FAG QJ312‑MPA Angular Contact Ball Bearing 60x130x31 mm

Applications in Industrial Systems

The FAG QJ312‑MPA 60x130x31 mm Bearing is designed as a high-performance bearing unit tailored for demanding industrial environments. With a bore diameter of 60 mm, outer diameter of 130 mm and a width of 31 mm, this four-point contact ball bearing suits applications where compact space, high durability and combined axial and radial load capacity are required. Typical uses include heavy-duty drive shafts, gearboxes, bearing housings, machine tool spindles and other industrial drive systems. It provides a reliable solution for clients seeking an industrial bearing unit that delivers both precision and endurance.

Key Advantages & Technical Features

• The four-point contact design allows the bearing to carry axial loads in both directions as well as radial loads — eliminating the need for multiple bearings in many applications.

• The suffix “MPA” identifies a solid brass cage guided by the outer ring, enhancing both stability and thermal performance — contributing to high durability and long life in industrial operations.

• The dimensions 60x130x31 mm ensure compatibility with bearing housings and units where space and weight are critical factors.

• The bearing supports phrases such as «high durability», «industrial applications», «bearing unit», «bearing housing» and «ball bearing», aligning strongly with the search terms used by procurement professionals and engineers.

• Constructed for industrial use: the bearing supports high load capacities, maintains performance under continuous operation, and simplifies assembly in bearing housings or drive units.

Technical Specification Summary

• Manufacturer: FAG

• Model: QJ312-MPA

• Type: Four-point contact ball bearing (angular contact variant)

• Bore (d): 60 mm

• Outer diameter (D): 130 mm

• Width (B): 31 mm

• Cage: Brass (solid) guided on outer ring

• Suitable for application in bearing housings and industrial bearing units requiring combined axial & radial load handling, compact width and high durability.

• Stock & delivery: Warehouse in Lublin, ul. Smoluchowskiego 1, building 4 — 24 h dispatch available.

This bearing is aimed at B2B customers who require a reliable, high-specification unit for industrial drives, bearing housing assemblies and heavy machinery where both performance and robustness matter.

FAQ

Q1: What is a four-point contact bearing, and when should I use it?
A: A four-point contact bearing is designed to accept axial loads in both directions and radial loads within a single bearing unit. It is ideal for applications with alternating axial forces or where compact width and high load capacity are required, unlike standard radial bearings which typically are limited in one direction of axial load.

Q2: What does the “MPA” suffix mean in this model?
A: The suffix “MPA” indicates that the bearing features a solid brass cage that is guided on the outer ring. This construction enhances durability, heat dissipation and helps maintain stability under load, making it well-suited for industrial usage with high demands.

Q3: How do I select the correct bearing size for a bearing housing or drive unit?
A: You should match the shaft diameter (bore: 60 mm here), the housing bore (outer diameter: 130 mm) and the axial width available (31 mm). In addition, you should consider load types (radial, axial or combined), speed of operation, and the environmental conditions (temperature, contamination). The QJ312-MPA is chosen when combined loads and industrial durability are required.

Q4: Is this bearing suitable for installation in bearing housings and industrial drive units?
A: Yes. This bearing is engineered as a bearing unit (or part of a bearing housing) for industrial drives, large shafts, heavy gearboxes and similar assemblies requiring high durability, compact width and reliability.

Q5: What are the benefits for a B2B buyer choosing this bearing?
A: A B2B buyer gains from long operational life, fewer replacements, simplified assembly, reliable performance under demanding conditions and faster delivery — especially when stocked and shipped from a warehouse with 24 h dispatch.