Import Bearing Balls — Buy in wholesale FOB from Supplier in China

Hebei Gangxin Technology Co., Ltd supplies chrome steel bearing balls manufactured from AISI 52100 (GCr15) material, with a hardness range of 60HRC to 66HRC. The metric size range spans 0.4mm to 100mm, while inch sizes run from 1/64 inch to 4 inches. Grades available include G5, G10, G16, G20, G24, G28, G40 and G60, covering applications from ultra-precise instrumentation through to general industrial bearings. Surface finish options comprise electroplating, painting and polishing, selected according to corrosion resistance requirements and operating environment.

The AISI 52100 alloy, also designated GCr15 in Chinese standards, is a through-hardening chromium steel containing approximately 1.3% to 1.6% chromium and 0.95% to 1.1% carbon. This composition delivers the hardness, wear resistance and fatigue life demanded by rolling contact applications. Typical microstructure after heat treatment consists of fine tempered martensite with dispersed carbides, giving the 60-66 HRC hardness window stated. The G-grade system (G5 through G60) governs dimensional tolerance, sphericity and surface finish, with lower G-numbers indicating tighter control. For context, G5 balls deviate less than 0.005 micrometres from nominal diameter, while G60 permits up to 0.25 micrometres, a standard industry range that buyers should match to their bearing precision class.

These bearing balls serve automotive drivetrain and wheel bearings, aerospace control systems, linear slide rails, casters and general hardware requiring hardness and dimensional precision. Industrial buyers include OEM bearing manufacturers, aftermarket automotive suppliers and machinery rebuilders. The supplier's location in Shijiazhuang, Hebei Province, places it within China's northern industrial corridor with established steel processing infrastructure. Response rate data shows 0.00% with zero average response hours, so buyers should anticipate delays and plan communication accordingly. Surface treatment selection should be discussed directly with the supplier to confirm coating thickness, adhesion testing and salt-spray performance for corrosive environments.

Hebei Gangxin Technology Co., Ltd is located at C-7 Rundushenghe Plaza, Qilian Street, Shijiazhuang, Hebei Province, 050600, China. The company operates under a Harbour trust tier classification. Response metrics indicate a 0.00% response rate with zero recorded average response hours, which suggests the profile may be passively maintained or that communication channels require direct follow-up rather than platform messaging. No verified trade data, certification listings or transaction history is present in the available profile information.

The listing focuses on chrome steel bearing balls across a broad size and grade spectrum, positioning the supplier as a source for both precision and general industrial applications. Buyers should note that no factory audit details, ISO certification numbers, or specific quality control documentation references are provided in the source data. The supplier's address places it in Shijiazhuang, a city with established metallurgical and machinery manufacturing supply chains, though this geographic context should not substitute for direct supplier verification. Prospective buyers are advised to request material certificates, hardness test reports and dimensional inspection records before committing to volume orders.