Micron TRUE Planetary® Gearheads
UltraTRUE™

Helical True Planetary Gearheads

Ready for Immediate Delivery
Precision

4 arc-minutes

Frame Sizes

60 mm, 75 mm, 90 mm, 100 mm, 115 mm, 140 mm, 180 mm and 220 mm

Torque Capacity

up to 3300 Nm

Ratio Availability

4:1 thru 100:1

Radial load capacity

up to 37910 N

Mounting System

RediMount™

1

Tapered roller bearings
provide high axial and radial load
carrying capacity

2

Helical crowned
HRC 55-60 steel gears
provide higher torque capacity
and smoother operation

3

Sealed deep groove ball bearing
provides high radial load carrying
capability

4

RediMount systemprovides error-free motor
installation

5

Single-piece output
integrated output housing and internal gear

6

Anodized aluminum housing
reduces weight and prevents corrosion

1
4
1
4

3

2
5

6

MicronTrue Planetary
Planetary®™Gearheads
Gearheads
Micron True
shipped within
within 24
24 hours!
hours!

Gearhead Express™
Need it fast? Go to the back coverof the catalog for details.

82

www.bostongear.com

P-8741-BG

10/19

Micron TRUE Planetary® Gearheads
UltraTRUE™ Size 60

Helical True Planetary Gearheads
AD*

Metricø 60 g6(2.3618/2.3611)

48(1.89)

L

M5 THREAD X
19 (.75) DEEP

1
(.04)

M.S.

7
(.28)

5 h9
(.1969/.1957)18(.709)

ø 16 k6(.6304/.6300)

25
(.98)
ø 5.6 (.22) THRU HOLES
4 PL. EQUALLY SPACED ON A ø 68
(2.68) BOLT CIRCLE

1
(.04)
7
(.28)

Ratio161 SQ.
(2.40)

18(.71)

Dimension
Backlash Weight Efficiency‘L’[arc-min]kg [lb.]mm [in.]

4:1 to 10:1
57 [2.25]
16:1 to 100:1 105,4 [4.15]

4 max
5 max

2 [4.4]
2.5 [5.5]95%
90%

All dimensions are: mm (in.)
AD** = Adapter length
Adapter length will vary depending on motor.
M.S.= Mounting Surface
Efficiency is calculated at 100% of the rated torque.

Performance Specifications
Part
Number

10,000 Hour Life
Tr
Tr
Tr
Ratio1(3000(1000 rpm)
(5000 rpm)
rpm)
Nm [in.-lb.]
Nm [in.-lb.]

20,000 Hour LifeT peakNm [in.-lb.]

Nm [in.-lb.]

UT006-004
UT006-005
UT006-007
UT006-010
UT006-016
UT006-020
UT006-025
UT006-028
UT006-035
UT006-040
UT006-050
UT006-070
UT006-100

4:1
5:1
7:1
10:1
16:1
20:1
25:1
28:1
35:1
40:1
50:1
70:1
100:1

48 [426]
47 [413]45 [394]
26 [232]
53 [467]
53 [472]
51 [456]
54 [481]
52 [463]
55 [489]
53 [471]
50 [445]
35 [307]44 [387]
43 [377]
41 [362]
23 [200]
49 [435]
50 [442]48 [428]
51 [452]
49 [437]
52 [462]
50 [446]
48 [423]30 [269]

38 [340] 101 [891]
40 [355]
98 [865]
39 [345]
93 [825]
21 [186]
88 [781]
47 [419] 110 [975]
48 [426] 111 [985]
47 [413] 107 [948]
49 [437] 113 [999]
48 [423] 108 [960]
51 [447] 114 [1011]
49 [433] 110 [971]
46 [411] 103 [913]
29 [253]
96 [851]

Tr
Tr
Tr(1000 rpm) (3000 rpm) (5000 rpm)
Nm [in.-lb.]

Nm [in.-lb.]

Nm [in.-lb.]

47 [417]46 [404]
44 [385]
24 [215]52 [456]
52 [462]
50 [446]
53 [470]
51 [453]
54 [478]
52 [461]
49 [435]
32 [284]

36 [322]38 [336]
40 [354]
21 [185]
48 [426]
49 [432]
47 [418]50 [442]48 [427]
51 [451]
49 [436]
47 [414]28 [249]

31 [276]
33 [288]
35 [307]
19 [173]
46 [410]47 [417]46 [404]
48 [427]
47 [414]49 [438]
48 [423]45 [402]26 [234]J

kg-cm[in.-lb.-sec2x10-4]
2.20 [1.80].13 [1.16].11 [.96].10 [.85].16 [1.44].16 [1.44].16 [1.44].16 [1.44].10 [.85].10 [.85].10 [.85].10 [.85].10 [.85]

Torsional
Stiffness

Nm/arc-min[in.-lb./arc-min]2.62 [23.2]
2.56 [22.7]
2.42 [21.5]
1.93 [17.1]
2.67 [23.7]
2.62 [23.2]
2.58 [22.8]
2.46 [21.8]
2.54 [22.5]
2.67 [23.7]
2.62 [23.2]
2.46 [21.8]
2.03 [17.9]

All ratios are available to ship in 24 hours through the Gearhead Express Program.
1 Ratios are exact, higher ratios are also available, consult factory.

