Four-Point Contact Bearings (QJ Series) – Global Supply for Industrial Applications

Four-point contact bearings, also known as QJ series angular contact ball bearings, are designed to support high axial loads in both directions while maintaining stable performance at higher speeds. Their unique split inner ring and specially profiled raceways allow a single bearing to handle axial forces that would normally require a pair of angular contact bearings. This makes them an ideal choice for compact designs, precision assemblies, and demanding industrial environments.

Why Four-Point Contact Bearings?

• Axial load capacity in both directions – one bearing replaces a matched pair.
• Space-saving design – ideal for applications with limited installation room.
• High-speed suitability – optimized for rotational accuracy and stability.
• Easy mounting – split inner ring provides installation flexibility.
• Wide range of sizes – QJ2, QJ3, QJ10 series and more.

Typical Applications

Four-point contact bearings are widely used across industries that demand precise positioning and combined loads. Typical applications include:

• Industrial gearboxes
• Electric motors and generators
• Pumps and compressors
• Machine tool spindles
• Construction machinery
• Packaging and automation systems
• Wind turbine components

Available Brands and Configurations

We supply a full range of QJ series four-point contact bearings from leading global manufacturers. Various internal clearances, cage materials, and precision levels (standard to high-precision classes) are available. Both steel and brass cages can be supplied depending on your technical requirements.

Technical Features of QJ Series Bearings

• Contact angle: typically 35° for balanced axial performance
• Split inner ring: enables compensation of thermal expansion and simplifies assembly
• High precision: available in P6, P5, P4 tolerances
• Lubrication options: grease or oil depending on speed and temperature conditions
• Configurations: open or sealed types depending on the application

Global Delivery and Fast Sourcing

Whether you need a common QJ bearing or a rare variant, we can source it quickly from trusted global suppliers. Industrial customers rely on our ability to deliver urgently, including hard-to-find items and discontinued series. Shipments are available worldwide with fast processing times.

Request a Quote

If you are looking for four-point contact bearings for your project or machinery, simply send us the bearing code or technical specification. We will provide pricing, availability, and delivery options for your location. We can supply both single pieces and large industrial quantities.

Get in touch and let us help you find the right QJ series bearing for your application. We ensure reliable sourcing, competitive pricing, and global delivery.