RHPBSB150SUHP3Ball Screw Support Bearing – 1-1/2 in ID, 72 mm OD, 5/8 in Width, 60° Contact Angle, Heavy Preload

Product Description

What this part is

RHP BSB150SUHP3 ball screw support bearing, BSB series, single row angular contact thrust ball bearing. Bore: 1-1/2 in (38.1 mm). Outside Diameter: 72 mm. Overall Width: 5/8 in (15.875 mm). Bore Type: Straight. Number of Rows: 1. Rolling Elements: Balls. Design Units: Inch bore and width, metric outside diameter. Country of Origin: United Kingdom.

Decoding the designation

Contact Angle: 60°. Preload: Heavy. Precision Class: P3. Mounting Arrangement: Single universally ground. Internal Clearance: N/A. The BSB prefix is RHP’s ball screw support family. The carton carries two cross designations alongside it: NSK 38TAC72 and Fafnir MM9310WI2. Searchable forms of the part number include BSB150SUHP3, BSB-150-SUH-P3 and BSB 150 SUH P3.

What these specs mean in practice

A 60° contact angle is the steep angle used for ball screw thrust duty: it puts almost the whole load path along the screw axis, giving high axial rigidity and precise axial location of the screw end. Heavy preload holds that axial position under reversing feed loads. Universally ground faces mean two or more of these bearings stack directly against each other in back-to-back, face-to-face or tandem rows without shims or spacers, so axial capacity and rigidity scale with the number of rows fitted.

Quantity and configuration

Unit Quantity: 1 Pc. Supplied as a universally ground single bearing at heavy preload, so it mounts against another bearing of the same designation and preload class in 2, 3 or 4 rows.

Interchange guidance

Cross designations carried on the carton: NSK 38TAC72, Fafnir MM9310WI2. Harmonization Code: 8482.10.50.