
BLDC Motor Series 42mm
High-efficiency BLDC motor with an 42 mm frame and durable round housing. Designed for compact installations. Delivers outstanding performance, smooth operation, and superior energy efficiency. Customizable with gear boxes, mounting flange, encoder and integrated driver. CE, RoHS, REACH Compliant.
Electrical Specification
| Parameters | 42L48 | 42L70 |
|---|---|---|
| Number of poles | 10 | 10 |
| Number of phases | 3 | 3 |
| Nominal voltage | 24V | 24V |
| No load speed | 4500RPM | 4600RPM |
| Peak current | 2.84A | 4.82A |
| Nominal speed | 3900RPM | 3800RPM |
| Nominal torque | 50mNm | 114mNm |
| Nominal current | 1.1A | 2.48A |
| Peak torque | 128mNm | 222mNm |
| Nominal power | 20W | 45W |
| Line‑to‑line resistance | 2.5 Ω | 1.38 Ω |
| Line‑to‑line inductance | 1.1 Mh | 0.7 mH |
| Torque constant | 45mNm/A | 46mNm/A |
| Back EMF | 3.05mV/rpm | 3.2mV/rpm |
| Rotor inertia | 27gcm2 | 52gcm2 |
| Motor length | 48mm | 70mm |
Wiring Method
| Type | Color | Functions |
|---|---|---|
| UL1007 AWG22 | Yellow | Phase 1 |
| Blue | Phase 2 | |
| Green | Phase 3 | |
| UL1007 AWG26 | Red | VHall |
| Black | GND | |
| Purple | Hall 1 | |
| White | Hall 2 | |
| Orange | Hall 3 |
Mechanical Parameters
| Radial Play | 0.02mm@450g |
| Axial Play | 0.08mm@450g |
| Max radial force | 10N@10mm |
| Max axial force | 15N |
0ther Parameters
| Winding Type | Star connection |
| Hall Effect Angle | Electrical Angle of 120 degree |
| Dielectric Strength | 600VAC/1S |
| Insulation Resistance | 100MΩ, 500VDC |
| Insulation Class | Class B |
| Ambient Temperature | -20°C ~ +50°C |
Application in Different Scenarios







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Customer Service
United Motion Inc.’s motion solution apply in diverse areas all around the world.
Our sales and engineering support teams are ready to assist you with any questions, including quotation, application support, and product configuration.
Please submit your requirements through our Custom Service Form to ensure a faster response. Or you can reach us at info@unitedmotioninc.com for general inquiries.
Tell Us About Your Application Requirements
United Motion Inc welcomes inquiries and challenges. If you find our standard products cannot meet your need, please feel free to contact us for customization. Our professional engineering and service team will quickly review your need and propose a solution if we can make it.
We look forward to communicating and collaborating with you!