| 2-Phase
and 5-Phase Step Motor Comparison
Specification Comparison
| Series |
Frame
Sizes |
Power
Supply |
Geared
Type
Available |
Max.
Holding
Torque* |
Rotor
Inertia* |
Basic
Step
Angle* |
| RK (5-Phase)
Microstep |
1.65
in.sq.
2.36 in.sq.
3.35 in.sq. |
AC |
Yes |
1.84
oz-in
to
320 lb-in |
0.191
oz-inē
to
22 oz-inē |
0.0072°
to
0.72° |
| CFK II (5-Phase)
Microstep |
0.79
in.sq.
1.10 in.sq.
1.65 in.sq.
2.36 in.sq.
3.35 in.sq. |
DC |
No |
3.2
oz-in
to
55.6 lb-in |
0.0142
oz-inē
to
22 oz-inē |
0.72° |
| CSK (5-Phase)
Full/Half-Step |
1.65
in.sq.
2.36 in.sq.
3.35 in.sq. |
DC |
Yes |
18.4
oz-in
to
55.6 lb-in |
0.191
oz-inē
to
22 oz-inē |
0.024°
to
0.72° |
| PMC (5-Phase)
Full/Half-Step |
1.10
in.sq. |
DC |
Yes |
4.6
oz-in
to
17.5 lb-in |
0.049
oz-inē
to
0.098 oz-inē |
0.0072°
to
0.72° |
| UMK (2-Phase)
Full/Half-Step |
1.65
in.sq.
2.22 in.sq. |
AC |
No |
22
oz-in
to
11.9 lb-in |
0.191
oz-inē
to
2.6 oz-inē |
0.9°
to
1.8° |
| CSK (2-Phase)
Full/Half-Step |
1.65
in.sq.
2.22 in.sq.
3.35 in.sq. |
DC |
Yes |
22
oz-in
to
58.1 lb-in |
0.191
oz-inē
to
22 oz-inē |
0.05°
to
1.8° |
*Geared
Type offer higher Max. Holding Torque, higher Rotor Inertia, and smaller
Basic Step Angle
ORIENTAL MOTOR also offers a full line of 2-Phase Step Motors (motors only).
| Series |
Frame
Sizes |
Power
Supply |
Geared
Type
Available |
Max.
Holding
Torque* |
Rotor
Inertia* |
Basic
Step
Angle* |
| PK/PV Series (2-Phase)
Motor Only |
1.10
in.sq.
1.38 in.sq.
1.65 in.sq.
2.22 in.sq.
2.36 in.sq.
3.35 in.sq.
3.54 in.sq. |
N/A |
Yes |
7.1
oz-in
to
106 lb-in |
0.049
oz-inē
to
22 oz-inē |
0.05°
to
1.8° |
*Geared
Type offer higher Max. Holding Torque, higher Rotor Inertia, and smaller
Basic Step Angle.
Conclusion
Depending on
your particular application, a 2-phase motor may suffice. However,
5-phase step motors offer higher resolution, lower vibration, higher
acceleration and deceleration rates (due to smaller step angles),
and are less likely to lose synchronization due to overshooting/undershooting
than a 2-phase step motor. For applications requiring high precision,
low noise and low vibration, 5-phase is the better technology.
Want
to learn more?
ORIENTAL MOTOR's
Technical Support Team and Application Engineers will work with
you to determine the best solution for your application. 2-Phase,
5-Phasse, Full-Step, Microstep? ORIENTAL MOTOR's experienced team
members know the technology inside and out. We'll find the right
solution based on your needs and explain the alternatives. Call
1-800-GO-VEXTA (468-3982)
to speak with an ORIENTAL MOTOR Technical Support Team Member.
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