Table 2
Actuator Size
Screw
Torque
75
#8-32
12 in-lbs.
150
#8-32
12 in-lbs.
350
#10-24
35 in-lbs.
c. Mount motor to actuator, slip shaft into coupler. Secure motor to
actuator using 4 screws provided. Allen key sizes and torque values
are provided in Table 2. Be careful not to turn the coupler.
d. Tighten coupler clamp screw so motor shaft is secured (refer to
Table 1 for torque specification). The coupler clamps around the
circumference of the motor shaft. The orientation of any flat on the
shaft does not matter. Replace coupler access plug.
2. Actuator and Motor Models
All Bimba step motors use the same
8-wire wiring color code convention, as
shown below.
Warning: Be sure power is off before
connecting or disconnecting the motor.
Table 3
Frame Winding
Connection
Min. Holding
Torque (oz-in)
Volts Amps Ohms
mH
Rotor Inertia
(oz-in
2
/g-cm
2
)
17
Parallel
62.3
2.9
1.7
1.7
2.5
0.44/82
Series
62.3
5.6
0.85
6.6
10.0
0.44/82
Unipolar
43.9
4.0
1.2
3.3
2.5
0.44/82
23
Parallel
269.1
2.1
4.2
0.5
1.7
2.51/260
Series
269.1
4.2
2.1
2.0
6.8
2.51/260
Unipolar
191.2
3.0
3.0
1.0
1.7
2.51/260
34
Parallel
1260
2.72
5.6
0.48
5.4
15.0/2750
Series
1260
5.43
2.8
1.9
21.6
15.0/2750
Unipolar
906
3.88
4.0
0.97
5.4
15.0/2750
Specifications for Bimba 8-lead 1.8 degree step motors are provided in
Table 3.
3
!
Tighten the coupler clamp screw to the torque value in Table 1.
Figure 1
$
$²
%
%²
6HULHV
$
$²
%
%²
Orange
Org/Wht
Blk/Wht
Black
Red Red/
Wht
Yel/
Wht
Yellow
Orange
Org/
Wht
Blk/Wht
Black
Red
Red/Wht
Yel/
Wht
3DUDOOHO
Yellow
