Omega offers a robust line of 2-phase biploar
step motors ranging in frame size from NEMA 11
to NEMA 34. Most of our models are the high torque style, with
holding torques up to 1845 oz-in. All motors
conform to industry-standard NEMA mounting
dimensions, and are offered with a range of well-featured,
compatible drives and indexers. With the exception of our
two smallest motors (OMHT11-013, OM5014-842), all of our step
motors are optimized for microstepping: they can achieve
a stepping resolution of up to 51,200 steps/revolution (.007°
per step) when operated by one of our microstepping drives.
Although it is not necessary, these motors can be fitted with one
of our incremental encoders, which can aid in stall detection and
prevention.
Most of the stepper motors are
8-lead motors, offering the flexibility of either series or parallel
connection. The motors should be series connected for best torque
at low speeds, and parallel connected for best torque at higher speeds.
Important Note About
Motor Current vs Drive Current: When setting the drive current, you should multiply the
stepper motor's nameplate current by 1.2 to convert rms
current to peak-of-sine current. If the motor current is specified as
5 Amps, set the drive current to 6 Amps (5 x 1.2) to achieve the
motor's rated output torque.
Motor Wiring --- Series Connection (8-lead motors): Drive A+ = Orange
Drive A- = Black
Drive B+ = Red
Drive B- = Yellow
Connect Orange/White to Black/White (not connected to drive)
Connect Red/White to Yellow/White (not connected to drive)
Motor Wiring (4-lead motors): Drive A+ = Red
Drive A- = Blue
Drive B+ = Yellow
Drive B- = White
OPTIMAL DRIVE/MOTOR COMBINATIONS -- "X" INDICATES PRIMARY MOTOR CHOICE
Drive
MOTOR
1240i
2035
3540i
3540M
3540MO
Si3540
STR2
STR4
STR8
ST5-S/Si
ST10-S/Si
STAC6-S/Si
OMHT11-013
X
X
X
OM5014-842
X
X
X
OMHT17-075
X
X
X
X
X
X
X
X
OMHT17-275
X
X
X
X
X
X
X
X
OMHT17-278
X
X
X
X
X
X
X
X
OMHT23-393
X
X
X
X
X
X
X
X
OMHT23-593
X
X
X
X
X
X
X
X
OMHT23-397
X
X
X
X
X
X
X
OMHT23-597
X
X
X
X
X
X
X
OMHT23-400
X
X
X
X
X
X
X
OMHT23-600
X
X
X
X
X
X
X
OMHT23-603
X
X
X
X
X
X
OMHT24-100
X
X
X
X
X
X
OMHT24-105
X
X
OMHT24-108
X
X
OMHT34-504
X
X
OMHT34-485
X
X
OMHT34-505
X
X
OMHT34-486
X
X
OMHT34-506
X
X
OMHT34-487
X
X
OMHT23-550
X
OMHT34-488
X
OMHT34-490
X
RECOMMENDED MOTORS
MODEL NO.
MOTOR CONNECTION 1 = SERIES 2 = PARALLEL 3 = UNIPOLAR
MOTOR LENGTH mm (in)
HOLDING TORQUE2 (oz-in)
LEADS
STEP ANGLE (DEG)
VOLTS
AMPS
OHMS
MH
ROTOR INERTIA (oz-in2/ g-cm2)
MOTOR WEIGHT g (lb)
OMHT11-013
2
48 (1.87)
15
4
1.8
2.0
1.0
2.0
2.6
0.098/18
177 (0.39)
OM5014-842
2
40 (1.57)
26.0
4
1.8
4.8
1.0
4.3
5.5
0.109/20
213 (0.47)
OMHT17-075
1
47 (1.85)
62.8
8
1.8
5.7
0.85
6.6
12.0
0.37/68
331 (0.73)
2
2.8
1.70
1.7
3.0
3
44.4
4.0
1.20
3.3
3.0
OMHT17-275
1
48 (1.90)
62.3
8
1.8
5.7
0.85
6.6
10.0
0.44/82
