RHP7211CTSULSuper-Precision Angular Contact Ball Bearing – 55 mm ID, 100 mm OD, 21 mm Width, Open, 15°, Light Preload, ABEC 7

Product Description

What this part is:

RHP 7211CTSUL super-precision angular contact ball bearing. Bore Diameter: 55 mm. Outside Diameter: 100 mm. Overall Width: 21 mm. Series: 7200. Base Number: 7211. Single row, open, chrome steel rings and balls. Searchable forms of the designation include 7211CTSUL, 7211 C T SUL, 7211-C-T-SUL, 7211CTSULP4 and the RHP B-series form B7211X2TAULEP1.

Decoding the designation:

C — Contact Angle: 15°.

T — Cage: machined laminated phenolic, outer-ring guided, rated to 120 °C.

SUL — Arrangement: single universally matchable bearing with light preload built in.

Precision Class: ABEC 7 / ISO P4, the RHP EP7 class.

What these specs mean in practice:

A 15° contact angle favours speed and radial stiffness over thrust capacity, which is why it is the standard choice for machine tool spindles. Dynamic Load Rating: 46.1 kN (10,363 lbf). Static Load Rating: 36.3 kN (8,160 lbf). Limiting Speed: 13,000 rpm. The machined phenolic cage is light, self-lubricating and quiet at speed, and it tolerates oil-mist and oil-air lubrication. ABEC 7 tolerances give tighter running accuracy and lower vibration than a standard-class bearing.

Quantity and configuration:

Unit Quantity: 1 Pc. Universal matching means any two pieces of this designation can be stacked back-to-back, face-to-face or in tandem.

Mounting data:

Preload: Light, set at the factory by the ring face grinding. A preloaded bearing carries no radial internal clearance class. Lubricant: oil.

Interchange guidance:

Same 55 x 100 x 21 mm envelope, 15° contact angle, phenolic cage and light preload: SKF 7211 CDGA/P4A, FAG B7211-C-T-P4S-UL, NSK 7211CTRSULP4. The 25° A5 execution of the 7211 envelope carries different thrust and speed figures and is not a substitution.