INDUSTRY COMPONENT

Wheel Bearing

A precision bearing assembly that enables smooth rotation of wheels while supporting vehicle weight and handling loads.

Component Specifications

Definition
A wheel bearing is a critical automotive component consisting of high-precision steel balls or rollers housed within inner and outer races, designed to reduce friction between the wheel hub and axle. It supports radial and axial loads from vehicle weight, cornering forces, and road irregularities while maintaining precise wheel alignment and rotation. Modern wheel bearings are typically sealed, pre-lubricated units that integrate with ABS sensors and require no maintenance during service life.
Working Principle
Wheel bearings operate on rolling-element bearing principles, where hardened steel balls or tapered rollers rotate between inner and outer races to convert sliding friction into rolling friction. This minimizes rotational resistance while distributing vehicle loads evenly across bearing surfaces. The bearing assembly maintains precise clearances through controlled preload, ensuring smooth wheel rotation without excessive play that could compromise handling or safety.
Materials
High-carbon chromium steel (AISI 52100/SUJ2) for races and rolling elements; hardened to 58-64 HRC. Seals made from nitrile rubber or fluoroelastomer. Grease: lithium complex or polyurea-based with extreme pressure additives. Hub material: forged medium-carbon steel or ductile iron.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Preload5-20 N·m axial preload
MountingPress-fit or bolt-on hub assembly
Seal TypeDouble-lipped contact seals
Bearing TypeAngular contact ball bearing or tapered roller bearing
Speed RatingUp to 2,500 rpm
Load CapacityDynamic: 15-45 kN, Static: 25-75 kN
Operating Temperature-40°C to +120°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
ISO 15:2011, ISO 492:2014, DIN 625-1, DIN 5412

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Catastrophic wheel detachment if completely failed
  • Loss of vehicle control during failure
  • ABS/Traction control system malfunction
  • Accelerated tire wear from misalignment
FMEA Triads
Trigger: Contamination from damaged seals
Failure: Bearing pitting and spalling
Mitigation: Use proper seal materials for operating environment; ensure correct installation without seal damage
Trigger: Improper installation preload
Failure: Excessive heat generation and premature wear
Mitigation: Follow manufacturer torque specifications precisely; use calibrated torque wrenches
Trigger: Impact damage from road hazards
Failure: Raceway brinelling and vibration
Mitigation: Design with adequate impact resistance; avoid potholes and curbs during operation

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
ABEC-1 or ISO P0 standard for automotive applications; runout tolerance typically <0.05mm
Test Method
Vibration analysis (ISO 15242), torque rotation testing, salt spray corrosion testing (ASTM B117), endurance testing under simulated load conditions

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Wheel Bearing

12 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

BOC Autoparts
Ningbo, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Wheel Bearing”
View source page ↗ bocautoparts.com · checked 2026-09-14
Guangzhou first Jun Technology Co., Ltd.
Guangzhou, Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Wheel Bearing”
View source page ↗ cowtotal.com · checked 2026-09-16
Hangzhou FleetPro Truck Parts Co. Ltd
Hangzhou, Zhejiang, CN
Also makes: Brake System, Brake Lining, Brake Shoe and 1 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “WHEEL BEARING”
View source page ↗ hzfleetpro.com · checked 2026-09-15
Huzhou Nanxun Guan's Plastic Industry Co., Ltd.
Huzhou, Zhejiang, CN
Also makes: Bearing/Housing
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Skate Wheel Bearing”
View source page ↗ guanshiplastic.com · checked 2026-09-04
Liaocheng Xinlu Shaft Bearing Technology Co., Ltd.
Liaocheng, Shandong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Tapered Wheel Bearings”
View source page ↗ xinlubearing.com · checked 2026-09-04
Maanshan Kingrail Technology Co.,ltd
Anhui, CN
Also makes: Track Rail, Brake beam, Slack adjuster and 3 more
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Railcar Wheel Bearings”
View source page ↗ kingrailparts.com · checked 2026-09-14
PRORUN
Hangzhou, Zhejiang, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “WHEEL BEARING”
View source page ↗ prorun-bearing.com · checked 2026-09-10
Shanghai Trans-Power
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Wheel Bearing”
View source page ↗ tp-sh.com · checked 2026-09-01
Starwex
Ningbo, Zhejiang, CN
Also makes: Release Bearing
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Wheel bearings”
View source page ↗ starwex.com · checked 2026-09-14
TENGXIAO Bearings
Jinan, Shandong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Wheel Bearing”
View source page ↗ jntxgroup.com · checked 2026-09-05
VAFEM (Shang Hai) Bearing Technology Co.,Ltd.
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Wheel bearing kits”
View source page ↗ vafem.com · checked 2026-09-04
Wuxi FSK Transmission Bearing Co., Ltd
Wuxi, Jiangsu, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “Truck Wheel Bearings”
View source page ↗ tapered-rollerbearing.com · checked 2026-09-17

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Share this page

Related Components

Synchronizers
Synchronizers are precision components in manual transmissions that enable smooth gear shifting by equalizing rotational speeds between gears and shafts.
Brake Disc (Rotor)
A rotating disc in disc brake systems that creates friction with brake pads to slow or stop vehicle motion.
Main Bearing Journals
Main bearing journals are precision-machined cylindrical surfaces on a crankshaft that rotate within main bearings to support rotational motion in internal combustion engines.
Surround
Structural component that encloses and protects suspension system elements while providing mounting points and structural integrity.

Frequently Asked Questions

What are the signs of a failing wheel bearing?

Common symptoms include humming or grinding noises that increase with speed, wheel vibration, uneven tire wear, ABS warning lights, and steering wheel play.

How long do wheel bearings typically last?

Modern sealed wheel bearings generally last 150,000-250,000 km under normal driving conditions, but lifespan can be reduced by poor road conditions, impacts, or improper installation.

Can wheel bearings be repaired or must they be replaced?

Most contemporary wheel bearings are sealed, non-serviceable units that require complete replacement when worn or damaged. Attempting to repair sealed bearings compromises lubrication integrity and safety.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Request Manufacturing Insight for Wheel Bearing

Thank you. Your request has been sent. We'll respond within 1–3 business days.
Sorry, we couldn't send your message. Please try again, or email us at [email protected].
Ventilation Openings Worm gear
Get QuotesChat