Precision CNC Machined Components & Gear Shafts for Global Industry

We don’t aim to be just another supplier.We aim to be the partner you can rely on when the drawing is complex, the tolerance is tight, and the deadline matters.

For over two decades, RJ Factory has been a trusted partner for precision manufacturing solutions, delivering exceptional quality and reliability to industries worldwide.

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Two Engineering Specialties. One Reliable Manufacturing Partner.

Custom machined spline shaft for power transmission - RJ Factory

Drive Components

Precision Gears
Gear Shafts
Splined Shafts

Fluid Connectors

Stainless Steel Fittings
Manifold Blocks Fittings

Precision Drive Components

Explore Drive Solutions

Fluid Connection Components

Explore Fluid Solutions

Technical Library

Access our comprehensive engineering resources, case study guides, and manufacturing insights.

Case Studies

Root cause analysis and prevention strategies

Engineering Guides

Design best practices and specifications

Material Selection

Choosing the right materials for your application

Manufacturing Insights

Process optimization and quality control

Engineering Review →

Company Values

Precision First

DIN 5-level tooth accuracy, surface roughness Ra≤0.8.

Technology & Knowledge Driven

From materials science to processing technology, sharing in-depth knowledge through a technical library.

Collaborative Customization

Upload drawings and get a free process evaluation; full transparency from prototype to mass production.

Stability & Reliability

High torque, leak-proof, high-pressure resistant, products operate stably over long periods under harsh conditions.

Rigorous Quality Standards

ISO-certified manufacturing processes with rigorous quality control at every stage.

CMM Precision Inspection
Strict Tolerance Control
Full Traceability Documents
On-Time Delivery Guarantee

Ready to start your project ?

Upload your technical drawings and specifications. Our engineering team will review your requirements and provide a detailed quote