QJ 309 MA

Four-point contact ball bearing

Four-point contact ball bearings can accommodate high axial loads in both directions and small radial loads.

They can operate at very high speeds and are more suitable than deep groove ball bearings for supporting large axial forces. The outer ring, with ball and cage assembly, can be mounted separately from the two inner ring halves.

  • High-speed capability
  • Accommodate high axial loads in both directions and small radial loads
  • Require considerably less axial space than double row angular contact ball bearings

Dimensions

d
45 mm
Bore diameter
D
100 mm
Outside diameter
B
25 mm
Width
d1
58 mm
Shoulder diameter inner ring
D1
81.2 mm
Shoulder diameter outer ring/ inner diameter housing washer
a
51 mm
Distance pressure point(s)
r1,2
min.1.5 mm
Chamfer dimension inner ring
Abutment dimensions - QJ 309 MA

Abutment dimensions

da
min.54 mm
Abutment diameter shaft
Da
max.91 mm
Abutment diameter housing
ra
max.1.5 mm
Fillet radius

Calculation data

SKF performance class
SKF Explorer
Basic dynamic load rating C
100 kN
Basic static load rating C0
83 kN
Fatigue load limit Pu
3.55 kN
Limiting speed
12 000 r/min
Calculation factor A
0.0202
Limiting value e
0.95
Calculation factor X
0.6
Calculation factor Y0
0.58
Calculation factor Y1
0.66
Calculation factor Y2
1.07

Description

Properties

Contact type Four-point contact
Number of rows 1
Locating feature, bearing outer ring None
Ring type Two-piece inner ring and one-piece outer ring
Cage Machined metal
Matched arrangement No
Universal matching bearing No
Axial internal clearance CN
Material, bearing Bearing steel
Coating Without
Sealing Without
Lubricant None
Relubrication feature Without

Logistics

Product net weight 1.02 kg
eClass code 23-05-08-05
UNSPSC code 31171538

(45X100X25) (QJ309MA)

Additional information

Weight 1.02 kg
Size (mm)

Colour