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Humanoid Joint logoNEMA Stepper Motors
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Humanoid Joint logoNEMA Stepper Motors

China-based NEMA stepper motor factory supporting OEM customization, quality control, and global delivery.

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[email protected]

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Send target torque/speed, quantity, and destination for faster RFQ response.

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+86 18857971991

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Direct technical discussion with our engineering team.

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© 2026 NEMA Stepper Motors. All Rights Reserved.|China Factory | OEM/ODM Programs
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Frameless Torque Motor Kit

Frameless stator/rotor set for custom humanoid joint packaging where torque density and envelope efficiency are critical.

Target Buyer:Teams with in-house mechanical/control engineering that require deep customization freedom.
Humanoid Robot Frameless Torque Motor Stator Rotor Assembly Silver

Engineering Resources

Download exact 3D STEP models, 2D installation tolerances, and electrical wiring PDFs. Verified for standard OEM integration.

Request 3D STEPDatasheet & 2D PDF

Capability Highlights

  • High packaging flexibility for custom joint architecture
  • Enables lightweight designs with reduced mechanical losses
  • Suitable for direct-drive or low-ratio transmission strategies

Typical Applications

  • Shoulder and elbow joint custom architectures
  • Advanced wrist and dexterous manipulator joints
  • Research programs with proprietary mechanical stack

Engineering Focus

  • Confirm stator/rotor mechanical interface and tolerance stack
  • Validate cooling strategy for continuous operation
  • Align sensor and reducer stack-up for control performance
  • Check manufacturability of housing and assembly workflow

Architecture & Performance Analysis

Exploded view and deterministic T-N operational envelope.

SYSTEM_ARCHITECTURE_v2.1
19-bit EncoderFrameless Torque MotorFriction BrakeStrain Wave GearTorque SensorOutput FlangeEtherCAT/CAN FD Bus
* Schematic representation. Proportions not to scale.
Feedback
Power
Transmission
PERFORMANCE_MAP_T-N
Speed (RPM)Torque (N·m)Tc: 30.1Tp: 80.0Nmax: 5846Knee Point
* Graph represents nominal 48V DC bus operation.
S1 (Continuous Duty)
S3 (Intermittent Duty)

Key Evaluation Matrix

MetricTypical RangeWhy It Matters
Torque densityApplication-specific high-density configurationHigher torque density enables smaller joints and better whole-body mass distribution.
Thermal resistance pathDefined by housing and cooling architectureThermal stability drives repeatability in long-cycle operation.
Mechanical envelope efficiencyOptimized per joint axis geometryEnvelope utilization affects available motion range and integration feasibility.

Standard Technical Specifications

Reference parameters for the base configuration.

SpecificationTypical Range / ValueUnit
Peak Torque (Tmax)177.2N·m
Continuous Torque (Tc)106.3N·m
Nominal Voltage48V DC-
Max Output Speed71RPM
System Weight2.29kg
Ingress ProtectionIP65-
Communication InterfaceCAN FD / RS485-
* Note: These parameters represent the standard hardware configuration. Custom windings and ratios are available for OEM programs.

RFQ Checklist

  1. Target torque/speed envelope and duty cycle
  2. Mounting envelope and rotor inertia constraints
  3. Cooling and thermal interface assumptions
  4. Driver and sensing architecture
  5. Revision-controlled CAD references

Risk Controls

  • Thermal derating under real motion cycle: Model thermal path with duty profile and verify during sample testing.
  • Assembly tolerance drift causing performance instability: Define CTQ dimensions and incoming/in-process inspection checkpoints.
  • Controller mismatch in high-dynamic maneuvers: Align motor constants and control loop assumptions in pre-RFQ review.

Product Gallery

Humanoid Robot Frameless Torque Motor Stator Rotor Assembly Silver
Humanoid Robot Frameless Torque Motor Stator Rotor Assembly Silver
Humanoid Robot Frameless Torque Motor Stator Rotor Assembly Silver
Humanoid Robot Frameless Torque Motor Stator Rotor Assembly Silver

Buyer FAQ

Can we pair frameless motors with our existing reducer platform?

Yes. Share reducer constraints, inertia budget, and control architecture for compatibility review.

Do you provide manufacturability feedback for custom housings?

Yes. We provide DFM feedback on tolerance, process route, and assembly risks before sample lock.

How do we shorten iteration cycles for custom joints?

Use revision-controlled CAD and agreed validation gates so each sample loop has clear pass/fail evidence.

Related Resources

  • Upper-Limb Dexterity Application
  • Manufacturing Power & QA
  • Contact & RFQ

Engineering Download Starter Pack

Public download links for procurement and engineering teams. No account or login required.

  • RFQ template (.csv)
  • Specification template (.csv)
  • Test report template (.csv)
  • Full resource index

Inquiry Email

[email protected]

Open email app

Send target torque/speed, quantity, and destination for faster RFQ response.

WhatsApp

+86 18857971991

Open WhatsApp

Direct technical discussion with our engineering team.