Tr = Rated output torque at rated speed for specific hours of life.

P-8741-BG

10/19

Tpeak = Allowable momentary peak torque for emergency stop or heavy shock loading.
J = Mass moment of inertia reflected to the input shaft (including pinion assembly).

www.bostongear.com

83Micron TRUE Planetary® Gearheads
UltraTRUE™ Size 75

Helical True Planetary Gearheads
AD*

Metricø 70 g6(2.7555/2.7547)

56(2.20)

L

M.S.

8
(.32)

6 h9
(.2362/.2350)

M8 THREAD X
19 (.75) DEEP

1.5
(.06)

24.5
(.965)

ø 22 k6(.8667/.8662)

32(1.26)
ø 7 (.28) THRU HOLES
4 PL. EQUALLY SPACED ON A
ø 85 (3.35) BOLT CIRCLE

1
(.04)
6.9
(.27)

Ratio175 SQ.
(2.95)

20(.78)

Dimension
Backlash Weight Efficiency‘L’[arc-min]kg [lb.]mm [in.]

4:1 to 10:1
16:1 to 100:1

60 [2.35]
117 [4.60]

4 max
5 max

2.5 [5.5]
3.0 [6.6]

95%
90%

All dimensions are: mm (in.)
AD** = Adapter length
Adapter length will vary depending on motor.
M.S.= Mounting Surface
Efficiency is calculated at 100% of the rated torque.

Performance Specifications
Part
Number

10,000 Hour Life
Tr
Tr
Tr
Ratio1(3000(1000 rpm)
(5000 rpm)
rpm)
Nm [in.-lb.]
Nm [in.-lb.]

20,000 Hour LifeT peakNm [in.-lb.]

Nm [in.-lb.]

UT075-004
UT075-005
UT075-007
UT075-010
UT075-016
UT075-020
UT075-025
UT075-028
UT075-035
UT075-040
UT075-050
UT075-070
UT075-100

4:1
5:1
7:1
10:1
16:1
20:1
25:1
28:1
35:1
40:1
50:1
70:1
100:1

86 [762]
84 [740]80 [706]
47 [418]
95 [838]
96 [849]
93 [820]
98 [864]
94 [834]
99 [880]
96 [849]
91 [802]63 [554]78 [689]
76 [672]
73 [646]
41 [360]
88 [780]
90 [792]
87 [767]
92 [811]89 [784]
94 [829]
91 [801]86 [760]
55 [486]

73 [649]
72 [636]
69 [615]38 [335]
85 [749]
86 [762]
84 [740]
88 [782]
86 [758]
91 [802]
88 [777]
83 [738]
52 [456]

179 [1581]
174 [1537]
166 [1469]
157 [1393]
197 [1743]
199 [1762]
192 [1698]
202 [1789]
194 [1721]
205 [1813]
197 [1743]
185 [1639]
173 [1529]

Tr
Tr
Tr
(1000 rpm) (3000 rpm) (5000 rpm)
Nm [in.-lb.]

Nm [in.-lb.]

Nm [in.-lb.]

84 [746]
82 [723]78 [690]
44 [387]
93 [820]
94 [830]
91 [801]
96 [845]
92 [815]
97 [861]
94 [830]
89 [784]
58 [513]74 [652]
74 [657]
71 [632]
38 [333]
86 [762]
88 [775]
85 [750]
90 [793]
87 [767]
92 [811]89 [784]
84 [743]
51 [450]

63 [559]
66 [583]
68 [601]35 [310]83 [732]
84 [746]
82 [723]
86 [765]
84 [741]89 [785]
86 [759]
82 [722]48 [422]J

kg-cm[in.-lb.-sec2x10-4]
2,46 [ 4.1]
,38 [ 3.4]
,31 [ 2.8]
,27 [ 2.4]
,31 [ 2.8]
,31 [ 2.8]
,31 [ 2.8]
,28 [ 2.5]
,16 [ 1.4]
,16 [ 1.4]
,16 [ 1.4]
,16 [ 1.4]
,15 [ 1.3]

Torsional
Stiffness

Nm/arc-min[in.-lb./arc-min]

7,00 [61.9]
6,86 [60.7]
6,07 [53.7]
4,46 [39.5]
7,36 [65.1]
7,20 [63.7]
7,07 [62.6]
6,45 [57.1]
6,68 [59.1]
7,37 [65.2]
7,22 [63.9]
6,48 [57.3]
4,50 [39.8]

All ratios are available to ship in 24 hours through the Gearhead Express Program.
1 Ratios are exact, higher ratios are also available, consult factory.

Tr = Rated output torque at rated speed for specific hours of life.

84

www.bostongear.com

Tpeak = Allowable momentary peak torque for emergency stop or heavy shock loading.
J = Mass moment of inertia reflected to the input shaft (including pinion assembly).

P-8741-BG

10/19

Micron TRUE Planetary® Gearheads
UltraTRUE Size 90

Helical True Planetary Gearheads

Metric9.9[.39]

Ratio1

Dimension
Backlash Weight Efficiency‘L’[arc-min]kg [lb.]mm [in.]

4:1 to 10:1
16:1 to 100:1

68 [2.66]
125 [4.91]

4 max
5 max

2,5 [5.5]
3,0 [6.6]

95%
90%

All dimensions are: mm (in.)
AD** = Adapter length
Adapter length and width will vary depending on motor.
M.S.= Mounting Surface
Efficiency is calculated at 100% of the rated torque.

