Import Ball & Roller Bearing — Buy in wholesale FOB from Supplier in China

Ball and roller bearings from Shangdong Tongli Bearing Co., Ltd are manufactured in Linqing, Shandong Province, China, from chromium steel GCr15 and stainless steel 440C. These materials provide hardened raceway surfaces with typical through-hardness of 58-64 HRC for GCr15 after austenitizing and quenching, suitable for moderate to heavy radial and axial loads. The product line includes both ball bearings for combined load applications and roller bearings for higher radial capacity. The source cites design to ISO and ABEC precision standards, though specific tolerance class and dimensional series are not itemised.

GCr15 chromium steel contains approximately 1.30-1.65% chromium with 0.95-1.05% carbon, offering a balance of hardness, wear resistance, and fatigue life that has become the benchmark material for general industrial bearings. Stainless steel 440C provides corrosion resistance for food processing, marine, or chemical exposure environments, though at reduced load capacity compared to GCr15. Heat treatment protocols, retained austenite limits, and dimensional stability after tempering are not specified in the source and should be requested from the supplier. Cage materials, seal configurations, and lubricant fill are additional variables affecting service life in specific operating conditions.

Primary application sectors cited include automotive drivetrain and chassis components, industrial machinery such as motors and gearboxes, pumps, and agricultural equipment. The contact angle, radial internal clearance, and cage design must be matched to each application. Shandong Province houses a significant bearing industry cluster centred on Linqing, with established supply chains for steel tube, forging, and heat treatment services. Buyers should confirm with Shangdong Tongli Bearing Co., Ltd the specific bearing series, dimensional ranges, and whether custom designs or modified internal clearance are supported.

Shangdong Tongli Bearing Co., Ltd is located at No. 261, Yandian Industrial Zone, Linqing, Shandong Province, postal code 252665, China. The supplier holds Harbour trust tier status with a 0.00% response rate and zero recorded average response hours. This profile suggests limited or no recent engagement through the platform's messaging system, and buyers should establish direct contact channels before relying on the listing for time-sensitive procurement. No information on factory size, annual output, number of employees, or years in operation is present in the source data.

The company manufactures ball and roller bearings for B2B export markets, with stated applications in automotive, industrial machinery, pumps, and agricultural equipment. The source description references ISO and ABEC standards, though no certification body or certificate number is provided. The Linqing location places the supplier within one of China's bearing industry concentrations, with access to regional steel suppliers and heat treatment subcontractors. Buyers should request ISO 9001 certification, IATF 16949 if automotive supply is intended, and sample inspection reports including dimensional, hardness, and metallographic verification. No client list, revenue figure, or export history is stated and should not be assumed.