Import Ball Mill Bearing — Buy in wholesale FOB from Supplier in China

Ball mill bearings from Chaoyang Runxing Heavy Machinery Bearing Factory are heavy-duty rolling element bearings designed to support rotating drums in mineral processing and cement grinding operations. These bearings must accommodate combined radial loads from grinding media and material charge, plus axial loads from mill inclination and thermal expansion. The factory manufactures and repairs babbitted bearings, also supplying retread services for worn bearing assemblies based on customer drawings. Material specification is bearing grade chrome steel (GCr15/SUJ2), with babbitt lining typical for the sliding bearing variants used in large mill applications.

GCr15 (Chinese grade, equivalent to AISI 52100 and SUJ2) is a high-carbon chromium bearing steel with typical composition of 1.0% carbon, 1.5% chromium, balance iron. This material provides nominal hardness of 60-65 HRC after quenching and tempering, with excellent wear resistance and fatigue life under high contact stress. For babbitt-lined bearings, the typical lining alloy is tin-based Babbitt (ASTM B23 Grade 2, 88% tin, 8% antimony, 4% copper) or lead-based alternatives, applied by centrifugal casting or bonding to steel shells. The bearing design must accommodate shaft diameters ranging from 200 mm to over 1000 mm for industrial ball mills, with specific dimensions produced to customer drawings rather than standard catalogues.

Primary buyers include mining companies, cement producers, power generation facilities and OEMs supplying grinding mill equipment. These bearings operate in continuous 24-hour service with bearing temperatures typically 60-80 degrees Celsius, requiring reliable lubrication systems and condition monitoring. Chaoyang Runxing states over 20 years of production history in babbitt bearings specifically. Buyers should confirm current manufacturing capacity, quality system certification and reference installations before placing orders, as no specific ISO certification, production volume or named client list is provided in the source data.

Chaoyang Runxing Heavy Machinery Bearing Factory is located in Chaoyang City Development Zone, Chaoyang, Liaoning Province, postal code 122000, in China's industrial northeast. The supplier holds a 'harbor' trust tier with a 0.00% response rate and zero average response hours, indicating limited or unmonitored communication activity through the platform. Buyers should initiate direct contact via available channels to confirm current operational status, sales engineering support and typical quotation turnaround times before planning procurement timelines.

The factory specialises in babbitt bearings for heavy mill machinery, with stated experience exceeding 20 years. Their service offering encompasses new bearing manufacture, repair of worn assemblies and retread services based on customer drawings, suggesting capability in reverse engineering and refurbishment. They target domestic and foreign mill machine companies for long-term supply relationships. However, no specific workforce numbers, factory floor area, annual output, ISO quality certification, named client references or financial data are present in the source information. The company invites factory visits, which buyers should consider for due diligence before significant orders.