Performance Specifications
Part
Number

10,000 Hour Life
Tr
Tr
Tr
Ratio1(3000(1000 rpm)
(5000 rpm)
rpm)
Nm [in.-lb.]
Nm [in.-lb.]

20,000 Hour LifeT peakNm [in.-lb.]

Nm [in.-lb.]

UT090-004
UT090-005
UT090-007
UT090-010
UT090-016
UT090-020
UT090-025
UT090-028
UT090-035
UT090-040
UT090-050
UT090-070
UT090-100

4:1
5:1
7:1
10:1
16:1
20:1
25:1
28:1
35:1
40:1
50:1
70:1
100:1

86 [762]
84 [740]80 [706]
47 [418]
95 [838]
96 [849]
93 [820]
98 [864]
94 [834]
99 [880]
96 [849]
91 [802]63 [554]78 [689]
76 [672]
73 [646]
41 [360]
88 [780]
90 [792]
87 [767]
92 [811]89 [784]
94 [829]
91 [801]86 [760]
55 [486]

73 [649]
72 [636]
69 [615]38 [335]
85 [749]
86 [762]
84 [740]
88 [782]
86 [758]
91 [802]
88 [777]
83 [738]
52 [456]

179 [1581]
174 [1537]
166 [1469]
157 [1393]
197 [1743]
199 [1762]
192 [1698]
202 [1789]
194 [1721]
205 [1813]
197 [1743]
185 [1639]
173 [1529]

J
Tr
Tr
Tr
kg-cm2(1000 rpm) (3000 rpm) (5000 rpm) [in.-lb.-sec2x10-4]
Nm [in.-lb.]

Nm [in.-lb.]

Nm [in.-lb.]

84 [746]
82 [723]78 [690]
44 [387]
93 [820]
94 [830]
91 [801]
96 [845]
92 [815]
97 [861]
94 [830]
89 [784]
58 [513]74 [652]
74 [657]
71 [632]
38 [333]
86 [762]
88 [775]
85 [750]
90 [793]
87 [767]
92 [811]89 [784]
84 [743]
51 [450]

63 [559]
66 [583]
68 [601]35 [310]83 [732]
84 [746]
82 [723]
86 [765]
84 [741]89 [785]
86 [759]
82 [722]48 [422],46 [4.1],38 [3.4],31 [2.8],27 [2.4],31 [2.8],31 [2.8],31 [2.8],28 [2.5],16 [1.4],16 [1.4],16 [1.4],16 [1.4],15 [1.3]

Torsional
Stiffness

Nm/arc-min[in.-lb./arc-min]

7,00 [61.9]
6,86 [60.7]
6,07 [53.7]
4,46 [39.5]
7,36 [65.1]
7,20 [63.7]
7,07 [62.6]
6,45 [57.1]
6,68 [59.1]
7,37 [65.2]
7,22 [63.9]
6,48 [57.3]
4,50 [39.8]

All ratios are available to ship in 24 hours through the Gearhead Express Program.
1 Ratios are exact, higher ratios are also available, consult factory.

Tr = Rated output torque at rated speed for specific hours of life.

P-8741-BG

10/19

Tpeak = Allowable momentary peak torque for emergency stop or heavy shock loading.
J = Mass moment of inertia reflected to the input shaft (including pinion assembly).

www.bostongear.com

85Micron TRUE Planetary® Gearheads
UltraTRUE™ Size 10

Helical True Planetary Gearheads
AD*

Metricø 90 g6(3.5428/3.5420)

88(3.46)

L

M12 THREAD X
20 (.80) DEEP

3
(.12)

M.S.

10
(.39)

10 h9
(.3937/.3923)

35(1.38)

ø 32 k6(1.2606/1.2599)

50(1.97)
ø 9 (.35) THRU HOLES 4 PL. EQUALLYSPACED ON A
ø 120 (4.72) BOLT CIRCLE

2
(.08)
12
(.47)

Ratio1101 SQ.
(3.98)

28(1.10)

Dimension
Backlash Weight Efficiency‘L’[arc-min]kg [lb.]mm [in.]

4:1 to 10:1
16:1 to 100:1

78 [3.07]
146 [5.75]

4 max
5 max

6 [13]
8 [18]

95%
90%

All dimensions are: mm (in.)
AD** = Adapter length
Adapter length and width will vary depending on motor.
M.S.= Mounting Surface
Efficiency is calculated at 100% of the rated torque.

Performance Specifications
Part
Number

10,000 Hour Life
Tr
Tr
Tr
Ratio1(3000(1000 rpm)
(5000 rpm)
rpm)
Nm [in.-lb.]
Nm [in.-lb.]

20,000 Hour LifeT peakNm [in.-lb.]

4:1
5:1
7:1
10:1
16:1
20:1
25:1
28:1
35:1
40:1
50:1
70:1
100:1

Torsional
Stiffness

Nm [in.-lb.]

Nm [in.-lb.]

Nm [in.-lb.]

