RHP7211ETQULP4Super Precision Angular Contact Ball Bearing – 55 mm ID, 100 mm OD, 21 mm Width, Open, 25° Contact Angle, Phenolic Cage, Quadruplex Universal Light Preload Set

Product Description

What this part is:

RHP 7211ETQULP4 is a super precision single-row angular contact ball bearing, open, universally ground, supplied as a quadruplex set of four bearings. Unit Quantity: 4 Pcs. Series: 7200. Bore: 55 mm. Outside Diameter: 100 mm. Width: 21 mm. Contact Angle: 25°. Also written 7211-E-T-QUL-P4, 7211 E T QUL P4 and 7211ETQUL P4.

Decoding the designation:

7211 — ISO base number, 55 x 100 x 21 mm angular contact ball bearing.

E — 25° contact angle.

T — machined laminated phenolic cage, outer ring land riding, rated to 120 °C.

QUL — quadruplex set, universally ground, light preload.

P4 — EP7, equivalent to ABEC 7.

B7211X3TA4ULEP7 and Fafnir 3MM211WICRQUL — carton cross designations, 25° contact angle and EP7 class.

Specifications:

Basic Dynamic Load Rating: 63.5 kN per bearing. Basic Static Load Rating: 38.0 kN per bearing. Permissible Axial Load: 32.5 kN. Limiting Speed: 13,000 rpm grease; 19,400 rpm oil-air. Precision Class: ABEC 7 / P4. Cage Material: Phenolic. Preload: Light, 491 N across a pair. Axial Rigidity: 182 N/µm. Axial Clearance: 13 µm measured. Effective Load Center a: 28.6 mm. Mounting Arrangement: Universal.

Dimensions and mounting:

Diameter of Shaft Abutment, da min: 64 mm. Diameter of Housing Abutment, Da max: 91 mm and Db max: 94 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. Grease quantity: 3.7 g per bearing.

Compatibility and replacement:

Cross-Reference 1: NSK 7211A5TRQULP4. Cross-Reference 2: SKF 7211 ACD/P4A. Cross-Reference 3: FAG B7211E.T.P4S.QUL. Cross-Reference 4: Fafnir 3MM211WICRQUL. Cross-Reference 5: NSK 7211CTRQULP4 (15 deg contact angle vs 25 deg).

Frequently asked questions:

How many bearings are in the RHP 7211ETQULP4 listing?

Four bearings, supplied as a universally ground quadruplex set.

What contact angle does the RHP 7211ETQULP4 have?

25°. The E in the designation is the RHP code for 25°, matched by X3 on the B7211X3TA4ULEP7 carton marking and 3MM on Fafnir 3MM211WICRQUL.

What are the size and precision class?

55 mm bore, 100 mm outside diameter, 21 mm width. P4 is EP7, equivalent to ABEC 7.