UMZ Metric Tapered Roller Bearings

1. Product Overview

UMZ metric tapered roller bearings are designed and manufactured in accordance with ISO standards. With tapered raceways on both the inner and outer rings, these bearings can carry combined loads (radial and single-direction axial loads). Their separable design allows the cone assembly (inner ring, rollers, and cage) and the cup (outer ring) to be mounted independently, ensuring convenient installation and adjustment.

2. Design Features

Adjustable contact angle  

preload and clearance can be adjusted to optimize stiffness and bearing life.

High load capacity  

long rollers with large contact areas provide excellent performance under heavy loads.

Low friction operation  

precision-ground raceways and roller ends reduce heat and wear.

Global interchangeability  

fully compliant with international metric standards, ensuring compatibility with major global brands.

3. Common Metric Series

UMZ offers a wide range of metric tapered roller bearings to meet diverse applications:

30000 Series  

lightweight design, ideal for automotive transmissions and small machinery.

31000 Series  

higher load capacity, widely used in trucks and tractors.

32000 Series  

versatile series, suitable for automotive wheel hubs and construction equipment.

33000 Series  

extra capacity for heavy-duty machinery and industrial gearboxes.

33100 / 33200 Series  

larger contact angle, optimized for higher axial loads.

4. Applications

Automotive: wheel hubs, transmissions, differentials, and driveline systems.

Industrial machinery: gearboxes, reducers, pumps, compressors.

Construction & mining equipment: crushers, conveyors, cranes.

Heavy-duty industries: steel mills, port machinery, wind turbines.

5. Quality & Standards

Material: premium GCr15 (100Cr6) high carbon chromium bearing steel.

Heat treatment: advanced vacuum hardening for durability and wear resistance.

Precision grades: ISO 492 standards, available in P0, P6, and P5.

Certifications: UMZ production facilities are certified to ISO 9001 and IATF 16949, ensuring global automotive and industrial quality compliance.

6. UMZ Advantages

Complete range of metric tapered roller bearings for automotive and industrial needs.

Precision engineering for low noise, high reliability, and long service life.

OEM/ODM support, customized solutions available.

Strong export experience: UMZ bearings are trusted in over 60 countries worldwide.