RHPSuper Precision Angular Contact Ball Bearing – 50 mm ID, 90 mm OD, 20 mm Width, Open, 15°, Medium Preload, ABEC 7.

Product Description

What this part is: RHP 7210CTUMP4 super precision angular contact ball bearing, ISO dimension series 02. Bore: 50 mm. Outside Diameter: 90 mm. Width: 20 mm. Contact Angle: 15°. Number of Rows: 1. Rolling Elements: Steel balls. Bearing Material: Carbon chrome bearing steel to SAE 52100. Bore Type: Straight. Closure Type: Open. Decoding the designation: Series: 7200, ISO dimension series 02. Base Number: 7210. Contact Angle: 15°. Cage Material: Laminated phenolic resin. Cage Type: Machined, outer-ring guided. Preload: Medium. Precision Grade: P4, equivalent to ABEC 7 and ISO Class 4. Searchable forms of the number include 7210CTUMP4, 7210-C-T-UM-P4, 7210 C T DUM P4, B7210X2TAUMEP7, 2MM210WICRDUM, 210HDM and 7210CDP4ADGB. Load ratings and speed: Dynamic Load Rating: 43.0 kN. Static Load Rating: 31.5 kN. Limiting Speed, oil or oil-air lubrication: 25,400 rpm. Limiting Speed, grease lubrication: 15,700 rpm. Both figures are single-bearing values; a back-to-back pair at medium preload runs at 0.60 of the tabulated speed. What these specs mean in practice: A 15° contact angle favours rotational speed and radial stiffness, while a 25° execution on the same envelope trades speed for thrust capacity. Axial Preload: 590 N paired. Axial Stiffness: 102 N per micrometre paired. Effective Load Centre: 19.4 mm. Maximum Operating Temperature: 120 °C, set by the laminated phenolic cage. Lubricant: grease or oil. Mounting data: Inner Ring Abutment Diameter: 57 mm minimum. Outer Ring Abutment Diameter: 83 mm maximum. Housing Abutment Diameter: 85 mm maximum. Fillet Radius r min: 1.1 mm. Fillet Radius r1 min: 0.6 mm. Internal Volume: 21.7 cm3. Mass: 0.457 kg. Quantity and configuration: Unit Quantity: 1 Pc. The carton is marked DUM, a factory-matched duplex set at medium preload. Universal face control means the bearing mounts back-to-back or face-to-face with another of the same execution at the rated preload, and shares load equally in tandem. Interchange guidance: Cross-Reference: SKF 7210 CDGB/P4A. Cross-Reference: FAG B7210-C-T-P4S-UM. The RHP B-series form is B7210X2TAUMEP7 and the Fafnir cross is 2MM210WICRDUM. A 7210A5 shares the 50 x 90 x 20 mm envelope at a 25° contact angle, making it a related size, not a substitution.