SKF234411 BM1/SPAngular Contact Thrust Ball Bearing — Double Direction, 55 mm ID, 90 mm OD, 44 mm Height, 60° Contact Angle, SP Precision

Product Description

What this part is:

SKF 234411 BM1/SP is a super-precision double direction angular contact thrust ball bearing with a 60° contact angle. It locates a machine tool spindle axially in both directions and pairs with a double row cylindrical roller bearing of the NN 30 K series.

Decoding the designation:

2344 — double direction angular contact thrust ball bearing, series 2344, matched to the NN 30 series.

11 — bore code, 11 x 5 = 55 mm bore.

M1 — machined brass cage.

SP — SKF special precision tolerance class.

What these specs mean in practice:

Bore Diameter: 55 mm. Outside Diameter: 90 mm. Height: 44 mm. Contact Angle: 60°. Axial Load Capability: Double-direction. Number Of Rows: 2. Cage Material: Machined brass. Precision Class: SP. Rolling Elements: Ball. Closure Type: Open.

The 60° angle gives high axial stiffness. The bearing takes axial load; the companion cylindrical roller bearing takes the radial load.

Quantity and configuration:

Unit Quantity: 1 Pc. Complete double direction bearing.

Interchange guidance:

Current SKF design for this size: BTW 55 CTN9/SP, which uses a polyamide cage instead of brass. Matching 60° double direction bearings: FAG 234411-M-SP, NSK 55TAC20D. Pairs with NN 3011 K series cylindrical roller bearings. MPN variants: 234411 BM1/SP, 234411-BM1/SP, 234411BM1SP. Harmonization Code: 8482.10.50.