Factory-side rotor and stator kit sourcing for industrial OEM projects, from compact robot joint motors to large hollow-shaft direct-drive torque motors and custom motor assemblies.
Use this page as a pre-RFQ navigator: pick the product family, capture the correct OD/ID, torque-speed, voltage, thermal, and integration inputs, then move directly to sample validation criteria that buyers can approve.
Use this matrix before asking for a part number. Frameless motor selection usually starts from physical packaging: OD, ID, stack length, through-hole need, reducer fit, and thermal path. Final torque values still require the exact winding and cooling basis.
| Screening Band | Typical Use | Architecture Cue | RFQ Data to Lock |
|---|---|---|---|
| Mini / compact OD below 50 mm | Small robot joints, compact actuators, medical or lab modules | Prioritize torque density, lead exit, sensor space, and low-speed smoothness. | OD/ID, stack limit, reducer or bearing layout, current limit, sample purpose. |
| Standard OD 50-150 mm | Cobot joints, direct-drive rotary axes, inspection and automation modules | Balance continuous torque, thermal path, rotor retention, and drive voltage. | Continuous torque, peak torque duration, speed, cooling method, mounting interface. |
| Large OD above 150 mm | Rotary tables, large gimbals, indexing stages, payload rotation systems | Check aperture, runout-sensitive mechanics, assembly tooling, and heat removal. | Required ID, maximum OD, stack length, cable/optics route, installation constraints. |
| Custom ID/OD or interface | Imported motor replacement, custom OEM assemblies, special winding programs | Treat the request as a controlled engineering project, not a catalog substitution. | Drawing revision, selected winding target, lead exit, sensor option, validation gates. |
Rotor and stator motor kits for direct-drive rotary axes, robot joints, gimbals, and precision OEM machinery.
Best for OEM engineering teams replacing geared rotary drives with compact direct-drive torque control.
High torque density frameless motors for cobot, humanoid, exoskeleton, and compact actuator modules.
Best for robotics teams that need high torque density and fast iteration without high overseas-brand MOQ friction.
Large-aperture direct-drive motor kits for gimbals, rotary tables, cable pass-through axes, and precision indexing systems.
Best for equipment builders that need a large aperture, smooth rotary control, and factory-side customization coordination.
Custom rotor/stator kits and motor subassemblies for buyers that need project-specific winding, geometry, wiring, or sensor integration.
Best for OEM buyers whose mechanical envelope or electrical system cannot use an off-the-shelf motor kit.
| Product Family | Primary Buyer Focus | Key Metric | Why It Matters |
|---|---|---|---|
| Frameless Torque Motors | Best for OEM engineering teams replacing geared rotary drives with compact direct-drive torque control. | Continuous torque: 0.2-80 N·m by frame and cooling path | Defines sustained load capability after thermal limits are considered. |
| Compact Robot Joint Motors | Best for robotics teams that need high torque density and fast iteration without high overseas-brand MOQ friction. | Torque density: Optimized by magnet grade, stack length, and cooling path | Directly affects robot payload, joint size, and battery/runtime tradeoffs. |
| Large Hollow-Shaft Torque Motors | Best for equipment builders that need a large aperture, smooth rotary control, and factory-side customization coordination. | Inside diameter: Custom large-aperture geometry by project | Determines whether optics, cables, slip rings, or shafts can pass through the axis. |
| Custom OEM Motor Assemblies | Best for OEM buyers whose mechanical envelope or electrical system cannot use an off-the-shelf motor kit. | Customization scope: Winding, stack, lead wire, sensor, potting, interface | Clarifies whether a standard variation or a new development path is required. |
A selection of frameless torque motor kits and direct-drive motor components from the product portfolio.
Inquiry Email
Include target torque/speed, quantity, and delivery location.