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Product Description
The WHEATSTONE Frameless Motors 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
85mm Outer Diameter Frameless Torque Motor
| Motor Specifications | 85WK-口01230-48V-52-11 | 85WK-口01730-48V-52-15 | 85WK-口02730-48V-52-28 | |
| DC Voltage | 48 | 48 | 48 | |
| Rated Power(W) | 380 | 518 | 848 | |
| Rated Torque(NM) | 1.21 | 1.65 | 2.1 | |
| Maximum Torque(NM) | 3.6 | 4.95 | 6.3 | |
| Rated Current(A) | 10.5 | 13 | 16 | |
| Maximum Current(A) | 30 | 39 | 48 | |
| Rated Speed(RPM) | 3000 | 3000 | 3000 | |
| Maximum Speed(RPM) | 4500 | 4500 | 4500 | |
| Moment of Inertia(kg.cm2) | 0.61 | 0.859 | 1.037 | |
| Coefficient of counter-electromotive force(V/Krpm) | 7.5 | 7.5 | 7.3 | |
| Wire resistance(ohms@20°C) | 0.26 | 0.17 | 0.11 | |
| Wire Inductance(mH) | 0.2 | 0.16 | 0.188 | |
| Polar Coordinates(2P) | 11 | 11 | 11 | |
| Weight(g) | 306 | 414 | 736 | |
| Tooth-Slot Torque(mN.m) | 36.3（Reference Values） | 49.5（Reference Values） | 81（Reference Values） | |
| Dimensions(mm) | L1 (Core Height) | 10.5 | 15 | 28 |
| L2 (Rotor Height) | 11 | 15.5 | 28.5 | |
| L3 (Overall Height) | 19.6 | 23.9 | 37.7 | |
86-0519-86163211，86-0519-86163212 
