305270 D

Double row angular contact ball bearing with two-piece inner ring and relubrication feature

Double row angular contact ball bearing, with two-piece inner ring and relubrication feature, correspond to a pair of single row angular contact ball bearings in a back-to-back arrangement.

The two-piece inner ring enables incorporation of more balls, resulting in higher load carrying capacity. The annular lubrication groove and holes in the outer ring facilitates relubrication.

  • Accommodate very high axial loads in both directions, radial loads, and tilting moments
  • Relubrication feature
  • Suitable where a stiff bearing arrangement is required
  • Require less axial space than equivalent pair of single row angular contact ball bearings

Dimensions

d
260 mm
 Bore diameter
D
369.5 mm
 Outside diameter
B
92 mm
 Width
d1
≈304.45 mm
 Shoulder diameter inner ring for two-piece inner ring
D1
≈345 mm
 Shoulder diameter outer ring
b
13.9 mm
 Width annular lubrication groove at outer ring
K
7.5 mm
 Diameter lubrication hole (outer ring)
r1,2
min.2.1 mm
 Chamfer dimension inner ring for two-piece inner ring
a
246 mm
 Distance pressure point(s)

Calculation data

Basic dynamic load rating C
397 kN
Basic static load rating C0
710 kN
Fatigue load limit Pu
17.3 kN
Reference speed
1 700 r/min
Limiting speed
1 700 r/min
Calculation factor kr
0.095
Limiting value e
0.86
Calculation factor X
0.62
Calculation factor Y0
0.63
Calculation factor Y1
0.73
Calculation factor Y2
1.17
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SKU: 305270 D-SKF Categories: , , ,
SKF

Description

Properties

Contact angle: 32 °

Contact type Normal contact (two-point contact)
Number of rows 2
Locating feature, bearing outer ring None
Ring type Two-piece inner ring and one-piece outer ring
Cage Machined metal
Arrangement of contact angle (double-row bearing) Back-to-back (O)
Matched arrangement No
Universal matching bearing No
Axial internal clearance NSTD
Material, bearing Bearing steel
Coating Without
Sealing Without
Lubricant None
Relubrication feature With

(260X369.5X92) (305270D) (305270-D)

Additional information

Weight 30 kg
Size (mm)

Colour

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