RHP7926CTSULP4Super Precision Angular Contact Ball Bearing – 130 mm ID, 180 mm OD, 24 mm Width, Open, 15° Contact Angle, Phenolic Cage, Universally Ground Light Preload

Product Description

What this part is

RHP 7926CTSULP4 super precision angular contact ball bearing. Series: 7900, extra light section. ISO designation 71926. Bore: 130 mm. Outside Diameter: 180 mm. Width: 24 mm. Contact Angle: 15°. Single row, open, universally ground. Also written 7926-C-T-SUL-P4, 7926 C T SUL P4 and 71926CTSULP4.

Decoding the designation

C: 15° contact angle. T: machined laminated phenolic cage, outer ring land riding, rated to 120 °C. SUL: single bearing, universally ground, light preload when matched. P4: EP7, equivalent to ABEC 7. Fafnir cross designation 2MM9326WICRSUL carries the same 15° angle and phenolic outer land riding cage.

What these specs mean in practice

Basic Dynamic Load Rating: 99.0 kN. Basic Static Load Rating: 91.0 kN. Permissible Axial Load: 55.0 kN. The 7900 extra light section carries a 130 mm bore in a 180 mm outside diameter and only 24 mm of width, which keeps a large spindle journal inside a compact housing. A 15° contact angle favours speed and radial stiffness. Limiting speed runs to 7,500 rpm on grease and 11,300 rpm on oil or oil-air lubrication. The phenolic cage is light and self lubricating and holds ball guidance steady to 120 °C.

Quantity and configuration

One bearing, universally ground. Universally ground rings let this piece be paired with any other universally ground bearing of the same designation, back-to-back, face-to-face or in tandem, and the light preload is achieved by the ground ring faces. Light preload across a matched pair is 652 N, giving 148 N/µm axial rigidity.

Fitting notes

Diameter of Shaft Abutment, da min: 139 mm. Diameter of Housing Abutment, Da max: 171 mm and Db max: 174 mm. Radius of Shaft or Housing Fillet, ra max: 1.5 mm, rb max: 0.8 mm. Bearing chamfer r min: 1.5 mm, r1 min: 1 mm. Effective Load Center a: 32.8 mm. Recommended grease quantity: 8.4 g.

Interchange guidance

ISO base number 71926. Direct equivalents at the same 15° angle and P4 class: NSK 7926CTRSULP4, SKF 71926 CD/P4ADGA, FAG B71926-C-T-P4S-UL, Fafnir 2MM9326WICRSUL.