KM Series High-Torque Stepper Motors

The KM Series of high-torque stepper motors is available in NEMA 23, 34 and 42 frame sizes (60, 90 and 110 mm), offering a wide range of models for most stepper applications. Nominal holding torques range from 0.52 to 30.8 N-m (74 to 4,360 oz-in). These motors provide a cost-effective, high-performance alternative to pneumatic, hydraulic and servo motor systems.

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  • KM06 models: NEMA 23 (60 mm) motors available in 3 stack lengths with torque ratings from 0.38 to 2.47 N-m (54 to 350 oz-in) nominal holding torque
  • KM09 models: NEMA 34 (90 mm) motors available in 3 stack lengths with torque ratings from 2.15 to 8.15 N-m (305 to 1,155 oz-in) nominal holding torque
  • KM11 models: NEMA 42 (110 mm) motors available in 3 stack lengths with torque ratings from 7.3 to 26.5 N-m (1,030 to 3,750 oz-in) nominal holding torque
  • Speeds up to 3,000 RPM meet the velocity requirements of most high torque applications

KM06:

Motor Frame Minimum Holding Torque Rotar Inertia *Weight Maximum Shaft Load Minimum
residual
 Torque
Unipoloar 2Ø on Bipolar 2Ø on Net Ship Overhang Thrust
oz-in
(N-cm)
oz-in
(N-cm)
oz-in-s3
(kg-cm3)
lb
(kg)
lb
(kg)
lb
(kg)
lb
(kg)
oz-in
(N-cm)
KM060 54
(38)
68
(48)
0.00154
(0.108)
1.03
(0.47)
1.1
(0.050)
15
(6.8)
25
(11)
2.0
(1.4)
KM061 128
(90.4)
170
(120)
0.0034
(0.24)
1.6
(0.73)
1.7
(0.77)
15
(6.8)
25
(11)
3.0
(2.1)
KM062 188
(133)
250
(177)
0.0056
(0.395)
2.3
(1.04)
2.5
(1.1)
15
(6.8)
25
(11)
6.0
(4.2)
KM063 263
(186)
350
(247)
0.0084
(0.593)
3.2
(1.45)
3.4
(1.5)
15
(6.8)
25
(11)
7.0
(4.9)

* Weight for motor with leads (add approximately 0.2 lbs for terminal box).

KM09:

Motor Frame Minimum Holding Torque Rotar Inertia *Weight Maximum Shaft Load Minimum
residual
 Torque
Unipoloar 2Ø on Bipolar 2Ø on Net Ship Overhang Thrust
oz-in
(N-cm)
oz-in
(N-cm)
oz-in-s3
(kg-cm3)
lb
(kg)
lb
(kg)
lb
(kg)
lb
(kg)
oz-in
(N-cm)
KM091 305
(21.5)
385
(272)
0.016
(1.13)
3.8
(1.73)
4.0
(1.81)
25
(11)
50
(23)
10
(7.1)
KM092 610
(431)
770
(544)
0.031
(2.19)
6.2
(2.82)
6.4
(2.90)
25
(11)
50
(23)
15
(11)
KM093 915
(646)
1155
(816)
0.47
(3.32)
8.7
(3.95)
8.9
(4.03)
25
(11)
50
(23)
23
(16)

* Weight for motor with leads.

KM11:

Motor Frame Minimum Holding Torque Rotar Inertia *Weight Maximum Shaft Load Minimum
residual
 Torque
Unipoloar 2Ø on Bipolar 2Ø on Net Ship Overhang Thrust
oz-in
(N-cm)
oz-in
(N-cm)
oz-in-s3
(kg-cm3)
lb
(kg)
lb
(kg)
lb
(kg)
lb
(kg)
oz-in
(N-cm)
KML111 1,030
(730)
1,450
(1,020)
0.078
(5.5)
11.0
(5.0)
12.2
(5.5)
75
(34.0)
130
(59.0)
42
(30)
KML112 1,950
(1,380)
2,750
(1,940)
0.155
(10.9)
18.4
(8.3)
19.6
(8.9)
75
(34.0)
160
(72.6)
84
(59)
KML113 2,650
(1,870)
3,750
(2,650)
0.229
(16.2)
25.7
(11.7)
26.9
(12.2)
75
(34.0)
160
(72.6)
106
(75)

* Weight for motor with leads.

TypeTitleSizeDate 
TypeTitleSizeDate 

Brochure

Custom Motor Products BrochureCustom Motor Products Brochure954.7 KB5/17/2016Email

Catalog

Stepper and Synchronous Motors Catalog en-US revCStepper and Synchronous Motors Catalog en-US revC8 MB2/6/2014Email
TypeTitleSizeDate 
US Production