RHPAngular Contact Ball Bearing – Straight Bore, 35 mm ID, 62 mm OD, 14 mm Width, Open, 15° Contact Angle, Light Preload, Universally Ground

Product Description

What this part is: RHP 7007CTDULP4 super-precision single-row angular contact ball bearing. Bore: 35 mm. Outside Diameter: 62 mm. Width: 14 mm. Contact Angle: 15°. Number Of Rows: 1. Bore Type: Straight. Closure Type: Open. Rolling Elements: chrome steel balls. Bearing Material: carbon chrome bearing steel to BS970 534A99 / 535A99, equivalent to SAE 52100, through hardened and stabilised. Decoding the designation: Series: 7000, ISO dimension series 10. Bore code 07 gives a 35 mm bore. Contact Angle: 15°. Cage Material: laminated phenolic resin. Cage Type: outer-ring guided. Preload: Light. Precision Class: P4. The number is also written 7007-C-T-DUL-P4, 7007CTDULEP7, B 7007 2X TA DUL EP7 and 7007CTRDULP4. The carton also carries the Fafnir cross 2MM9107WI CR DUL, whose 2MM prefix likewise denotes 15°. Load ratings and speeds: Dynamic Load Rating: 19.1 kN. Static Load Rating: 13.7 kN. Limiting Speed: 37,600 rpm with oil-air lubrication and 23,200 rpm with grease. The two figures differ because oil-air carries heat out of the bearing and continuously replenishes the film, while grease lubricates without cooling. Mounted as a light-preload back-to-back pair the limiting speed carries a factor of 0.80; face-to-face mounting halves it again. What these specs mean in practice: A 15° contact angle favours speed and radial stiffness over thrust capacity, which is what a machine tool spindle wants. Axial Preload: 120 N in a light-preload pair. Axial Stiffness: 49 N per micron. Effective Load Centre: 13.5 mm. Lubricant: oil or grease. Maximum Operating Temperature: 120°C, set by the laminated phenolic resin cage. A phenolic cage is light, self-lubricating and quiet, and it runs guided on the outer ring land so the cage is stabilised by the slower-moving ring. Precision and running accuracy: Precision Class: P4. Precision Rating: ABEC 7, ISO 492 Class 4, BS292 EP7. Deviation of mean bore diameter: 0 to minus 5 microns. Deviation of mean outside diameter: 0 to minus 5 microns. Radial runout of the assembled inner ring: 4 microns maximum. Radial runout of the assembled outer ring: 5 microns maximum. The high point of radial runout is marked by a burnished spot on the inner ring face and by a V line on the outer ring outside diameter, and the V also indicates the direction of the contact angle. Mounting data: Shaft abutment diameter d1: 41 mm minimum. Housing abutment diameter D1: 56 mm maximum. Outer ring abutment diameter D2: 57 mm maximum. Bearing fillet radius r: 1.0 mm minimum. Inner fillet radius r1: 0.6 mm minimum. Internal Volume: 7.0 cubic centimetres. Lubrication jet pitch circle diameter: 44.6 mm. Mass: 0.150 kg. Quantity and configuration: Unit Quantity: 1 Pc. One piece from a factory light-preload duplex pair. Universal face control means the inner and outer rings are the same width and the face relationship is ground at manufacture to the light preload value, so this bearing pairs with another universally ground 7007C back-to-back, face-to-face or in tandem at the same preload, with no custom spacers. Interchange guidance: Cross-references on the same envelope and execution: SKF 7007 CD/P4ADGB, FAG B7007-C-T-P4S-DUL, Fafnir 2MM9107WI CR DUL, NSK 7007CTRDULP4. Harmonization Code: 8482.10.50.