RHPBSB150SULP4Ball Screw Support Bearing – 1.5 in ID, 2.8346 in OD, 0.625 in Width, Open, 60° Contact Angle, Light Preload.

Product Description

What this part is: RHP BSB150SULP4 ball screw support bearing. Series: BSB. Base Number: BSB150. Bore / Shaft Size: 1-1/2 in (38.1 mm). Outside Diameter: 72 mm (2.8346 in). Overall Width: 5/8 in (15.875 mm). Number Of Rows: 1. Rolling Elements: Balls. Bearing Material: Bearing Steel. Closure Type: Open. Bore Type: Straight. Item Weight: 0.62 lbs. Harmonization Code: 8482.10.50. Decoding the designation: Contact Angle: 60°, set by the BSB ball screw support family. SU: single universally ground, so any two bearings of the same designation stack directly against one another. Preload: Light, given by the L. Precision Class: P4, equivalent to ABEC 7. Searchable forms of the number: BSB150SULP4, BSB-150-SUL-P4, BSB 150 SUL P4, BSB150 SUL P4. What these specs mean in practice: The 60° contact angle is what separates a ball screw support bearing from an ordinary angular contact bearing: the steep raceway puts almost the whole ball load along the shaft axis, giving high axial stiffness and holding a loaded ballscrew in position. Light preload keeps running torque and heat down while still removing axial play. Cage Type: Machined. Cage Material: Polyamide. Max Temp: 120°C. Min Temp: -30°C. Quantity and configuration: Unit Quantity: 1 Pc. Universally ground faces allow single, duplex or stacked mounting. Preloaded execution, so the bearing is supplied set rather than clearance-graded. Interchange guidance: Cross-Reference 1: NSK 38TAC72B, the same 38.1 x 72 mm ball screw support envelope at 60°. Cross-Reference 2: SKF BTM 40/72 is a related size on a 40 mm bore. MPN Variants recorded on this part: BSB150 QF/DF EP7, MM9310WI2, 38TAC72.