RHP7216CTBSULP6Super Precision Angular Contact Ball Bearing – Straight Bore, 80 mm ID, 140 mm OD, 26 mm Width, Open, 15 Degree Contact Angle, ABEC 3, Light Preload, Phenolic Cage

Product Description

What this part is

RHP 7216CTBSULP6 super-precision angular contact ball bearing, 80 mm bore, 140 mm outside diameter, 26 mm width. The inner and outer raceways are offset so the ball contact line runs at an angle across the bearing, which is what lets an angular contact bearing carry thrust in one direction alongside its radial load.

Decoding the designation

Three designations appear on the carton and all three agree on the contact angle. 7216-C-TB-SUL-P6 is the RHP form: C gives a 15° contact angle, SUL a single universally ground bearing at light preload and P6 the ABEC 3 precision grade. 2MM216WI-CR-SUL is the Fafnir equivalent, where 2MM confirms 15° and CR marks a phenolic outer-land-riding cage. 7216 CD P6 DGA is the SKF form, where the C again gives 15° and DGA is the light rung of SKF’s preload ladder, confirming the light setting a second time.

What these specs mean in practice

A 15° contact angle is the high-speed end of the angular contact range. The shallow contact line keeps ball spin and heat generation low, which is what buys the speed, and the trade is thrust capacity: a 25° or 40° bearing in the same envelope carries substantially more axial load. Light preload gives running accuracy and stiffness with the least heat of the preload ladder, suiting high-speed positions where a heavier setting would run the spindle hot. Basic dynamic capacity is 94 kN and basic static capacity 55 kN, with a limiting speed of 10,000 rpm.

Preload and clearance

This bearing is preload-set rather than clearance-set. Internal geometry is fixed by the axial force applied through the ground faces, so radial internal clearance is not a parameter for it and no clearance class applies.

Quantity and configuration

One bearing, 26 mm wide, straight bore, open on both faces, no snap ring groove. Universal grinding means the faces are ground so bearings from the series can be mounted together back-to-back, face-to-face or in tandem, with the light preload established on clamp-up.

Interchange guidance

The 80 × 140 × 26 mm envelope is the ISO 7216 size. Same-angle equivalents include SKF 7216 CD/P6 and Fafnir 2MM216WI CR SUL, both 15°. The 7216E and 3MM216WI executions occupy the same envelope at 25°, and a plain 7216 runs at 40°, so both are related sizes rather than interchanges. Precision grade is the other axis to match: a P4 or EP7 version of this number is ABEC 7, a tighter grade than the ABEC 3 here.