Nm/arc-min[in.-lb./arc-min]

252 [2229] 217 [1922] 186 [1649] 514 [4548] 245 [2171]
245 [2168] 220 [1950] 194 [1720] 501 [4434] 240 [2120]
234 [2074] 213 [1882] 201 [1780] 481 [4256] 229 [2028]
138 [1220] 118 [1048] 110 [971] 457 [4044] 128 [1129]
279 [2471] 258 [2284] 247 [2184] 575 [5085] 273 [2416]
283 [2505] 263 [2325] 252 [2229] 582 [5152] 277 [2450]
274 [2422] 255 [2256] 245 [2168] 562 [4974] 268 [2368]
289 [2554] 269 [2384] 259 [2293] 592 [5242] 282 [2498]
279 [2468] 261 [2310] 252 [2227] 571 [5054] 273 [2413]
294 [2604] 276 [2442] 266 [2357] 602 [5327] 288 [2546]
284 [2514] 267 [2364] 258 [2286] 579 [5128] 278 [2458]
269 [2380] 254 [2246] 246 [2177] 546 [4832] 263 [2327]
184 [1626] 161 [1423] 151 [1335] 510 [4510] 170 [1504]

176 [1561]
184 [1628]
196 [1736]
110 [969]
252 [2233]
257 [2273]
249 [2206]
263 [2331]
255 [2259]
270 [2388]
261 [2312]
248 [2197]
149 [1317]

151 [1340] 1,58 [14.0]
158 [1397] 1,36 [12.0]
168 [1489] ,97 [ 8.6]
102 [898],90 [ 8.0]
229 [2030] 1,10 [9.7]245 [2171] 1,10 [9.7]240 [2120] 1,10 [9.7]253 [2242] ,94 [8.3]
246 [2177] ,79 [7.0]260 [2305] ,79 [7.0]253 [2235] ,78 [6.9]241 [2129] ,78 [6.9]
140 [1235] ,78 [6.9]25,7 [227]22,8 [202]21,1 [187]14,4 [128]27,3 [242]24,3 [215]24,3 [215]21,1 [187]20,9 [185]27,4 [243]24,1 [213]21,1 [187]17,2 [152]Nm [in.-lb.]

UT010-004
UT010-005
UT010-007
UT010-010
UT010-016
UT010-020
UT010-025
UT010-028
UT010-035
UT010-040
UT010-050
UT010-070
UT010-100

J
Tr
Tr
Tr
kg-cm2(1000 rpm) (3000 rpm) (5000 rpm) [in.-lb.-sec2x10-4]

All ratios are available to ship in 24 hours through the Gearhead Express Program.
1 Ratios are exact, higher ratios are also available, consult factory.

Tr = Rated output torque at rated speed for specific hours of life.

86

www.bostongear.com

Tpeak = Allowable momentary peak torque for emergency stop or heavy shock loading.
J = Mass moment of inertia reflected to the input shaft (including pinion assembly).

P-8741-BG

10/19

Micron TRUE Planetary® Gearheads
UltraTRUE Size 115

Helical True Planetary Gearheads
AD *L

MetricØ 110 g6
(4.3307/4.3298)

72(2.83)

M12 THREAD X
20 (.80) DEEP35
(1.38)

Ø 32 k6(1.2606/1.2599)

50(1.97)
2
(.08)

12
(.47)

Ratio1

Ø 10 h9(.3937/.3923)

3
(.12)

24
(.94)

115 SQ(4.53)
Ø 8.6 (.34) THRU HOLES
4 PL. EQUALLY SPACED ON A
Ø 130 (5.118) BOLT CIRCLE

Dimension
Backlash Weight Efficiency‘L’[arc-min]kg [lb.]mm [in.]

4:1 to 10:1
16:1 to 100:1

94 [3.70]
162 [6.38]

4 max
5 max

6 [13]
6 [18]

95%
88%

All dimensions are: mm (in.)
AD** = Adapter length
Adapter length and width will vary depending on motor.
M.S.= Mounting Surface
Efficiency is calculated at 100% of the rated torque.

Performance Specifications
Part
Number

10,000 Hour Life
Tr
Tr
Tr
Ratio1(3000(1000 rpm)
(5000 rpm)
rpm)
Nm [in.-lb.]
Nm [in.-lb.]

20,000 Hour LifeT peakNm [in.-lb.]

Nm [in.-lb.]

Nm [in.-lb.]

UT115-004
UT115-005
UT115-007
UT115-010
UT115-016
UT115-020
UT115-025
UT115-028
UT115-035
UT115-040
UT115-050
UT115-070
UT115-100

4:1
5:1
7:1
10:1
16:1
20:1
25:1
28:1
35:1
40:1
50:1
70:1
100:1

J
Tr
Tr
Tr
kg-cm2(1000 rpm) (3000 rpm) (5000 rpm) [in.-lb.-sec2x10-4]

252 [2229] 217 [1922] 186 [1649] 514 [4548] 245 [2171]
245 [2168] 220 [1950] 194 [1720] 501 [4434] 240 [2120]
234 [2074] 213 [1882] 201 [1780] 481 [4256] 229 [2028]
138 [1220] 118 [1048] 110 [971] 457 [4044] 128 [1129]
279 [2471] 258 [2284] 247 [2184] 575 [5085] 273 [2416]
283 [2505] 263 [2325] 252 [2229] 582 [5152] 277 [2450]
274 [2422] 255 [2256] 245 [2168] 562 [4974] 268 [2368]
289 [2554] 269 [2384] 259 [2293] 592 [5242] 282 [2498]
279 [2468] 261 [2310] 252 [2227] 571 [5054] 273 [2413]
294 [2604] 276 [2442] 266 [2357] 602 [5327] 288 [2546]
284 [2514] 267 [2364] 258 [2286] 579 [5128] 278 [2458]
269 [2380] 254 [2246] 246 [2177] 546 [4832] 263 [2327]
184 [1626] 161 [1423] 151 [1335] 510 [4510] 170 [1504]

Nm [in.-lb.]

