Tapered roller bearings

Description

1. Product Overview
Tapered roller bearings consist of an inner ring, outer ring, tapered rollers, and a cage, designed to manage combined radial and thrust loads. They are primarily used in wheel hubs, gearboxes, conveyor systems, and heavy machinery axles. The key value proposition is reduced frictional torque and higher load-carrying capacity versus spherical or cylindrical roller bearings. Strategically, they are critical for industries requiring reliable rotational performance under variable loads, directly impacting operational uptime and total cost of ownership.

2. Key Specifications & Technical Characteristics

• Material composition: Through-hardened or case-carburized chromium steel (GCr15 / SAE 52100) optional nitriding for extreme conditions

• Hardness: 58–64 HRC on raceways and rollers

• Precision grades: ISO P0 (normal), P6, P5, P4 (high-precision)

• Physical characteristics: Tapered geometry, polished rolling surfaces, cage options (steel, brass, polyamide)

• Packaging options: Anti-rust oil coating + individual plastic wrap + corrugated cartons + export-grade wooden pallets or crates

• Shelf life: 5 years when stored in dry, covered conditions (20±10°C, ≤65% RH)

3. Core Industrial Applications

• Automotive & commercial vehicles: Wheel ends, differentials, transmissions – improved fuel efficiency due to lower drag torque

• Mining & construction: Cone crushers, conveyor pulleys, excavator slew drives – withstands shock loads and contamination

• Wind turbines: Main shafts and gearbox stages – enhances reliability in oscillating load conditions, reducing unplanned downtime

• Rail & heavy machinery: Axle journals and traction motor supports – offers longer relubrication intervals versus plain bearings

4. Competitive Advantages

• Quality consistency: 100% dimensional inspection with CMM and 100% ultrasonic tested raw materials; lot traceability to heat treatment batch

• Supply reliability: 4-week lead time for standard sizes, safety stock maintained in regional hubs (NA, EU, SEA)

• Logistics capability: Containerized shipping with shock-watch labels and export-worthy fumigated pallets

• Cost competitiveness: Direct forging + in-house grinding reduces intermediary markup by 12–18% vs top-tier brands

• Technical support: Full 3D CAD models, installation torque specs, L10 life calculation worksheets, and failure analysis service

5. Commercial & Supply Information

• Minimum order quantity (MOQ): BULK 20MT (mixed sizes permissible)

• Loading capacity: 20MT per 20FT container (standard box); 24–26MT per 40FT HC depending on bearing dimensions and packaging density