Humanoid Robotics Technology
Shenzhen Mosrac Motor Co., Ltd.

Specializing in the design & manufacturing of frameless motors & housed direct drive rotary motors

U-Series Frameless Torque Motors (Inrunner & Outrunner)

High-performance motion solutions in a compact package

Mosrac Frameless Torque Motors are designed & manufactured to new standards that prioritize precision, efficiency, and flexibility. With their exceptionally high torque density, these motors allow maximum design flexibility while minimizing both weight and space requirements.

Features of U-Series Frameless Torque Motors

  • Lightweight & Compact size – Minimize motor weight while maintaining full performance. This saves space, decreases weight, and reduces costs. The smaller size also simplifies integration, access, and maintenance in mechanical engineering.
  • High Torque Density – Powerful, highly compact design solution for the most demanding applications, focusing on precision control, keeping high power-to-weight ratio.
  • Utmost Design Flexibility – The frameless motors are more versatile, seamlessly integrating with the machine or motion system. Mosrac can customize them to meet a precise size, torque, power, and other special performance needs.
  • Standard or Custom Winding Options – A variety of windings can ensure maximum torque at a desired speed. This service is free of charge.
  • Various Frame Size Options – Mosrac offer a range of frame sizes, from 16mm (0.63 inches) to 200mm (7.88 inches), at a cost-effective price with minimal lead times.

Specifications

  • Designed for operation at 12 VDC, 24 VDC, 48 VDC, 220 VDC, and a custom voltage such as 380 VDC.
  • Rated torque range from 0.01 Nm to 50 Nm or custom, peak torque reaching up to 1000 Nm.
  • Pole Count from 4 to 64 poles or custom.
  • Speeds up to 6,000 rpm.
  • Designed to perform well without exceeding 150°C.
ModelOD
(mm)
ID
(mm)
Related TorqueRelated Power
(W)
Related Speed
(rpm)
U16151640.011.571500
U16251640.023.141500
U19191970.0212.586000
U19341970.0416.774000
U25102511.60.02510.484000
U25152511.60.0520.964000
U25232511.60.07531.444000
U32123219.30.0736.75000
U381538180.131.43000/ 3500
U382238180.262.83000/ 3500
U383438180.351283000/ 3500
U43154325.30.1683.85000
U501950280.27853000
U502450280.451413000
U503750280.72203000
U601760330.45141.53000
U602260330.6188.53000
U6035603313143000
U681868370.652043000
U682268370.862703000
U683668371.554873000
U761876420.9282.73000
U762376421.25392.73000
U763676422.16603000
U851985471.21380.423000
U852385471.65518.763000
U853785472.69704.782500
U941994511.58496.753000
U942494512.05644.522500
U943794513.67576.921500
U11526115653943.22500
U11530115653.91021.82500
U11544115656.1958.921500
U13025130845419.2/1048800/2000
U13035130849471.6/1414.8500/1500
U130601308418754.56/1509.12400/800
U160251601069471.6/1886.4500/2000
U1603516010615471.6/1257.6300/800
U1606016010632670.72/2012.16200/ 600
U2002520014013408.72/1089.92300/800
U2003520014024503.04/1257.6200/500
U2006020014050524/1572100/300

Contact Information

  • Building 3, COFCO (Fu'an) Robot Technology Park, No.90, Dayang Road, Bao'an District, Shenzhen, Guangdong, China 518103
  • +86-18100274370
  • [email protected]
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