FAG QJ210 MPA 50x90x20 mm Four-Point Contact Bearing

Applications in Industrial Systems

The FAG QJ210‑MPA 50x90x20 bearing is engineered for demanding industrial applications where a compact yet robust solution is required. With a bore diameter of 50 mm, an outer diameter of 90 mm, and a width of 20 mm, this four-point contact ball bearing is ideal for machine tools, gearboxes, large-shaft drive systems, bearing housing units and other industrial drive components. It supports both radial and axial loads, making it suitable for high-speed, high-precision operations in manufacturing, material-handling and heavy machinery sectors.

Advantages & Technical Features

• The four-point contact design allows a single bearing to handle axial loads in both directions as well as radial loads — reducing the need for multiple bearings in complex mounting arrangements.

• The “MPA” designation signifies a machined brass cage guided on the outer ring, enhancing load distribution, lowering friction and improving performance under challenging conditions.

• With dimensions of 50x90x20 mm, the bearing fits compact assemblies and bearing housings — a major advantage when space and weight are constrained but high durability is essential.

• Designed as a unit in a bearing housing or as part of a bearing assembly in industrial applications, it supports high durability, long service life and reliable shaft guidance under combined loads.

• Identified using key B2B search phrases such as “four-point contact bearing”, “industrial bearing unit”, “high durability bearing”, “bearing housing” and “ball bearing 50x90x20”, it is crafted to match procurement search intents and support high rankings in search engines.

Technical Specifications Summary

• Brand: FAG

• Model: QJ210 MPA

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

• Bore diameter (d): 50 mm

• Outer diameter (D): 90 mm

• Width (B): 20 mm

• Cage: Brass, machined (MPA)

• Clearances: Standard (or as specified by variant)

• Design: Combines axial and radial load capacity in one bearing

• Applications: Bearing housing units, machine drives, gearboxes, heavy-duty equipment

• Advantage: High durability, compact width, simplified bearing unit installation

This bearing is developed for mechanical and industrial engineers looking for a reliable bearing unit to integrate into a bearing housing or drive system, where “high durability”, “industrial applications” and “bearing housing unit” are critical search themes.

FAQ

Q1: What distinguishes a four-point contact bearing from a regular ball bearing?
A: A four-point contact bearing is engineered to support axial loads in both directions plus radial loads in a single unit. Standard ball bearings typically handle radial loads and one-direction axial loads, making them less suited for combined or reversing load conditions.

Q2: What does the “MPA” suffix mean in the model QJ210 MPA?
A: The “MPA” suffix indicates a machined brass cage guided on the outer ring, which improves mechanical stability, reduces friction and enhances thermal behaviour under industrial load and speed conditions.

Q3: How do I select the correct bearing unit for my bearing housing or drive system?
A: Check the shaft diameter (here 50 mm), the housing bore or outer diameter (90 mm), and available width (20 mm). Also evaluate load types (radial vs axial), speed, required lifetime and mounting conditions. The QJ210 MPA bearing meets these criteria for compact yet durable industrial sets.

Q4: Is the QJ210 MPA suitable for industrial drive applications with high demands?
A: Yes — its four-point contact design, brass cage and dimensions make it optimal for bearing housings, machine drive systems, large-shaft assemblies and any application requiring a bearing unit of “high durability”.

Q5: What benefits does a B2B customer gain with this bearing?
A: A B2B buyer benefits from longer equipment life, fewer replacements, simplified mounting (one bearing unit instead of multiple), reduced downtime and faster integration. Combined with rapid availability and clear specifications, it supports efficient procurement and maintenance decisions.