RNA 6908

Double row needle roller bearing with machined rings, with flanges, without an inner ring

Double row needle roller bearings without an inner ring consist of an outer ring with two needle roller and cage assemblies.

They are an excellent choice for compact bearing arrangements in applications where hardened and ground raceways can be provided on the shaft. The outer ring includes flanges to guide the roller and cage assemblies and has features to facilitate relubrication. The roller and cage assemblies and the outer ring form a non-separable unit.

  • High radial load carrying capacity
  • High stiffness
  • Low cross-sectional height
  • Accommodate axial displacement in both directions
  • Enable a larger shaft diameter and a more rigid bearing arrangement

Dimensions

Fw
48 mm
Diameter under rollers
D
62 mm
Outside diameter
C
40 mm
Width
r1,2
min.0.6 mm
Chamfer dimension outer ring
Abutment dimensions - RNA 6908

Abutment dimensions

Da
max.58 mm
Diameter of housing abutment
ra
max.0.6 mm
Fillet radius

Calculation data

SKF performance class
SKF Explorer
Basic dynamic load rating C
76.5 kN
Basic static load rating C0
125 kN
Fatigue load limit Pu
16 kN
Reference speed
8 000 r/min
Limiting speed
9 500 r/min
Associated seals - RNA 6908

Associated seals

48x62x8 HMS5 RG
Radial shaft seal

Description

Properties

Bearing part Bearing without inner ring
Number of rows 2
Outer ring type Machined (solid)
Aligning feature Without
Cage Sheet steel
Number of flanges, outer ring 3
Tolerance class Normal
Material, bearing Bearing steel
Coating Without
Sealing Without
Lubricant None
Relubrication feature With
Indicative carbon footprint for new product 0.92 kg CO2e

Logistics

Product net weight 0.256 kg
eClass code 23-05-09-03
UNSPSC code 31171512

(48X62X40) (RNA6908)

Additional information

Weight 0.256 kg
Size (mm)

Colour