Nm [in.-lb.]

176 [1561] 151 [1340]
184 [1628] 158 [1397]
196 [1736] 168 [1489]
110 [969] 102 [898]
252 [2233] 229 [2030]
257 [2273] 245 [2171]
249 [2206] 240 [2120]
263 [2331] 253 [2242]
255 [2259] 246 [2177]
270 [2388] 260 [2305]
261 [2312] 253 [2235]
248 [2197] 241 [2129]
149 [1317] 140 [1235]

1,58 [14.0]
1,36 [12.0],97 [ 8.6]
,90 [ 8.0]
1,10 [9.7]
1,10 [9.7]
1,10 [9.7],94 [8.3],79 [7.0],79 [7.0],78 [6.9],78 [6.9],78 [6.9]

Torsional
Stiffness

Nm/arc-min[in.-lb./arc-min]25,7 [227]22,8 [202]21,1 [187]14,4 [128]27,3 [242]24,3 [215]24,3 [215]21,1 [187]20,9 [185]27,4 [243]24,1 [213]21,1 [187]17,2 [152]All ratios are available to ship in 24 hours through the Gearhead Express Program.
1 Ratios are exact, higher ratios are also available, consult factory.

Tr = Rated output torque at rated speed for specific hours of life.

P-8741-BG

10/19

Tpeak = Allowable momentary peak torque for emergency stop or heavy shock loading.
J = Mass moment of inertia reflected to the input shaft (including pinion assembly).

www.bostongear.com

87Micron TRUE Planetary® Gearheads
UltraTRUE™ Size 14

Helical True Planetary Gearheads
L

AD*

M.S.

13
(.51)

Metricø 130 g6
(5.1176/5.1166)

112(4.41)

12 h9(.4724/.4707)

M12 THREAD X
20 (.80) DEEP

5
(.20)

43
(1.69)

ø 40 k6(1.5755/1.5749)

70(2.76)
ø 11 (.43) THRU HOLES
4 PL. EQUALLY SPACED ON A
ø 165 (6.50) BOLT CIRCLE

3
(.12)
14
(.55)

141 SQ.
(5.55)

27(1.06)

Ratio1

Dimension
Backlash Weight Efficiency‘L’[arc-min]kg [lb.]mm [in.]

4:1 to 10:1 110,5 [4.35]
16:1 to 100:1 195 [7.69]

4 max
5 max

14 [31]
18 [40]95%
90%

All dimensions are: mm (in.)
AD** = Adapter length
Adapter length and width will vary depending on motor.
M.S.= Mounting Surface
Efficiency is calculated at 100% of the rated torque.

Performance Specifications
Part
Number

10,000 Hour Life
Tr
Tr
Tr
Ratio1(3000(1000 rpm)
(5000 rpm)
rpm)
Nm [in.-lb.]
Nm [in.-lb.]

20,000 Hour LifeT peakNm [in.-lb.]

Nm [in.-lb.]

Nm [in.-lb.]

UT014-004
UT014-005
UT014-007
UT014-010
UT014-016
UT014-020
UT014-025
UT014-028
UT014-035
UT014-040
UT014-050
UT014-070
UT014-100

4:1
5:1
7:1
10:1
16:1
20:1
25:1
28:1
35:1
40:1
50:1
70:1
100:1

588 [5207]
572 [5066]
549 [4857]
329 [2913]
657 [5817]
667 [5902]
645 [5706]
681 [6026]
658 [5820]
695 [6150]
671 [5935]
635 [5623]
441 [3898]

J
Tr
Tr
Tr
kg-cm2(1000 rpm) (3000 rpm) (5000 rpm) [in.-lb.-sec2x10-4]

521 [4613] 454 [4022] 1184 [10,479] 575 [5092]
511 [4519] 474 [4191] 1156 [10,229] 560 [4954]
494 [4375] 466 [4120] 1113 [9851] 537 [4749]
282 [2492] 260 [2304] 1062 [9399] 305 [2696]
604 [5346] 576 [5095] 1340 [11,860] 643 [5688]
616 [5449] 588 [5207] 1360 [12,035] 652 [5772]
598 [5288] 572 [5066] 1314 [11,625] 630 [5579]
632 [5597] 607 [5369] 1387 [12,274] 666 [5892]
613 [5424] 589 [5215] 1338 [11,837] 643 [5691]
649 [5745] 625 [5530] 1412 [12,498] 680 [6014]
628 [5560] 606 [5363] 1360 [12,034] 656 [5803]
598 [5291] 578 [5118] 1283 [11,359] 621 [5499]
385 [3407] 361 [3193] 1201 [10,627] 408 [3607]

Nm [in.-lb.]

Nm [in.-lb.]

