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THE BEARINGINDEX DIRECTORY

Sihai

Manufacturer profile · product scope, documented models and source records.

BI-105 / China

Deep groove bearings for motors and automotive use

Cixi Sihai develops and manufactures deep groove ball bearings. Its published scope gives a bore range of 6–35 mm and lists 6000, 6200, 6300, 6800 and 6900 series. Applications include vehicles, appliances, power tools, instruments and office equipment. Automotive engine-related references should be matched to the exact assembly. 85 documented model records are available below.

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COMPANY RECORD

慈溪市四海轴承有限公司

Ningbo, Zhejiang, China

Research date · 2026-09-24
Account · Not claimed

Account approval and product evidence are reviewed separately. A directory listing is not an independent factory audit.

Published product focus.

Company-level scope
AutomotiveSliding bearingsDeep groove ball

Explore the product range.

Sihai · published scope
  • 6000, 6200 and 6300 series
  • 6800 and 6900 series
  • Automotive engine-bearing applications

Product families describe the manufacturer’s published scope. Exact dimensions, materials, availability and performance require a model-specific drawing and confirmation.

Applications described by the manufacturer.

  • Automotive systems
  • Household appliances
  • Power tools
  • Office equipment
PREPARE YOUR INQUIRY

A useful brief for Sihai.

Describe the assembly and operating conditions so the proposed bearing can be assessed against your requirements.

  • Provide the bushing or shell drawing, mating-shaft material and surface finish, and the installed clearance.
  • State contact load, sliding speed, temperature and whether motion is continuous, oscillating or intermittent.
  • Specify the lubrication method, material pairing and any wear or chemical-exposure limits.
  • Identify the required quantity, sample-approval process and inspection documents for Sihai.

For qualification, request current drawings, material identification and applicable inspection records. No material report or independent factory audit is implied by this listing.

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Documented models.

85 model records
Model / bearing familyManufacturerBore dOutside DWidth B / T / LDetails

Evidence, with boundaries.

Our review approach →

Sihai published product scope reviewed

The manufacturer website describes deep groove bearings for motors and automotive use.

Scope: Official website product scope only. No independent factory audit, material-report review or model-level performance validation is implied.

Company-level record; not a model test report · 2026-09-24 04:20:34

Source documentation retained for editorial review.