Specification
| Model | U2510 | U2515 | U2523 | |
| Voltage(VDC) | 24 | 24 | 24 | |
| Rated Output(W) | 15.7 | 31.4 | 47.1 | |
| Rated torque(Nm) | 0.025 | 0.05 | 0.075 | |
| Instant Max Torque(Nm) | 0.075 | 0.15 | 0.225 | |
| Rated Current(Arms) | 2 | 2.1 | 3 | |
| Instant Max Current(Arms) | 6 | 6.3 | 9 | |
| Rated Speed(rpm) | 6000 | 6000 | 6000 | |
| Max Speed(rpm) | 8000 | 8000 | 8000 | |
| Torque Parameter(Nm/Arms) | 0.0125 | 0.024 | 0.025 | |
| Rotor inertia(kg.cm²) | 0.002 | 0.003 | 0.006 | |
| Back EMF coefficient(V/KRPM) | 0.93 | 1.67 | 1.95 | |
| Resistance(Ω) | 0.92 | 1.32 | 0.95 | |
| Inductance(mH) | 0.18 | 0.28 | 0.95 | |
| Pole-pairs number(2P) | 7 | 7 | 7 | |
| Weight(kg) | 0.019 | 0.003 | 0.006 | |
| Cogging Torque(mN.m) | 0.45(REF.) | 0.9(REF.) | 1.35(REF.) | |
| Size(mm) | L1 (Stator stack height) | 6.3 | 10.5 | 18.5 |
| L2 (Rotor height) | 7.3 | 11.5 | 19.5 | |
| L3 (Overall height) | 11.2 | 15.6 | 23.7 | |
Applicable Inductive encoders
Drawing
Case studies (Customized frameless motors developed with our clients)
Additional Info
Features
Frame size: Ø25mm OD, Ø11.60mm hollow shaft
Axial length: 11.2mm – 23.7mm across U2510 / U2515 / U2523
Max speed: up to 8,000 rpm
Pole-pairs (2P): 7, custom configurations available
Rated voltage: 24 VDC
Rated current: 2.0 – 3.0 A
Continuous torque: 0.025 – 0.075 N.m
Peak torque: up to 3× continuous rating (0.075 – 0.225 N.m)
Compliance: CE, RoHS, REACH
Custom windings available to match specific speed/torque requirements
Optional magnetic or inductive encoder for rotor position feedback
Benefits:
One of the latest next-generation frameless motors is the hollow-shaft U25 series stator-rotor kit, which offers market-leading torque density and maximum design freedom for structurally integrated drive engineering.
Our frameless BLDC motor range is available in various sizes and rated torques.
Frameless construction provides a high level of design flexibility
Offers excellent torque density at a competitive price
Features hollow-shaft capability
Lightweight and compact design
Operates on low voltage, ranging from 24V to custom
High torque density and dynamic performance are achieved through an excellent copper fill factor
Reduced thermal losses due to concentrated coils
Drive system design is optimized for weight and installation space based on load profile analysis
Provides excellent dynamic control and precision
Ideal for a diverse range of applications
Applications:
Robotics/Humanoids robots/Robot Arms & Cobots
Automotive
Aerospace
Healthcare
Industrial Automation
Download
U2510 Torque Motor Outline Drawing.pdf
OD: 25mm|Height: 10.8mm
U2515 Torque Motor Outline Drawing.pdf
OD: 25mm|Height: 15.2mm
U2523 Torque Motor Outline Drawing.pdf
OD: 25mm|Height: 23.4mm
U25 Series Ø25mm, Frameless Inrunner BLDC Motor, 24 V | Dynamic Torque Catalog.pdf
OD: 25mm|Height: 10.8~15.2~23.4mm optional
OD: 25mm|Height: 10.8mm
OD: 25mm|Height: 15.2mm
OD: 25mm|Height: 23.4mm
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Frequently bought together - Magnetic encoders
Direct drives need high-quality position signals to ensure optimal performance. Perfect measuring signals can enhance the surface quality of machined workpieces, reduce the machine frame's vibrations, minimize velocity-dependent motor noise, and prevent excessive heat generation in the motor.
Mosrac recommends using a magnetic encoder to enhance the accuracy, speed stability, and thermal behavior of direct drive axes. Because there is no mechanical transmission between the encoder and the feed unit, the position signals are not susceptible to inaccuracies or delays.
Custom combinations are available on request and contact us.
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