Import Ball Mill Ring Gear — Buy in wholesale FOB from Supplier in China

Chaoyang Runxing Heavy Machinery Manufacturing Co., Ltd produces ball mill ring gears (girth gears) as primary torque transmission elements for rotating drum mills in mineral processing, cement, and chemical sectors. The component is a large-diameter ring gear, typically single or double helical, that meshes with a motor-driven pinion to rotate the mill drum at the required critical speed percentage. Material selection, tooth geometry, and heat treatment govern service life under cyclical bending and abrasive wear conditions. The supplier indicates precision engineering to reduce wear rates, though no specific AGMA grade, DIN standard, or hardness values are stated in the source material.

Manufacturing methods for such gears include cast steel blanking followed by rough machining, profile hobbing or milling, and through-hardening or surface induction hardening depending on torque and impact loading. Common materials are ZG35CrMo, ZG42CrMo, or equivalent cast alloy steels with specified carbon, chromium, and molybdenum content for hardenability and temper resistance. Tooth surface hardness typically ranges 250-320 HB for through-hardened gears, or 50-60 HRC for induction-hardened profiles, with case depths of 3-5 mm typical. The supplier notes availability in various sizes without publishing pitch diameters, module ranges, or face width dimensions. Runout tolerance and axial runout after final machining are critical parameters that affect mesh quality and should be specified in the purchase agreement.

Applications span replacement of worn girth gears in existing ball mills, SAG mills, and rod mills, as well as original equipment supply for new grinding lines. End users include copper and gold concentrators, Portland cement clinker grinding plants, and chemical fertilizer pelletizers. The supplier mentions flexible minimum order quantities and manufacturer-direct supply. Specific pricing, exact MOQ figures, delivery schedules, and certification compliance (ISO, CE, or industry-specific) are not detailed in the source and must be confirmed directly with Chaoyang Runxing. Packaging and shipping terms including FOB, CIF, or DAP availability also require direct clarification.

Chaoyang Runxing Heavy Machinery Manufacturing Co., Ltd is based in Dongsanjia Industrial Park, Longcheng District, Chaoyang, Liaoning Province, China. Liaoning has a historical concentration of heavy machinery manufacturing and metallurgical industries, providing foundry and large-scale machining infrastructure. The supplier holds harbor-tier platform status. The response rate is recorded at 0.00 percent with zero average response hours, indicating no recent engagement through platform messaging. Buyers should source direct telephone or email contact through the company's registered records or industry directories to ascertain current sales engineering availability.

The company profile positions itself as a manufacturer-direct supplier of ball mill ring gears with emphasis on cost effectiveness and custom sizing. No founding date, employee count, annual revenue, ISO certification numbers, or named clients are provided in the source material. The product description references compliance with relevant industrial certifications without naming specific standards. Buyers should request a current quality management system certificate, factory audit report, and evidence of past gear deliveries for mills of comparable diameter and power rating to assess manufacturing capability and track record.