Mudanjiang Bearing Manufacturing Co., Ltd. (ZMZ) designs and produces precision industrial bearings for automotive, agricultural, and heavy industrial applications. ISO-certified manufacturing. Shipped to 40+ countries.
50+
Years of bearing manufacturing experience
3
Dedicated production facilities
8
Product lines — bearings, castings, stamped parts, friction discs
ISO
Certified quality management system
ZMZ (Mudanjiang Bearing Manufacturing Co., Ltd.) is a vertically integrated precision bearing manufacturer based in Mudanjiang City, Heilongjiang, China. From raw steel forging and heat treatment to precision grinding, assembly, and quality inspection — every ZMZ bearing is produced entirely in-house. Our product range covers deep groove, angular contact, tapered roller, spherical roller, self-aligning, and thrust bearings, plus clutch release bearings, agricultural bearings, and custom machined precision parts for global OEM customers.
Standard-catalog configurations and custom-engineered bearings optimized for heavy machinery, automotive assemblies, and automated industrial systems.
Radial bearings optimized for ultra-high rotational speeds, low noise emission, and minimal power consumption. Featuring advanced sealing matrices to lock out industrial contaminants.
Engineered with linear contact elements rather than point contact to support massive radial forces and high axial directional loads in high-vibration environments.
Tailored physical dimensions, specialized metallurgy, advanced internal clearancing, and high-temp synthetic lubrication manufactured strictly to your custom CAD blueprints.
ZMZ manufactures a comprehensive range of precision bearing products and industrial components for global OEM and aftermarket supply.
Non-standard dimensional profiles, tailored metallurgy, and custom components manufactured exactly to your proprietary CAD design specifications.
Clutch release bearings, wheel hub bearings
Ag bearings, deep groove, tapered roller
Deep groove ball bearings — 6200/6300 series
Tapered roller, spherical roller bearings
Conveyor roller bearings, needle roller
Sealed bearings, precision ground rings
We source premium carbon-chromium steel (GCr15) subjected to rigorous ultrasonic testing. Every production batch undergoes comprehensive dimensional analysis and hardness testing to guarantee uniform fatigue life and exceptional wear resistance.
Manufactured to strict international standards across P0, P6, and P5 precision classes. This ensures seamless drop-in mechanical compatibility, reducing vibration and heat buildup in your final assemblies.
Industrial supply chains cannot afford delay. Our technical estimating team processes complex multi-line bills of materials (BOMs) and custom drawings rapidly, returning complete pricing and logistical timelines within 48 business hours.
| Series Group | Bore Range (d) | Enclosure Formats | Tolerance Class | Material Base |
|---|---|---|---|---|
| 6000, 6200, 6300 Series | 10mm to 120mm | Open, ZZ (Shielded), 2RS (Sealed) | P0 / P6 / P5 | High-Chromium Steel / Stainless Steel |
| 30000, 32000 Tapered Series | 15mm to 200mm | Open (Standard) | P0 / P6 | Premium Case-Hardened Alloy |
This is an abbreviated matrix. ZMZ produces over 1,200 unique dimensional configurations.
Submit an RFQ and our technical sales team will respond within 48 business hours with pricing, specifications, and lead times.
