Fafnir5311W-BRDouble Row Angular Contact Ball Bearing – 55 mm ID, 120 mm OD, 49.22 mm Width, Open, 20° Contact Angle

Product Description

What this part is:

Fafnir 5311W-BR double-row angular contact ball bearing, 55 x 120 x 49.22 mm, 5300 series. One complete double-row bearing. Unit Quantity: 1 Pc. Base Number: 5311.

Decoding the designation:

5311 — Fafnir double-row angular contact series 5300 at a 55 mm bore. Timken publishes 3311 as the cross designation for the same envelope.

W — low outer-ring shoulder. Timken publishes a 20° contact angle for this size.

Specifications:

Bearing Type: Double Row Angular Contact Ball Bearing. Series: 5300. Bore Diameter: 55 mm. Outside Diameter: 120 mm. Overall Width: 49.22 mm (1.938 in). Contact Angle: 20°. Number Of Rows: 2. Rolling Elements: Ball. Bore Type: Straight. Closure Type: Open. Bearing Material: Chrome Steel. Internal Clearance: CN. Dynamic Load Rating: 144,000 N. Static Load Rating: 113,000 N. Item Weight: 2.72 kg (6.00 lb).

Dimensions and mounting:

Bore Diameter: 55 mm. Outside Diameter: 120 mm. Overall Width: 49.22 mm (1.938 in). Max Housing Fillet Radius: 2 mm. Shaft Backing Shoulder Diameter: 67.437 mm. Housing Backing Shoulder Diameter: 107.442 mm.

Compatibility and replacement:

The 55 x 120 mm double-row angular contact envelope is an ISO standard shared by 3311 and 5311 parts from other makers. Those catalogue parts are built at 30°; this part is 20°. Crosses: SKF 3311 A, FAG 3311-BD-XL, NSK 3311, NTN 5311, Koyo 5311, MRC 5311, RHP 3311, each at 30° contact angle. MPN Variants: 5311W-BR, 5311-W-BR, 5311WBR, 5311W, 3311.

Frequently asked questions:

What is the contact angle of the Fafnir 5311W-BR?

Contact Angle: 20°.

What are the load ratings of the 5311W-BR?

Dynamic Load Rating: 144,000 N. Static Load Rating: 113,000 N.

What are the bore, outside diameter and width?

Bore Diameter: 55 mm. Outside Diameter: 120 mm. Overall Width: 49.22 mm (1.938 in).