

Shanghai Ronjee Machinery Co.,Ltd.
Your Reliable Partner For Custom Precision Transmission Components
We specialize in custom gears, custom gear shafts manufacturing and gear reverse engineering from samples. With years of in-depth experience in the mechanical transmission industry, we professionally support gearbox, reducer and all kinds of industrial transmission shaft and mechanical transmission component demands.
Relying on mature and high-quality manufacturing supply chains, we integrate process R&D, solution design, production control and full-range quality inspection. We provide one-stop solutions including non-standard gear customization, precision gear shaft machining, and reverse engineering based on customers’ drawings, technical parameters or physical samples.
Focusing on professional technology and strict process standards, we fully control product precision and hardness, supplying CNC machined gear, custom spline shaft and highly matched reliable reducer gear parts customization and bulk supply for global clients.
Our Advantages

Technical Support
Professional engineering team provides reverse engineering, custom gears & gear shafts, and optimized transmission solutions for gearboxes and reducers based on your drawings, parameters or samples.

Strict Supply Chain & Process Control
We select qualified premium gear manufacturers with unified process and quality standards. We monitor the whole production process and control quality in advance, not a simple trading middleman.

Full Quality Control
Complete inspection system covers raw material, heat treatment, machining and final dimension & hardness test. Inspection and material reports are available to ensure long heavy-duty service life.

Flexible Customization
We support sample reverse development, small batch trial and mass production. Various non-standard, large-module and special gear shafts are available for customized orders.

One-Stop Export Service
We provide professional English technical documents, full set of customs papers and customized packaging. One-stop service from solution confirmation, order follow-up, inspection to shipment.
Quality control system

We implement a full-process quality control system for gears. Strict inspection covers raw material selection, process review, production monitoring, precision dimension, hardness and geometric tolerance testing.
All custom gears, gear shafts and worm gears follow unified standards. Complete test and material reports are available to ensure stable precision and durability for gearbox , reducer and all kinds of mechanical transmission applications.
Customized service capabilities
Custom Gear & Shaft Service We support drawing customization and sample reverse engineering for non-standard gears and shafts.Features: high precision,low noise, , stable operation, wear resistance, long service life and high reliability.
Customized solution for special working conditions, strict quality control and fast delivery. Available for prototype trial and mass production, leading industry position in precision craftsmanship and overall quality.

Market and export experience

We are a professional manufacturer of precision gears and shafts, with rich global export experience.
We specialize in custom design, drawing production and sample reverse engineering, adhering to international quality standards.
We deliver stable quality, competitive pricing and on-time delivery, committed to being your reliable long-term cooperative partner.










