SKF QJ315 N2MA 75x160x37 mm Angular Contact Ball Bearing

Applications in Industrial and Drive Systems

The SKF QJ315 N2MA 75x160x37 bearing is engineered for industrial applications requiring a robust bearing unit capable of handling combined axial and radial loads within a compact axial width. With bore size 75 mm, outer diameter 160 mm and width 37 mm, this angular contact ball bearing is ideal for gearboxes, heavy-duty drives, bearing housings and machine tool spindles where dependable performance, high durability and long service life are essential. It supports both industrial and automotive usage and integrates seamlessly into a bearing housing or obudowa łożyskowa as part of a drive system.

H2: Key Advantages and Technical Design Features

• Four-point contact configuration allows the bearing to carry axial loads in both directions as well as radial loads — reducing the number of components needed in a unit and optimizing space in machine assemblies.

• Designation “N2MA” indicates two locating grooves (“N2”) in the outer ring for secure housing mounting and a brass cage (“MA”) guided on the outer ring, enhancing stability and thermal performance.

• Compact width (37 mm) and standard sizing (75 x 160 x 37) make this unit suitable for heavy-duty applications where installation space is limited.

• High-durability construction ensures extended operational life in demanding environments — ideal for sectors such as power generation, manufacturing and large drive systems.

• Industrial application fit: This bearing delivers performance for machinists and OEMs specifying units for drives, heavy gearboxes and bearing housings, meeting criteria such as high durability, load capacity and precision.

Technical Specification

• Manufacturer: SKF

• Model: QJ315 N2MA

• Type: Angular contact/four-point contact ball bearing (units that combine radial + axial load capability)

• Dimensions: inner diameter d = 75 mm, outer diameter D = 160 mm, width B = 37 mm

• Cage: Brass, guided on outer ring

• Locating grooves: Two in outer ring (N2) for secure housing fitment

• Load ratings: dynamic and static values consistent with heavy-duty class (e.g., dynamic approx. 216 kN, static approx. 200 kN)

• Suitable for bearing housings and industrial bearing units requiring combined axial/radial loading and high durability.

• Availability: B2B stock from our warehouse in Lublin with rapid dispatch.

This bearing is a professional-grade solution for engineers and industrial procurement specialists seeking a single bearing unit that minimizes system complexity, maximizes load capability and supports heavy-duty performance in applications such as drive gearboxes, large-shaft supports and industrial machine tool assemblies.

FAQ

Q1: What is an angular contact/four-point contact bearing and when should it be used?
A: An angular contact-bearing (or four-point contact) is designed to carry combined axial and radial loads and, in the case of a four-point design, axial loads in both directions within one bearing. This makes it optimal for drive systems and bearing housings where shaft forces act in multiple directions. A standard radial bearing usually lacks this dual-direction axial capacity.

Q2: What does the designation “N2MA” imply for this bearing model?
A: The suffix “N2” refers to two locating grooves in the outer ring, which facilitate secure mounting in a housing and prevent ring rotation. “MA” indicates a brass cage guided on the outer ring, offering enhanced stability and better thermal management — beneficial in industrial installations.

Q3: How should I select the correct unit size for my application?
A: Key parameters include the shaft diameter (75 mm in this case), the housing bore (160 mm), and the available width (37 mm). Also evaluate load types (axial vs radial), rotational speed, mounting environment and housing type. This model fits large-shaft applications where combined load performance and high durability are required.

Q4: Is this bearing suitable for bearing housing units in industrial assemblies?
A: Yes — the QJ315 N2MA is tailored for bearing housing usage (obudowa łożyskowa) in industrial settings, offering the structural robustness, load capacity and durability necessary for heavy-duty machines, gear drives and bearing units requiring high reliability.

Q5: What are the benefits of purchasing through our B2B platform?
A: Buying via our B2B platform ensures access to industrial-grade components, bulk-order options, dedicated technical support, and fast dispatch from our warehouse for minimal downtime. Our stock location in Lublin and 24 h delivery enhance operational readiness and supply reliability.