430 [3808]
448 [3968]
478 [4232]
261 [2306]
591 [5227]
602 [5328]
584 [5171]
618 [5473]
599 [5304]
635 [5617]
614 [5437]
585 [5174]
356 [3153]

369 [3267]
385 [3404]
410 [3631]
241 [2132]
559 [4951]
575 [5092]
560 [4954]
593 [5250]
576 [5099]
611 [5408]
593 [5244]
565 [5004]
334 [2954]

6,51 [57.6]
5,02 [44.4]
3,80 [33.6]
3,39 [30.0]
4,21 [37.2]
4,07 [36.0]
4,07 [36.0]
3,53 [31.2]
2,99 [26.4]
2,99 [26.4]
2,85 [25.2]
2,85 [25.2]
2,85 [25.2]

Torsional
Stiffness

Nm/arc-min[in.-lb./arc-min]

55 [487]
51 [452]
47 [420]35 [311]58 [514]54 [479]
54 [479]
47 [417]44 [391]
58 [512]54 [479]
49 [435]
35 [312]

All ratios are available to ship in 24 hours through the Gearhead Express Program.
1 Ratios are exact, higher ratios are also available, consult factory.

Tr = Rated output torque at rated speed for specific hours of life.

88

www.bostongear.com

Tpeak = Allowable momentary peak torque for emergency stop or heavy shock loading.
J = Mass moment of inertia reflected to the input shaft (including pinion assembly).

P-8741-BG

10/19

Micron TRUE Planetary® Gearheads
UltraTRUE Size 18

Helical True Planetary Gearheads
AD*

Metricø 160 g6
(6.2987/6.2977)

112(4.41)

L

15
(.59)

16 h9
(.6299/.6282)

M20 THREAD X
42 (1.65) DEEP

6
(.24)

59
(2.32)

ø 55 k6(2.1662/2.1654)

70(2.76)
ø 13.5 (.53) THRU HOLES
4 PL. EQUALLY SPACED ON A ø 215(8.46) BOLT CIRCLE

3
(.12)
13
(.51)

182 SQ.
(7.17)

27(1.06)

Dimension
Backlash Weight Efficiency‘L’[arc-min]kg [lb.]

Ratio1in. [mm]

4:1 to 10:1
16:1 to 100:1

136 [5.35]
242 [9.54]

4 max
5 max

40 [88]45 [99]95%
90%

All dimensions are: mm (in.)
AD** = Adapter length
Adapter length and width will vary depending on motor.
M.S.= Mounting Surface
Efficiency is calculated at 100% of the rated torque.

Performance Specifications
10,000 Hour Life
Part
T
Tr
Tr
r
Ratio1
Number(1000 rpm) (3000 rpm) (5000 rpm)
Nm [in.-lb.]

UT018-004
UT018-005
UT018-007
UT018-010
UT018-016
UT018-020
UT018-025
UT018-028
UT018-035
UT018-040
UT018-050
UT018-070
UT018-100

4:1
5:1
7:1
10:1
16:1
20:1
25:1
28:1
35:1
40:1
50:1
70:1
100:1

Nm [in.-lb.]

1368 [12108] 1184 [10476]
1333 [11800] 1179 [10430]
1281 [11338] 1144 [10128]
775 [6856]
660 [5841]
1541 [13641] 1408 [12457]
1566 [13855] 1437 [12716]
1515 [13407] 1396 [12359]
1600 [14164] 1479 [13088]
1547 [13691] 1435 [12701]
1636 [14475] 1521 [13460]
1579 [13978] 1474 [13042]
1498 [13256] 1404 [12429]
1042 [9218] 909 [8043]

1016 [8988]
1058 [9366]
1073 [9494]
609 [5387]
1336 [11827]
1368 [12108]
1333 [11800]
1414 [12515]
1376 [12174]
1460 [12920]
1418 [12547]
1355 [11993]851 [7528]

Tr = Rated output torque at rated speed for specific hours of life.

10/19

J

Torsional

Nm [in.-lb.]

Tr
Tr
Tr
(1000 rpm) (3000 rpm) (5000 rpm)

Stiffness
kg-cm2[in.-lb.-sec2x10-4] Nm/arc-min [in.lb./arc-min]2713 [24010]
2654 [23492]
2565 [22699]
2456 [21734]
3111 [27532]
3162 [27986]
3060 [27078]
3233 [28612]
3122 [27633]
3300 [29201]
3181 [28153]
3008 [26621]
2819 [24949]

1337 [11832] 962 [8509]
825 [7300]
1304 [11539] 1002 [8868] 860 [7608]
1253 [11087] 1069 [9458] 917 [8114]
717 [6344]
611 [5404]
563 [4984]
1507 [13339] 1376 [12181] 1250 [11065]
1531 [13549] 1405 [12434] 1337 [11832]
1481 [13110] 1366 [12085] 1304 [11539]
1565 [13851] 1446 [12798] 1383 [12237]
1513 [13388] 1403 [12420] 1345 [11904]
1599 [14154] 1487 [13162] 1428 [12634]
1544 [13668] 1441 [12754] 1386 [12269]
1465 [12963] 1373 [12154] 1325 [11728]
964 [8529]
841 [7442]
787 [6966]

25,9 [229]20,0 [177]14,6 [129]13,0 [115]16,1 [142]15,6 [138]15,6 [138]13,5 [119]11,4 [101]11,4 [101]10,9 [96]10,9 [96]10,9 [96]Nm [in.-lb.]

