FAG QJ314-MA 70x150x35 mm Four-Point Contact Bearing

Applications in Industrial Systems

The FAG QJ314‑MA 70x150x35 bearing is engineered for demanding industrial applications where combined radial and axial loads must be handled within limited axial space. With bore size 70 mm, outside diameter 150 mm and width 35 mm, this four-point contact ball bearing is ideal for heavy-duty machinery, gearbox units, bearing housings and large rotating shafts. It functions effectively in units where a robust bearing unit (bearing housing / bearing assembly) is required to maintain high durability, precision and uptime.

Key Advantages & Technical Design Features

• Four-point contact design allows the bearing to carry axial loads in both directions plus radial loads — enabling a single bearing to replace multiple assemblies.

• The “MA” designation indicates a machined brass cage and centred outer ring, offering reduced friction, enhanced durability and improved thermal behaviour—critical for industrial applications.

• Dimensions 70x150x35 mm match common shaft and housing standards in heavy equipment, facilitating fit into bearing housings and supporting the phrase “bearing unit”.

• High load ratings: dynamic and static values consistent with this class of four-point bearings ensure long service life under industrial stresses.

• Suitable for industrial applications: phrases like “high durability”, “industrial applications”, “bearing housing”, “bearing unit”, “ball bearing” align naturally with this product’s position in the market.

Technical Specifications Summary

• Manufacturer: FAG

• Model: QJ314-MA

• Type: Four-point contact ball bearing

• Inner diameter (d): 70 mm

• Outer diameter (D): 150 mm

• Width (B): 35 mm

• Cage: Brass (machined)

• Clearances: Standard internal clearance (“CN” or equivalent)

• Designed for use in bearing housings, heavy drive units and bearing assemblies in industrial machinery

• Stock location: Warehouse & Store in Lublin with 24h dispatch

This bearing serves procurement and engineering teams seeking a high-performance, single bearing solution for large-shaft applications, where space, precision and longevity are critical.

FAQ

Q1: What distinguishes a four-point contact bearing from a standard ball bearing?
A: A four-point contact bearing enables one bearing unit to carry both radial loads and axial loads in both directions simultaneously. Standard ball bearings typically handle radial loads and, in some cases, unidirectional axial loads only.

Q2: What does “MA” mean in the model designation?
A: The suffix “MA” indicates that the bearing includes a machined brass cage and that the outer ring is centrally guided. This enhances the bearing’s durability, performance under load and heat dissipation capacity.

Q3: How should I check fitment in a bearing housing?
A: Ensure the shaft matches the inner diameter (70 mm), the housing bore fits the outer diameter (150 mm) and that the axial width available accommodates 35 mm. Confirm the mounting method suits a bearing unit design and that bearing housing supports secure fixation.

Q4: Is this bearing suitable for industrial drive and gearbox applications?
A: Yes. The QJ314-MA is specifically designed for heavy-duty industrial environments including gearbox housings, large shafts and rotating assemblies where combined load capacity and high durability are required.

Q5: What are the benefits of using this bearing for a B2B client?
A: For industrial clients it offers reduced downtime, fewer spare parts (since one bearing covers combined loads), simplified mounting in bearing housings, and long-term durability. Availability from a warehouse with 24h dispatch further supports operational continuity.