Air Compressor Bearing — Precision, Durability & Factory Direct Supply

This air compressor bearing is a core rotating component designed for both rotary screw and piston air compressors. Made from high-purity chrome bearing steel (GCr15) through precision grinding and special heat treatment, it is engineered specifically for the high-speed, heavy-load, high-temperature operating conditions of compressor airends. The raceways are super-finished and the internal geometry is optimized to significantly reduce friction, heat buildup and vibration — directly extending the time between major overhauls.

Key Performance Features

In terms of material quality, both the inner/outer rings and rolling elements are made from high-carbon chromium bearing steel with uniform hardness, delivering excellent wear resistance and fatigue strength. The cage is made from high-strength engineering polymer (L-PPS material), which outperforms traditional nylon cages in heat resistance and oil/chemical stability. It performs reliably even when exposed to compressor oil and refrigerants, while generating lower centrifugal force and less noise at high speeds.

For load capacity, the contact angle is optimized for the specific force patterns of screw compressor main shafts, enabling the bearing to handle both radial loads and bidirectional axial thrust simultaneously. The double-row design distributes loads more evenly and prevents early failure caused by localized stress concentration. Precision grades P0, P6 and P5 are available to match the accuracy requirements of different compressor models.

For service life, the combination of optimized raceway curvature, larger ball diameter and improved heat treatment delivers a service life over 40% longer than standard bearings under the same operating conditions. A special surface coating improves lubrication under low-speed variable-frequency drive (VFD) conditions, preventing skidding wear and reducing the risk of unplanned downtime.

For compatibility, this bearing series fits major compressor brands including Atlas Copco, Ingersoll Rand, Fusheng, Jaguar and Kaishan, covering both screw and piston compressor airends. A wide range of standard sizes is in stock, and custom specifications are available upon request.

Why Choose Us

We are a one-stop supplier specializing in air compressor filters and spare parts, with over 10 years of industry experience. We know the airend structures and wear-part compatibility across all major compressor brands. All bearings are sold factory-direct — cutting out middlemen and giving you better pricing at the same quality level. Every batch is inspected for dimensional accuracy, running precision and noise before shipment to ensure high installation pass rates. We back this product with a full one-year warranty: under normal operating conditions, any quality-related issue will be replaced free of charge.

Whether you are an equipment distributor, a service workshop or an end-user factory, we provide stable stock, professional selection support and responsive after-sales service. Contact us for specific model numbers and bulk pricing.