RHPBSB093SUHP3Ball Screw Support Bearing – 23.838 mm (15/16 in) ID, 62 mm OD, 15.875 mm (5/8 in) Width, Open, 60° Contact Angle, Heavy Preload

Product Description

What this part is

RHP BSB093SUHP3 ball screw support bearing, single row, open. Bore: 23.838 mm (15/16 in). Outside diameter: 62 mm (2-7/16 in). Width: 15.875 mm (5/8 in). Contact angle: 60°. Preload: heavy. Grind: single universal.

Decoding the designation

BSB: ball screw support bearing, RHP’s 60° thrust-optimised angular contact family. 093: inch-series size code, 15/16 in bore. SU: single universally ground. H: heavy preload. P3: RHP precision class code.

What these specs mean in practice

A 60° contact angle puts almost the whole load path along the shaft axis, which is what a ball screw needs: the screw generates high thrust and very little radial load, and the steep angle converts that into high axial stiffness in a short envelope. Static capacity exceeds dynamic capacity on this family, because the duty is holding position under thrust rather than accumulating raceway revolutions. Heavy preload removes axial play entirely, which is what keeps screw backlash and positioning error down on a machine axis. Universal grinding means two or three of these stack directly and reach the catalogue preload with no shims.

Quantity and configuration

1 Pc. Single universally ground bearing, ready to stack back-to-back, face-to-face or in tandem with like bearings.

Fitting notes

Mixed inch and metric envelope: the bore and width are inch sizes and the outside diameter is metric, which is characteristic of the RHP inch BSB series. The 60° angle means the thrust face must sit against the screw’s load direction.

Interchange guidance

Same envelope in the duplex execution: RHP BSB093DUHP3, a universally matched pair on the same 23.838 x 62 x 15.875 mm section, catalogued at 26.5 kN dynamic and 47.5 kN static with a 2,300 rpm limiting speed. Written forms in circulation: BSB093SUHP3, BSB-093-SUH-P3, BSB 093 SUH P3, BSB093-SUH-P3. Same family in other schemes: NSK BSBD series, FAG 7602 series, NTN BST series, NSK TAC series, all 60° ball screw support types.