KOONUSRULL-LAAGER 31307/DF SKF

Kirjeldus

31307/DF
Matched tapered roller bearings arranged face-to-face
Matched tapered roller bearings arranged face-to-face (X-arrangement, load lines diverge towards the bearing axis) accommodate high radial loads and axial loads in both directions. The precision manufactured intermediate ring between the outer rings enables a defined internal clearance or preload to be achieved when mounted. Matched tapered roller bearings are typically used in gearboxes, hoisting equipment, rolling mills, and machines in the mining industry.
High radial load carrying capacity
Designed for axial loads in both directions
Relatively high stiffness
Surface finish on the contact surfaces of the rollers and raceways that enhances operational reliability

DIMENSIONS
Bore diameter 35 mm
Outside diameter 80 mm
Width, total 45.5 mm
Width, inner ring 42 mm
Width, outer ring 45.5 mm
Contact angle 28.811 °

PERFORMANCE
Basic dynamic load rating 129 kN
Basic static load rating 134 kN
Reference speed 5000 r/min
Limiting speed 8500 r/min
SKF performance class SKF Explorer

PROPERTIES
Bearing part Complete bearing
Number of rows 2
Locating feature, bearing outer ring None
Bore type Cylindrical
Cage Sheet metal
Arrangement of contact angle (double-row bearing) Face-to-face (X)
Matched arrangement Face-to-face (X)
Number of bearings in matched set 2
Coating Without
Sealing Without
Lubricant None
Relubrication feature With