between the shaft ends (DBSE) of the machinery. Adjust this length by either
subtracting pre-stretch or adding pre-compression. Record this value as Y.
Calculate the required number of shims from the following equation:
Number of shims = (Y - X) ÷ shim thickness
Round this value to get the number of shims required. The thickness of a shim is 0.4mm.
Fit shims between packing plate and spacer unit.
Ensure match marks are aligned.
(*)
Insert the shipping bolts (No. 10) and tighten them in cylinder head fashion, maintaining parallelism
between the flange faces of adaptor and spacer until both elements packs are compressed to minimum
required amount to allow the spacer unit to be put into position.
Do not compress the elements beyond the value stated in "Maximum Compression" as shown in Table 3.
It is recommended to use the minimum amount of compression when installing couplings.
The flange of spacer has the drilled holes (Fig. A) to install the shipping bolts and the tapped holes (Fig. B)
for production.
Insert the shipping bolts to the holes shown in Fig. A. When element is compressed by shipping bolts,
11

it may be deformed slightly. However,that should be no problem as long as
the amount of compression is within theacceptable range.

Drilledhole

TappedholeFig. A

TappedholeFig. B

Table 3
Coupling size
27
38
140
260
400
750
1310
1900
2500
3300
6000
8500
12000

Maximum Compression(mm) per element pack
1.5
1.75
2.0
2.3
2.3
2.5
3.0
3.0
3.0
3.0
3.5
3.5
4.0

Insert the spacer unit between the shaft ends (hub faces), ensuring match marks are aligned. Align the
hubs’bolt holes to meet spacer unit’s tapped holes. Then loosen shipping bolts while checking thespacer unit is fitted the hubs correctly. Insert and loosely tighten all attachment screws. Then release
and remove the shipping bolts. Tighten the attachment screws in cylinder head fashion. See Table 4 fortightening torques. If a pre-stretch is present, pull the adapter together using the attachment screws.
Ensure all match marks have been aligned and all tools have been removed. Inspect the coupling before
operation. Operating with shipping bolts may damage the coupling.

REMOVAL INSTRUCTIONS

Do a reverse of the above installation process. Upon reinstallation, the installation process shall be
repeated.
Table 4 : When tightening bolts or screws, this should be done evenly, i.e. cylinder head fashion, to 50%
torque then to 100% torque in the same sequence. Threads should be lubricated with molybdenum
disulphide grease or equivalent.
IMPORTANT: The main coupling bolts/nuts at both ends are factory-tightened, and should, under normal
circumstances, NOT BE TOUCHED unless specified in the installation instructions.

12

Table 4
Coupling size TF
27
38
140
260
400
750
1310
1900
2500
3300
6000
8500
12000

Coupling Bolt (Nm)
9
9
45
75
113
225
370
370
480
750
1100
1900
2500

Attachment Screw (Nm)
10
24
10
24
24
44
72
72
180
180
350
475
633

(Note) 	For 1U (one size larger than usual) and 2U (two size larger than usual) hubs, the attachment screws shall be one or two size
larger respectively.

HUB OPTIONSTAPERED BORE FOR HYDRAULIC REMOVALUSED WITH KEYLESS TAPERED SHAFT

SPECIAL FLANGE ADAPTERDESIGNED TO MATE WITH CUSTOM FLANGEDESIGN OPTIONSBETWEEN FLANGE TO FLANGE MOUNTINGCAN BE DESIGNED TO FIT CUSTOMER‘S SPECIFIC PILOT AND BOLTING POSITIONS SUCHAS TEST STANDS.

13

APPLICATION DATA SHEET_________________________________________________________________________________________________________________

Project Ref : ____________________________________________________
Company :_____________________________________________ 
Date : ______________________________
Contact :__________________________________________________________________________________
Phone # : ______________________________ Email :______________________________________________SECTION I - DRIVER Electric Motor [ ] ; Engine [ ] - # of Cylinders _______ ;Other _________________

Turbine [ ] ;Ps : ___________________ kW : ____________________ Normal Torque: ______________________ N･m
Rated Speed: _____________________________________ Max Torque: ____________________ N･m

Operating Speed : ________________________________ Breakdown Torque: _________________ N･m
SECTION II - DRIVEN Description : ________________________________________________________________________________________________________________________________________________________________
Load Application: Non-Pulsating [ ] Medium Pulsating [ ] Heavy Pulsating [ ] Smooth [ ]Light Shock [ ] Heavy Shock [ ]SECTION III – COUPLING APPLICATIONMin Service Factor : __________________

Temperature Range: ____________ to ____________ °C Hydraulic Removal: Yes [ ] No [ ]Specification: API671 [ ] Edition ________ ; API610 [ ] Edition _______ ; Other _______________
Balance: Coupling [ ] Hubs [ ] Spacer [ ] Balance Specification __________________________SECTION IV - DIMENSIONAL DATA
Taper Shaft & Keyway Data

Distance Between Shaft Ends (DBSE): _______________ mm
DriverDrivenShaft Dia (Straight):__________________________________________________________________

Taper Ratio:__________________________________________________________________

Shaft Dia L.E. (Taper):Keyway Size:_________________________________

Width _________ Depth _________KW Depth Across Bore: _________________________________TAPER SHAFT DATA
Lock nut_________________________________
Width ________ Depth __________________________________________FLYWHEEL/FLANGE CONNECTION
LE _________

Pilot dia. ________

SE _________

B.C.D. ________

L _________

Hole dia. ________

T _________

No. of holes ________

M _________
N _________PILOT DIA

P _________

Bolt hole

14

MEMO

15

GUARANTEEThis brochure was prepared for the purpose of providing you with performance and size data for the
TORSIFLEX®coupling in order to select the most appropriate type. We accept requests for consultation
regarding application of selected types shown in this brochure, as well as special designs and uses.
But it is impossible for us to test our couplings with each piece of equipment under actual operating
conditions.
Therefore, we are unable to guarantee the performance of our couplings in practical operation. We
do, however, guarantee that our products have been manufactured and shipped under proper quality
control. We guarantee our products against defects in craftsmanship and materials for one year after
shipping. If such defect should appear, please return the whole or part of product for inspection todetermine whether the guarantee is applicable. If we find that the part is defective, our responsibility
will be limited to repairing or replacing the part in question. Defects arising from modification without
our prior consent, usage of item not supplied by us, repair by other than us, improper handling, or
accidents are excluded from this guarantee. Production of items shown in this brochure may bediscontinued. The contents of this brochure may be changed without notice.

Daido Precision Industries Ltd.
HEAD OFFICE
Nishi Ikebukuro TS Building, 3rd Floor
3-1-15 Nishi Ikebukuro,
Toshima-ku, Tokyo 171-0021, Japan
Tel: +81 3 5956 9176 Fax: +81 3 5956 9177
Email: sales@daidoseimitu.co.jp
www.daidoseimitu.co.jp
2017.4.500（USS）

Printed in JAPAN