357 (0.79)
2
2.8
1.70
1.7
2.5
3
44.0
4.0
1.20
3.3
2.5
OMHT17-278
1
63 (2.47)
113
8
1.8
6.4
1.0
6.4
12.0
0.66/121
357 (1.32)
2
3.2
2.0
1.6
3.0
3
79.0
4.5
1.40
3.2
3.0
OMHT23-393
1
39 (1.54)
76.6
8
1.8
7.4
0.71
10.4
21.6
0.66/120
454 (1.00)
2
3.7
1.41
2.6
5.4
3
54.2
5.2
1.00
5.2
5.4
OMHT23-593
1
41 (1.61)
79.3
8
1.8
7.4
0.71
10.4
26.1
0.73/135
417 (0.92)
2
3.7
1.41
2.6
6.6
3
59.4
5.2
1.00
5.2
6.6
OMHT23-397
1
54 (2.13)
177.0
8
1.8
5.1
1.41
3.6
10.0
1.64/300
699 (1.54)
2
2.5
2.83
0.9
2.5
3
125.0
3.6
2.00
1.8
2.5
OMHT23-597
1
54 (2.13)
177.0
8
1.8
5.1
1.41
3.6
10.8
1.42/260
599 (1.32)
2
2.5
2.83
0.9
2.7
3
127.4
3.6
2.00
1.8
2.7
OMHT23-400
1
76 (2.99)
264.0
8
1.8
6.4
1.41
4.5
14.4
2.62/480
998 (2.20)
2
3.2
2.83
1.1
3.6
3
187.0
4.5
2.00
2.3
3.6
OMHT23-600
1
76 (2.99)
264.8
8
1.8
6.4
1.41
4.5
15.6
2.51/460
998 (2.20)
2
3.2
2.83
1.1
3.9
3
187.0
4.5
2.00
2.3
3.9
OMHT23-603
1
111 (4.37)
354
8
1.8
5.0
2.5
2.0
8.8
4.02/735
1497 (3.30)
2
2.5
5.0
0.5
2.2
3
264
3.5
3.5
1.0
2.2
OMHT23-5501
1
78 (3.05)
255.0
8
1.8
6.3
1.41
4.5
15.2
2.62/480
998 (2.20)
2
3.2
2.83
1.13
3.8
3
180.5
4.5
2.00
2.25
3.8
OMHT24-100
2
44 (1.73)
123
4
1.8
2.0
2.8
0.73
1.6
1.42/260
599 (1.32)
OMHT24-105
2
54 (2.13)
177
4
1.8
1.7
4.0
0.43
1.1
2.46/450
830 (1.83)
OMHT24-108
2
85 (3.35)
354
4
1.8
2.6
4.0
0.65
2.4
4.91/900
1402 (3.09)
OMHT34-504
1
66 (2.62)
396
8
1.8
3.05
3.18
0.96
6.8
6.0/1100
1588 (3.5)
2
1.51
6.3
0.24
1.7
3
297
2.16
4.5
0.48
1.7
OMHT34-485
1
79 (3.11)
650
8
1.8
3.2
4.3
0.76
5.2
7.8/1400
2803 (6.18)
2
1.6
8.6
0.19
1.3
3
455
2.26
6.0
0.38
1.3
OMHT34-505
1
96 (3.78)
849
8
1.8
4.20
3.18
1.32
10.8
10.1/1850
2676 (5.9)
2
2.08
6.3
0.33
2.7
3
608
2.97
4.5
0.66
2.7
OMHT34-486
1
118 (4.63)
1200
8
1.8
4.4
4.1
1.08
8.8
14.6/2680
3810 (8.40)
2
2.2
8.1
0.27
2.2
3
840
3.1
5.7
0.54
2.2
OMHT34-506
1
125 (4.94)
1260
8
1.8
5.43
2.8
1.94
21.6
15.0/2750
3810 (8.4)
2
2.74
5.6
0.49
5.4
3
906
3.88
4.0
0.97
5.4
OMHT34-487
1
156 (6.14)
1845
8
1.8
4.8
4.5
1.08
9.6
21.9/4000
5398 (11.9)
2
2.4
9.0
0.27
2.4
3
1290
3.4
6.3
0.54
2.4
OMHT34-4881
1
79 (3.11)
650
8
1.8
3.2
4.3
1.6
5.2
7.8/1400
3629 (8.00)
2
1.6
8.6
0.4
1.3
3
455
2.26
6.0
0.8
1.3
OMHT34-4901
1
156 (6.14)
1845
8
1.8
4.5
4.8
1.7
9.6
21.9/4000
5398 (11.9)
2
2.25
9.6
0.42
2.4
3
1290
3.2
6.8
0.85
2.4
1Motor with 3m (10') shielded cable
2Guaranteed minimum holding torque; actual torque may be 5-10% greater
† All dollar amounts on this site are shown in US currency.
Note: Optional encoders can only be added to double shaft versions. Encoders offered are differential encoders with line drivers. These provide two channels of signals with complementary signals. Versions with index also offer Z-channel and its complementary signal. Ordering Example: (1) OMHT34-490-D NEMA 34 high torque step motor with 1845 oz-in min holding torque with 3 m (10') shielded cable and double shaft, $545.00
