RHP7907ETDULP4Super Precision Angular Contact Ball Bearing – Straight Bore, 35 mm ID, 55 mm OD, 10 mm Width, Open, 25° Contact Angle, Light Preload, ABEC 7.

Product Description

What this part is: RHP 7907ETSULP4 super precision angular contact ball bearing, ISO dimension series 19. Bore: 35 mm. Outside Diameter: 55 mm. Width: 10 mm. Contact Angle: 25°. 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: 7900, ISO dimension series 19, which is the ISO 719 family, so 7907 and 71907 are the same bearing. Base Number: 7907. Contact Angle: 25°, the RHP E execution, catalogued as A5. Cage Material: Laminated phenolic resin. Cage Type: Machined, outer-ring guided. Grouping: SU, single universal. Preload: Light. Precision Grade: P4, equivalent to ABEC 7 and ISO Class 4. Searchable forms of the number include 7907ETSULP4, 7907-E-T-SUL-P4, 7907 E T SUL P4, 71907, 71907E, B7907X3 and 3MM9307WICRSUL. Load ratings and speed: Dynamic Load Rating: 11.4 kN. Static Load Rating: 8.7 kN. Limiting Speed, oil or oil-air lubrication: 35,200 rpm. Limiting Speed, grease lubrication: 21,800 rpm. Both figures are single-bearing values; a back-to-back pair at light preload runs at 0.80 of the tabulated speed. What these specs mean in practice: The 19 series is the thin section of the super precision range, giving a compact 10 mm width at a 35 mm bore where radial space is limited. A 25° contact angle carries more thrust and less speed than the 15° C execution on the same envelope. Axial Preload: 100 N paired. Axial Stiffness: 94 N per micrometre paired. Effective Load Centre: 15.5 mm. Maximum Operating Temperature: 120 °C, set by the laminated phenolic cage. Lubricant: grease or oil. Mounting data: Inner Ring Abutment Diameter: 40 mm minimum. Outer Ring Abutment Diameter: 50 mm maximum. Housing Abutment Diameter: 52.5 mm maximum. Fillet Radius r min: 0.6 mm. Fillet Radius r1 min: 0.3 mm. Internal Volume: 3.6 cm3. Mass: 0.074 kg. Quantity and configuration: Unit Quantity: 1 Pc. Universal face control means this bearing pairs with another of the same execution back-to-back or face-to-face at the rated preload, and shares load equally in tandem. Interchange guidance: Cross-Reference: SKF 71907 ACDGA/P4A. Cross-Reference: FAG B71907-E-T-P4S-UL. Cross-Reference: NSK 7907A5TYNSULP4. The RHP B-series form is B7907X3 and the Fafnir cross is 3MM9307WICRSUL. A 7907C shares the 35 x 55 x 10 mm envelope at a 15° contact angle, making it a related size rather than a direct substitution.