1 Ratios are exact, higher ratios are also available, consult factory.

P-8741-BG

20,000 Hour LifeT peakNm [in.-lb.]

Nm [in.-lb.]

Nm [in.-lb.]

153 [1358]
150 [1330]
134 [1185]
101 [893]
161 [1429]
156 [1382]
131 [1160]
138 [1225]
124 [1098]
161 [1429]
156 [1382]
138 [1225]
103 [908]

Tpeak = Allowable momentary peak torque for emergency stop or heavy shock loading.
J = Mass moment of inertia reflected to the input shaft (including pinion assembly).

www.bostongear.com

89

Micron TRUE Planetary® Gearheads
UltraTRUE™ Size 22

Helical True Planetary Gearheads
143(5.63)L

AD*

Metricø 180 g6
(7.0861/7.0851)

17
(.67)

20 h9
(.7874/.7854)

M20 THREAD X
42 (1.65) DEEP7(.276)

79.5(3.13)

ø 75 k6(2.9536/2.9528)

90(3.543)
ø 17 (.67) THRU HOLES
4 PL. EQUALLY SPACED ON A
ø 250 (9.843) BOLT CIRCLE

3(.118)
18(.71)

220 SQ.
(8.66)

35(1.378)Dimension
Backlash Weight Efficiency‘L’[arc-min]kg [lb.]

Ratio1mm [in.]

4:1 to 10:1
16:1 to 100:1

142.7 [5.62]
243.6 [9.60]

4 max
5 max

74 [162]
95 [209]93%
88%

All dimensions are: mm (in.)
AD** = Adapter length
Adapter length will vary depending on motor.
M.S.= Mounting Surface
Efficiency is calculated at 100% of the rated torque.

Performance Specifications
10,000 Hour Life

20,000 Hour Life

Part
Number

Ratio

Tr
Tr
Tr
(1000 rpm) (3000 rpm) (5000 rpm)

UT022-004
UT022-005
UT022-007
UT022-010
UT022-016
UT022-020
UT022-025
UT022-028
UT022-035
UT022-040
UT022-050
UT022-070
UT022-100

4:1
5:1
7:1
10:1
16:1
20:1
25:1
28:1
35:1
40:1
50:1
70:1
100:1

2256 [19694] 1786 [15806] 1532 [13560] 4644 [41096] 2017 [17850]
2181 [19300] 1862 [16475] 1596 [14125] 4548 [40250] 2102 [18600]
2090 [18496] 1857 [16432] 1703 [15073] 4370 [38671] 2042 [18075]
1263 [11178] 1072 [9488] 987 [8737] 4301 [38060] 1167 [10325]
2521 [20292] 2293 [20292] 2170 [19202] 5247 [46437] 2464 [21805]
2561 [20732] 2343 [20732] 2224 [19683] 5323 [47107] 2504 [22164]
2484 [20205] 2283 [20205] 2174 [19239] 5151 [45583] 2427 [21480]
2620 [21365] 2414 [21365] 2302 [20375] 5427 [48027] 2560 [22660]
2541 [20788] 2349 [20788] 2246 [19878] 5243 [46397] 2481 [21961]
2680 [21998] 2486 [21998] 2381 [21069] 5524 [48888] 2619 [23182]
2595 [21371] 2415 [21371] 2318 [20516] 5328 [47156] 2536 [22443]
2461 [20373] 2302 [20373] 2217 [19623] 5025 [44470] 2405 [21288]
1666 [13121] 1483 [13121] 1387 [12273] 4852 [42941] 1571 [13902]

1

Nm [in.-lb.]

Nm [in.-lb.]

Nm [in.-lb.]

1 Ratios are exact, higher ratios are also available, consult factory.

Tr = Rated output torque at rated speed for specific hours of life.

90

www.bostongear.com

T peakNm [in.-lb.]

Tr
Tr
Tr
(1000 rpm) (3000 rpm) (5000 rpm)
Nm [in.-lb.]

Nm [in.-lb.]

Nm [in.-lb.]

1451 [12838] 1245 [11014]
1511 [13375] 1297 [11475]
1613 [14271] 1383 [12243]
992 [8779]
914 [8085]
2199 [19459] 1886 [16694]
2291 [20273] 2017 [17850]
2232 [19757] 2102 [18605]
2361 [20892] 2231 [19476]
2297 [20327] 2196 [19438]
2431 [21510] 2328 [20602]
2361 [20898] 2267 [20062]
2251 [19922] 2168 [19189]
1369 [12116] 1283 [11356]

J

Torsional
Stiffness

kg-cm[in.-lb.-sec2x10-4] Nm/arc-min [in.lb./arc-min]2

87,0 [7.70]
73,4 [6.50]
62,6 [5.55]
56,9 [5.04]
87,3 [7.73]
73,6 [6.52]
73,1 [6.47]
62,7 [5.55]
62,5 [5.53]
57,2 [5.06]
57,1 [5.05]
57,0 [5.04]
56,9 [5.04]

429 [3793]
414 [3661]
363 [3212]
253 [2235]
436 [3858]
436 [3856]
418 [3699]
435 [3854]
418 [3698]
435 [3851]
418 [3696]
366 [3226]
253 [2238]

Tpeak = Allowable momentary peak torque for emergency stop or heavy shock loading.
J = Mass moment of inertia reflected to the input shaft (including pinion assembly).

