SKF 3311A bearings

SKF double row angular contact ball bearing with seals, SKF Explorer

Measurement system: Metric
Bore diameter: 55.000 mm
Outside diameter: 120.000 mm
Width: 49.200 mm
Cr: 112000 N
C0r: 81500 N
Limiting speed: 5300 r/min
Net weight: 2.26 kg
Number of rows: 2
Contact angle deg: 30
Sealing: Without
Cage: Steel cage
Bearing material: Steel
Rolling material: Steel
Internal clearance: CN
Lubricant in bearing: None
Relubrication feature: Without

In stock

Technical specification for SKF 3311A

SKF 3311A
Dimensions
Part Number	3311A
Description	Double row angular contact ball bearing
Number of rows	2
Contact angle	30°
Ring type	One-piece inner and outer rings
Axial internal clearance	CN
Cage	Sheet metal
Sealing	Without
d	55.0 mm	Bore diameter
D	120.0 mm	Outside diameter
B	49.2 mm	Total width
d2	≈68.4 mm	Recess diameter inner ring shoulder
D2	≈109.4 mm	Recess diameter outer ring shoulder
r1,2	min. 2 mm	Chamfer dimension
a	73 mm	Distance pressure point(s)
Abutment dimensions
da	min. 66 mm	Abutment diameter shaft
Da	max. 109 mm	Abutment diameter housing
ra	max. 2 mm	Fillet radius
Calculation Data
C	112.0 kN	Basic dynamic load rating
C0	81.5 kN	Basic static load rating
Pu	3.45 kN	Fatigue load limit
	5300.0 r/min	Limiting speed
	6000.0 r/min	Reference speed

SKF 3311A, Double row angular contact ball bearings correspond, in their design and operation, to a pair of single row angular contact ball bearings in a back-to-back arrangement, while requiring less axial space. They can operate at high speeds and are more suitable than deep groove ball bearings for supporting large axial forces in both directions.

Bore diameter: 55.0 mm
Outside diameter: 120.0 mm
Width: 49.2 mm
Basic dynamic load rating: 112.0 kN
Basic static load rating: 81.5 kN
Contact angle: 30°

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