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Product Description
The WHEATSTONE Frameless Motor is engineered for direct integration into customer equipment, offering high torque density, compact design, and precision control. Without a housing, bearings, or feedback device, frameless motors provide maximum design flexibility for engineers who require performance in space-constrained applications.
Compact Integration – Stator and rotor kit design allows direct installation into mechanical structures.
High Torque Density – Optimized electromagnetic design delivers strong torque in a compact footprint.
Precision Performance – Smooth speed regulation and accurate positioning for demanding motion systems.
Thermal Efficiency – Advanced winding technology ensures efficient heat dissipation under high load.
Flexible Design – Customizable dimensions, winding configurations, and mounting options.
Reliability – Built with high-quality insulation materials for long service life in continuous operation.
Motor Type: Frameless Brushless Servo Motor (Stator + Rotor Kit)
Voltage Range: Customizable (Low to High DC/AC supply options)
Torque Output: High torque-to-weight ratio
Cooling: Natural cooling / optional liquid or forced-air cooling
Materials: High-grade laminations, copper windings, rare-earth magnets
Applications: Robotics, aerospace, medical devices, direct-drive systems, industrial automation
50mm Outer Diameter Frameless Torque Motor
| Motor Specifications | 50WK-口00330-48V-30-14 | 50WK-口00530-48V-30-18 | 50WK-口00330-48V-30-30 | |
| DC Voltage | 48 | 48 | 48 | |
| Rated Power(W) | 85 | 141 | 220 | |
| Rated Torque(NM) | 0.27 | 0.45 | 0.7 | |
| Maximum Torque(NM) | 0.8 | 1.35 | 2.1 | |
| Rated Current(A) | 2.5 | 4 | 5.8 | |
| Maximum Current(A) | 7.5 | 12 | 17.5 | |
| Rated Speed(RPM) | 3000 | 3000 | 3000 | |
| Maximum Speed(RPM) | 4500 | 4500 | 4500 | |
| Moment of Inertia(kg.cm2) | 0.076 | 0.098 | 0.163 | |
| Coefficient of counter-electromotive force(V/Krpm) | 7.5 | 7.5 | 7.5 | |
| Wire resistance(ohms@20°C) | 1.4 | 0.9 | 0.45 | |
| Wire Inductance(mH) | 0.74 | 0.55 | 0.35 | |
| Polar Coordinates(2P) | 10 | 10 | 10 | |
| Weight(g) | 120 | 157 | 266 | |
| Tooth-Slot Torque(mN.m) | 8.1（Reference Values） | 13.5（Reference Values） | 21（Reference Values） | |
| Dimensions(mm) | L1 (Core Height) | 13.5 | 17.5 | 29.5 |
| L2 (Rotor Height) | 14 | 18 | 30 | |
| L3 (Overall Height) | 19.9 | 24.6 | 37.9 | |
86-0519-86163211，86-0519-86163212 
