Description:

FAG QJ308-XL-N2-MPA-T42A — Four-Point Contact Ball Bearing, Split Inner Ring, Brass Cage, N2 Grooves, Special Axial C2 Clearance (40x90x23 mm)

Specifications

Brand: FAG
Item Number / MPN: QJ308-XL-N2-MPA-T42A
Also Known As: QJ308-N2-MPA-T42A
Manufacturer Part Number: 0384024084380
EAN: 4026677657190
Country of Origin: Germany
Category: Four Point Contact Ball Bearing
Seal: None (open bearing)
Design: Split inner ring
Cage Type: MA / MPA — Machined brass cage, guided/centered by the outer ring (housing guided)
External Modification: N2 — Two locating slots (notches) / locking grooves in the outer ring (180° apart)
Internal Clearance: C2 (less than normal)
Precision / Axial Clearance: T42A — Special axial C2 clearance
Heat Stabilization: None (up to 120°C)
Dimensions & Weight

Bore (d): 40 mm (1.5748 in)
Outside Diameter (D): 90 mm (3.5433 in)
Width (B): 23 mm (0.9055 in)
Weight: 0.786 kg (≈ 1.73 lb)
Performance Data

Dynamic Load Rating (Cr): 84,000 N
Static Load Rating (C0r): 62,000 N
Reference Speed: 6,400 rpm
Limiting Speed: 15,400 rpm
Suffix / Series Meaning

XL: X-life (optimized internal design for higher performance, increased load capacity, longer service life, reduced heat generation)
N2: Two locating slots / notches 180° apart in one outer ring side face (locking grooves)
MPA: Window-type machined brass cage, outer-ring guided
T42A: Special axial C2 clearance (reduced clearance vs. standard)
FAG QJ308-XL-N2-MPA-T42A is a four-point contact ball bearing with a split inner ring, designed to carry axial loads in both directions while also supporting radial loads. The split inner ring design makes it a compact alternative to matched angular contact bearing pairs in certain applications. This version includes N2 locating slots in the outer ring for axial/rotational positioning and features T42A special axial C2 clearance (reduced clearance) for applications requiring controlled axial play. The bearing is open (no seals) and uses a machined brass cage guided by the outer ring for stable operation. The X-life internal design supports longer service life and improved performance.

Typical Applications

Commonly used in:

Gearboxes and transmissions
Machine tool spindles and rotary tables
Industrial drives, pumps, and compressors
Compact designs requiring axial load capacity in both directions with controlled axial clearance and outer ring locating features

   PACKAGE INCLUDES: ONE (1) FAG Bearing QJ308 XL N2 MPA T42A