RHP7007CTDUHP4Super Precision Angular Contact Ball Bearing – 35 mm ID, 62 mm OD, 14 mm Width, Open, 15° Contact Angle, Heavy Preload, P4

Product Description

What this part is: RHP 7007CTDUHP4 super precision angular contact ball bearing. Series: 70. Bore: 35 mm. Outside diameter: 62 mm. Width: 14 mm. Contact angle: 15°. Closure: open. Cage: machined laminated phenolic, outer-ring land riding. Precision class: P4, RHP EP7, ABEC 7. Preload: heavy. Decoding the designation: 7007: 70-series angular contact ball bearing, 35 mm bore. C: 15° contact angle. T: machined laminated phenolic cage, outer-ring guided, rated to 120 °C. DUH: duplex grouping, heavy preload. P4: RHP EP7 precision, ABEC 7. The carton carries three schemes for the same bearing: RHP 7007C-T-DUH-P4, RHP B-series B7007X2TADUHEP7 and Fafnir 2MM9107WI-CR-DUH. X2 and 2MM are both the 15° contact angle, EP7 and P4 the same class. Load ratings and speed: Basic dynamic load rating Cr: 24.1 kN. Basic static load rating C0r: 13.7 kN. Permissible axial load Pa: 9.35 kN. Limiting speed, grease lubrication: 23,800 rpm. Limiting speed, oil-air lubrication: 36,100 rpm. Effective load centre a: 13.5 mm. Calculation factor f0: 15.0. Mass: 0.151 kg. Recommended grease quantity: 0.91 g. What these specs mean in practice: Heavy preload on this section is 493 N, giving 94 N per µm of axial rigidity in a DB or DF pair and a measured axial clearance of -28 µm. That is the stiffest of the four standard settings and holds spindle position under the largest cutting load, at the cost of more heat and a lower practical speed than light preload. The 15° contact angle keeps the ball path close to radial, which is what allows the 23,800 rpm grease limit at this bore. Phenolic riding on the outer ring land keeps the cage located by the raceway and carries oil into the ball track. Fitting notes: Shaft abutment diameter da: 41 mm minimum. Housing abutment diameter Da: 56 mm maximum, Db: 57 mm maximum. Chamfer dimensions r 1 mm minimum, r1 0.6 mm minimum. Permissible shaft or housing fillet radius ra: 1 mm maximum, rb: 0.5 mm maximum. Preload and rigidity for the 7007C section in a DB or DF pair: EL 58 N / 36 N per µm, L 121 N / 49 N per µm, M 251 N / 67 N per µm, H 493 N / 94 N per µm. Quantity and configuration: One bearing, ground as one half of a factory heavy-preload duplex pair. The full DUH pair measures 28 mm across both rings. Country of origin: United Kingdom. Interchange guidance: FAG B7007-C-T-P4S-DUH is a 15° heavy-preload equivalent at this envelope. SKF 7007 CD/P4ADGC is the same 15° envelope at medium preload (DGC), so it is lighter than DUH. Fafnir 2MM9107WI-CR-DUH is the same bearing in Timken nomenclature. Searchable forms: 7007CTDUHP4, 7007CTDUHP4-1/2PR, 7007 C T DUH P4, 7007C-T-DUH-P4, 7007X2TADUHEP7, B-7007-X2-TA-DUH-EP7, 2MM9107WI.