P-8741-BG

10/19

Micron TRUE Planetary® Gearheads
Radial and Axial Load Ratings

UT006
Radial For ce , F r, ( N )

3300
2200

.98

Distance X (in)
1.18
1.38

1.57

1.77

1484

50 rpm

5500
4400

.79

1237

100 rpm

990

250 rpm

742

500 rpm

4951000 rpm

1100

248
15

20

25

30
35
Distance X (mm)

40

Speed

Axial Load, Fa

50
100
250
500
1000

7198 [1618]
5710 [1284]
4208 [946]3342 [751]2652 [596]Speed

Axial Load, Fa

50
100
250
500
1000

9903 [2227]
7863 [1768]
5793 [1303]
4599 [1034]
3650 [821]Speed

Axial Load, Fa

50
100
250
500
1000

9903 [2227]
7863 [1768]
5793 [1303]
4599 [1034]
3650 [821]Speed

Axial Load, Fa

50
100
250
500
1000

13,675 [3075]
11,107 [2497]
8435 [1897]
6855 [1542]
5568 [1252]

rpm

Radial For ce , F r, (lb f )

.59

6600

45

N [lbf]

UT075.98

Radial Force , F r, ( N )

7700
6600
5500
4400
3300
2200

Distance X (in)
1.38
1.77

2.17

1979

50 rpm1731

100 rpm

1484
1237

250 rpm

990

500 rpm

742

1000 rpm

495

1100

248
25

35
45
Distance X (mm)rpm

Radial Force , F r, (lb f )

8800

55

N [lbf]

UT090
Radial Force , F r, ( N )

7700
6600
5500
4400
3300

Distance X (in)
1.38
1.77

.98

2.17

1979

50 rpm1731

100 rpm

1484
1237

250 rpm

990

500 rpm

742

1000 rpm

2200

495

1100

248
25

35
45
Distance X (mm)Radial Force , F r, (lb f )

8800

55

rpm

N [lbf]

UT010
Radial Force , F r, ( N )

13200
11000
8800
6600
4400

.79

1.18

1.57

Distance X (in)
1.97
2.36

2.75

3.15

50 rpm

3462
2968
2473

100 rpm1979

250 rpm
500 rpm1000 rpm

1484
990
495

2200
20

30

40

50
60
Distance X (mm)70

Radial Force , F r, (lb f )

15400

rpm

N [lbf]

80

These graphs display the allowable radial load at a given distance (X) from the mounting surface based on an L10 life of 10,000 hours for the mean output speed nmout ,as described on page 9.

P-8741-BG

10/19

www.bostongear.com

91

Micron TRUE Planetary® Gearheads
Radial and Axial Load Ratings

UT115
.79

Radial Force , F r, ( N )

8800
6600

Distance X (in)
1.97
2.36

1.57

2.75

3.15

3462

50 rpm

13200
11000

1.18

2968

100 rpm

2473
1979

250 rpm
500 rpm1000 rpm

1484

4400

990

2200

495
20

30

40

50
60
Distance X (mm)70

Radial Force , F r, (lb f )

15400

Speed

Axial Load, Fa

50
100
250
500
1000

13,675 [3075]
11,107 [2497]
8435 [1897]
6855 [1542]
5568 [1252]

Speed

Axial Load, Fa

50
100
250
500
1000

25,374 [5705]
20,609 [4633]
15,657 [3520]
12,716 [2859]
10,329 [2322]

Speed

Axial Load, Fa

50
100
250
500
1000

34,538 [7765]
27,414 [6163]
20,197 [4541]
16,034 [3605]
12,726 [2861]

Speed

Axial Load, Fa

50
100
250
500

32,351 [3655]
26,277 [2969]
19,962 [2256]
16,214 [1832]

rpm

N [lbf]80

UT014

Radial Force , F r, ( N )

27500
22000
16500
11000

.79

Distance X (in)
2.36
3.15

1.57

3.94

7419

50 rpm6182

100 rpm

4946

250 rpm

3710

500 rpm1000 rpm

2473

5500

1237
20

40

60
80
Distance X (mm)Radial Force , F r, (lb f )

33000

100

rpm

N [lbf]

UT018
Radial Force , F r, ( N )

33000
27500

1.18

1.97

Distance X (in)
2.75

3.54

4.33

50 rpm8655
7419

100 rpm

6182

22000

250 rpm

4946

16500

500 rpm

3710

11000

1000 rpm

2473

5500

1237
30

50

1.574

2.361

70
Distance X (mm)90

Radial Force , F r, (lb f )

38500

rpm

N [lbf]

110

UT022
Distance X (in)
3.148

3.935

4.722
10000

50 rpm35584

100 rpm

8000

26688

250 rpm
500 rpm

6000

17792

4000

1000 rpm

8896

2000
40

60

80

100

Radial Force , Fr , (lb f )Radial Force , Fr , (N )

44480

rpm

N [lbf]

120

Distance X (mm)These graphs display the allowable radial load at a given distance (X) from the mounting surface based on an L10 life of 10,000 hours for the mean output speed nmout ,as described on page 9.

92

www.bostongear.com

P-8741-BG

10/19