TURSTED BY INDUSTURRY LEADERS
Ruizheng Precison Machinery are proud to have supported projects and manufacturing needs for customers and partners across the automotive, industrial automation, robotics, power tools, HVAC, construction equipment, and UAV industries.
Haas · Bosch · Hitachi · MISUMI · Daikin · ABB · JCB · FANUC · KAMAZ · Leapmotor · DEWALT · Midea · KUKA · GMCC · Haozhi · EngineAI · Diamex
Our custom fabricated products
Ruizheng provide CNC machining and customized production services for shaft parts in various industries. Here are the products and services we can customize.

Spindle Part
Spindle Part is the core component used to transmit power and support rotational motion in mechanical equipment. It is widely used in machine tools, lathes, grinders, automobile manufacturing, semiconductor equipment, aerospace and other fields. The precision of Spindle Part produced by our factory can reach 0.002mm, and the concentricity can reach 0.001mm.

Step Shaft
Step Shaft is widely used in many fields and industries such as machinery manufacturing, automobile industry, aerospace, energy industry, electronic equipment, and household appliances.

Valve core and valve body
Valve core and valve body are important parts of valves. They have high precision and reliability and are widely used in air conditioners, household appliances, medical equipment, automobile industry, water supply and drainage systems, and industrial piping systems.

Custom Bearing housing
We equipped with CNC cylindrical grinding machines and automatic measuring instruments for online inspection.We have a temperature-controlled workshop, achieving an accuracy of 0.002mm and a concentricity of 0.001mm.We specialize in mass production of various non-standard bearing housings and provide customized solutions for different industries.

CNC Part
CNC Parts are widely used in many fields and industries such as medical equipment, home appliances, electronics and semiconductors, automotive industry, aerospace, and machinery manufacturing due to their high precision and reliability.

Custom Crankshaft
Custom Crankshaft is a high-performance crankshaft designed and manufactured according to specific needs. It is used in automobiles, motorcycles, ships, aviation, industrial machinery and other fields. Custom Crankshaft has high precision, high strength and durability.
Our Services
- CNC Turning, Milling and Grinding at the same time with constant workshop
- Germany Zeiss CMM(The world’s top testing equipment )
- Customized service performance
- Provide assemble service for One-stop problem solving and saving cost
- 0.002mm highest precision tolerance
- Online video inspection and Escrow-Third party inspection
100% compensation for quality problems all the time





Customer Feedback
Certificate

Custom Eccentric Shafts: How Offset Geometry Is Held on a Lathe and Proven on a Gauge
With an eccentric shaft, misalignment is the entire design intent. The journal or journals sit thrown off to one side, offset from the main axis by a chosen distance while staying parallel to it, so

Connecting Rod Weight Matching: Why Two Rods of the Same Mass Are Not Balanced
Weigh two connecting rods, get them agreeing to a tenth of a gram, and the engine can still run rougher than one built on a heavier set. That sounds like nonsense until you remember what

Custom Shaft Parts for Spring Machines and Industrial Compressors: Where Tolerances Actually Matter
A drawing that puts a tight tolerance on every diameter may look careful, but that approach can backfire. A micron-level callout on a diameter nothing touches gets paid for twice over — the grinding bill

Custom Engine Crankshafts: When a New Part Beats Reconditioning
A worn crankshaft gets one standard response: grind it, fit undersize bearings, run it again. Most of the time that’s money well spent. The shaft is already there. The bill is predictable. Yet the grinder

CNC Custom Parts for Machine Tools: Building Reliable Components for Oilfield, Robotics and Engine Systems
Somewhere inside every expensive machine there is a part nobody thinks about. A drill rig sweating in the desert. A robot arm on hour nine of its shift. An engine that has to survive years

Custom Automotive Connecting Rods: Material, Heat Treatment and Dimensional Control
Few engine parts take more punishment than a connecting rod — and few punish a mistake harder. It turns linear piston motion into rotation. It lives in a spray of oil. Tens of thousands of