3318 DMA/VB188

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

Double row angular contact ball bearings, with two-piece inner ring, correspond to a pair of single row angular contact ball bearings in a back-to-back arrangement, while requiring less axial space than the equivalent pair of single row angular contact ball bearings.

The two-piece inner ring enables incorporation of a larger number of balls, with a larger contact angle, providing a high load carrying capacity, especially in the axial direction.

  • Accommodate very high axial loads in both directions, radial loads, and tilting moments
  • Suitable where a stiff bearing arrangement is required
  • Separable design means outer ring with ball and cage assemblies can be mounted independently of the inner ring halves

Dimensions

Bore diameter 90 mm
Outside diameter 190 mm
Width 73 mm
Contact angle 45 °

Performance

Basic dynamic load rating 225 kN
Basic static load rating 250 kN
Reference speed 3 800 r/min
Limiting speed 3 200 r/min

Description

Properties

Contact angle : 45 °

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 CN
Material, bearing Bearing steel
Coating Without
Sealing Without
Lubricant None
Relubrication feature Without

(90X190X73) (3318DMA) (3318-DMA)

Additional information

Weight 10.18 kg
Size (mm)

Colour

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