Flexible Gear for Robotic Reducer | Harmonic Drive Flexspline

Precision Machining: High-Precision Flexible Gear Ring, Core Component of Harmonic Drive, Precision Electrochemical Machining, Robot Reducer Flexspline

Product Introduction

Our Robot Reducer Flexspline is a key core component of harmonic reducers, which achieves high reduction ratio, zero backlash and high-precision transmission through meshing with the circular spline via controlled elastic deformation.

The product is manufactured by the precision electrochemical machining (PECM) process, which ensures ultra-high precision and superior surface finish of complex tooth profiles, making it particularly suitable for robot joints, precision servo systems and aerospace transmission devices.

Core Advantages

Superior Service Life & High Strength

High-performance alloy steel (40CrA, 35NCD16) paired with proprietary heat treatment process

Fatigue life increased by more than 30%, enabling stable operation for over 20 million cycles

Ultra-High Tooth Profile Precision

Combination of electrochemical forming and precision gear grinding, with tooth profile error ≤ 0.005 mm

Achieves zero-backlash meshing and smooth transmission (≤ 10 arc-sec)

Surface Quality & Low Wear

Tooth surface roughness Ra ≤ 0.1 μm, significantly reducing friction and noise

Optional PVD coating and shot peening reinforcement for enhanced wear resistance life

Precision Deformation Control

Optimized cup wall thickness and structural stiffness design to suppress high-speed distortion

Each product undergoes dynamic deformation and modal testing to ensure reliability

Customization & Integration Capabilities

Supports flange-type, spline-type, internal thread and other interface forms

Can be pre-assembled with wave generators for delivery, simplifying customers' assembly processes

Technical parameters (typical values)

Item	Parameter
Number of Teeth Range	100-200
Accuracy Grade	DIN 3
Hardness	HRC 48-52
Fatigue Life	10⁶ Cycles
Backlash	10 arc-sec
Dynamic Balance Grade	G1.0

Application Fields

Industrial robots and collaborative robots
Precision servo actuators
Aerospace micro transmission devices
Medical and testing equipment

Manufacturing Advantages: Precision Electrochemical Machining Process

No tool wear and no heat-affected zone
Capable of machining complex tooth profiles and thin-walled structures
No microcracks on the surface and extremely high dimensional consistency
Especially suitable for the machining of high-precision flexspline gear rings

Customization Capabilities

Custom manufacturing of Flex Spline based on customer-supplied drawings, 3D models, or physical samples.
Configurable cup-shaped structure, wall thickness, tooth profile, bottom hole, mounting flange, and connection holes.
Structural dimensions can be adjusted to meet the fit-up requirements of the wave generator, circular spline, bearings, and harmonic reducer assembly.
Critical dimensions, mating surfaces, and mounting datums can be controlled according to the customer drawing.
The machining plan can be developed based on material, heat treatment, surface treatment, and batch quantity requirements.

Quality Control

Production is carried out in accordance with quality management system requirements such as ISO 9001, AS9100, and IATF 16949, with key inspection items covering tooth profile accuracy, wall thickness, roundness, bore dimensions, coaxiality, surface roughness, and visual defects.

Frequently Asked Questions

What information is required to quote a custom Flex Spline?

Please provide drawings, 3D models, material requirements, surface treatment requirements, quantity, accuracy requirements, and application scenario. If physical samples are available, they can also be supplied for structure and process evaluation.

Can samples be made first for validation?

Yes. We support sample development and small-batch trial production. Customers can complete dimensional confirmation, assembly testing, and fit validation before moving into subsequent batch production.

What is the typical sample development lead time?

The sample development lead time is typically 7-45 working days. The exact schedule will be confirmed based on the structural complexity of the flex spline, material, machining process, heat treatment, and surface treatment requirements.

What is the Minimum Order Quantity (MOQ)?

The standard MOQ is 10 pcs. It can also be discussed flexibly based on sample testing, small-batch trial production, or the planned follow-up batch order.

Do you support the process from small-batch trial production to batch production?

Yes. We can support sample development, small-batch validation, and batch production according to the customer project schedule, while maintaining consistent machining standards and dimensional consistency for repeat orders.

Hot Tags: flex spline, China flex spline manufacturers, suppliers, factory, Robot Reducer Hollow Shaft, Circular Spline, Output Bearing, Flex Spline, Wave Generator Bearing, harmonic drive components