Product Introduction

The 31311 / 27311EK Tapered Roller Bearing is a high-quality axle component developed for SINOTRUK heavy-duty truck spare parts applications. Designed for demanding commercial vehicle operations, this bearing provides reliable support for rotating axle components by handling combined radial and axial loads during heavy transportation, construction, and logistics applications.

Manufactured according to OEM standard quality requirements, the tapered roller bearing features precision-engineered rollers, raceways, and durable bearing steel construction. The tapered roller structure allows efficient load distribution, reducing friction, improving rotation stability, and increasing resistance to wear under high-load operating conditions. The standard 31311 bearing dimensions are commonly identified as 55 mm inner diameter × 120 mm outer diameter × 31.5 mm width.

The 31311 / 27311EK bearing is widely used in SINOTRUK truck axle systems, wheel hub assemblies, and other heavy-duty drivetrain applications. It helps maintain axle alignment, improve vehicle stability, and reduce maintenance frequency during long-distance transportation and heavy-load operations.

As an aftermarket replacement part, this bearing is suitable for truck repair workshops, fleet maintenance companies, axle specialists, and wholesale spare parts suppliers. It offers reliable performance, direct replacement compatibility, and long service life for heavy-duty truck maintenance requirements.

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