RHP7214CTSULP4Super-Precision Angular Contact Ball Bearing – Straight Bore, 70 mm ID, 125 mm OD, 24 mm Width, Open, 15° Contact Angle, Light Preload, Single Universal, ABEC 7

Product Description

What this part is

RHP 7214CTSULP4 super-precision angular contact ball bearing. Bore 70 mm, outside diameter 125 mm, width 24 mm. Straight bore, open on both faces, single row of balls, machined phenolic cage riding on the outer ring land.

Decoding the designation

72 is the ISO medium angular contact dimension series and 14 is the bore code, giving a 70 mm bore. C denotes a 15° contact angle in the RHP scheme. T is a fabric-base laminate phenolic cage. SU marks a single universally ground bearing and L sets light preload. P4 is ISO Class 4, equivalent to ABEC 7. The carton also carries 2MM215WICRSUL, 214HDL and B7214CTPAP4UL, whose 2MM code confirms the 15° angle, whose CR and TPA codes confirm the phenolic cage, and whose UL confirms universal light preload.

What these specs mean in practice

A 15° contact angle favours speed and radial stiffness over thrust capacity, which is the usual choice for a grinding or milling spindle running at high rpm. A phenolic cage guided on the outer ring land is light and self-lubricating, so it tolerates higher surface speed than a steel cage. Light preload removes internal play while keeping torque and heat generation low. ISO Class 4 controls bore, outside diameter and raceway runout to super-precision limits.

Quantity and configuration

One piece. Universal grinding means any two units of this designation stack directly as a back-to-back, face-to-face or tandem set, with the light preload built into the ground ring faces. A single-row angular contact bearing takes thrust in one direction, so a second bearing opposes it.

Fitting notes

Ring faces are ground flat and square for direct abutment, so preload develops when the shaft nut and housing cap are drawn fully home. The bearing is supplied dry, which suits oil mist, circulating oil or a measured grease charge.

Interchange guidance

Same 15° equivalents are the FAG B7214-C-T-P4S-UL and the SKF 7214 CDGA/P4A. The Fafnir 2MM215WICRSUL is the same bearing under the WI numbering scheme.