SKF234430 BM1/SPDouble Direction Angular Contact Thrust Ball Bearing – 150 mm Bore x 225 mm OD x 90 mm Width, 60 Degree, Open

Product Description

What this part is

SKF 234430 BM1/SP double-direction angular contact thrust ball bearing. Bore: 150 mm. Outside diameter: 225 mm. Total width: 90 mm. Series: 2344. Number Of Rows: 2. Bore form: straight. Closure: open. Rolling elements: bearing steel balls in a machined brass cage.

Decoding the designation

Contact Angle: 60°. Cage: BM1, a machined brass cage with the rolling elements centred on the cage. Precision Class: SP — dimensional accuracy to P5 with running accuracy to P4. The carton also carries the plain forms 234430 BM1 SP P5 and 234430 M SP.

What these specs mean in practice

Dynamic Load Rating: 168 kN (37,800 lbf). Static Load Rating: 520 kN (117,000 lbf). Limiting Speed: 3,600 rpm. A 60° contact angle puts almost the whole load path along the axis, which is why this type is the standard fixed-end support for a heavy machine-tool ball screw: very high axial stiffness in both directions and a static capacity three times the dynamic figure. The machined brass cage carries high cage loads at the large ball complement this design uses.

Quantity and configuration

Unit Quantity: 1 Pc. One double-direction bearing, two ball rows in a single assembly, supplied open. Preload: light. Item weight: 23.4 lb.

Fitting notes

Straight bore. The unit locates the shaft axially in both directions from a single housing seat, so no second thrust position is needed at that end. Internal Clearance: N/A on a preloaded execution. Operating range: -30 °C to 120 °C.

Interchange guidance

FAG 234430-M-SP is the direct Schaeffler equivalent on the same envelope, angle and cage. NSK 150TAC20X is the equivalent 60° ball-screw-support execution.