B18 Series
Major dimensions (with Hall-effect sensor and Temperature sensor)

B18-13 | B18-25 | B18-38 | B18-51 | B18-64 | B18-76 | |
---|---|---|---|---|---|---|
Overall length A (mm) |
51 | 64 | 81 | 93 | 107 | 120 |
Core dimension B±0.5 (mm) |
14 | 26.5 | 39.5 | 51.5 | 64 | 77 |
Yoke dimension C±0.1 (mm) |
22 | 34 | 46 | 59 | 71 | 84 |
Motor mass (kg) |
2.5 | 3.7 | 5.4 | 6.8 | 8.2 | 9.7 |
Specifications
B18-13 | B18-25 | B18-38 | B18-51 | B18-64 | B18-76 | |
---|---|---|---|---|---|---|
Max. rotation speed N [r/min] |
2,700 | 1,900 | 1,090 | 790 | 640 | 530 |
Rated max. torque T [N・m] |
5.7 | 7.9 | 13 | 17.6 | 21 | 24.7 |
Motor constant KM [N・m/√W] |
0.61 | 0.81 | 1.26 | 1.62 | 1.88 | 2.12 |
Torque constant Kt [N・m/A] |
0.69 | 0.96 | 1.74 | 2.41 | 2.98 | 3.57 |
Rotor inertia JM [kg・m 2] |
0.9×10-3 | 1.1×10-3 | 1.9×10-3 | 2.4×10-3 | 2.9×10-3 | 3.4×10-3 |
Running torque curve

Simulation conditions
- *1 The simulation conditions are examples. We perform individual simulations based on the customer's specifications.
- Continuous rated torque is expressed (duty100%).
- Heat radiation condition: Natural heat radiation
- Envrionmental temperature: 40℃
- Winding maximum temperature: Up to 85℃
- *2Rotation detector is not considered.
Formula for calculating torque
√3/2 × torque constant between terminals Kt (N·m/A) × motor current lm [A]
Contact Information
Click here for product inquiries.
Search for other products and services