This 42mm BLDC motor is designed for 6–48V systems where selection is driven by the maximum-efficiency working point and stall limits, keeping output capability and driver risk explicit at the planning stage.
This model is a 42mm BLDC motor platform defined by its maximum-efficiency operating data and clearly bounded stall behavior, making selection straightforward when higher output and current exposure must be evaluated early.
| Motor model | Voltage | No-load | At Maximum Efficiency | Stall | ||||||
| Current | Speed | Current | Speed | Torque | Output | Efficiency | Torque | Current | ||
| V | A | r/min | A | r/min | g.cm mN.m | W | % | g.cm mN.m | A | |
| BL4250M-01 | 12 | 0.24 | 3100 | 1.33 | 2600 | 380.0 37.28 | 10.13 | 68.5 | 2353 230.8 | 6.38 |
| BL4250M-02 | 18 | 0.22 | 6400 | 1.18 | 5400 | 270.0 26.49 | 14.98 | 70.5 | 1743 170.9 | 6.42 |
| BL4250M-03 | 24 | 0.35 | 8600 | 1.52 | 7250 | 370.0 36.30 | 27.53 | 75.3 | 2365 232.0 | 7.84 |
For additional customization or reference configurations, please feel free to contact us.
Each configuration lists the real operating speed, torque, output, and efficiency at maximum efficiency, so selection aligns with where the motor will actually run.
With output ranging from 10.13 to 27.53 W, you can immediately screen configurations by the mechanical power your system requires at realistic speed.
Stall current between 6.38 and 7.84 A sets the boundary for driver sizing, current limiting, and wiring design before mechanical decisions are finalized.
No-load speed spans 3100–8600 r/min, letting you tune RPM class through voltage configuration while keeping the 42mm mechanical envelope unchanged.
If you share your available space and the driven load type, we can help narrow the most suitable configuration quickly.
English
Japanese
Korean
Tell us about your project or application, and our team will get back to you with technical support, product recommendations, or a customized motor solution.
