RHP7008CTDULP4Super-Precision Angular Contact Ball Bearing – 40 mm ID, 68 mm OD, 15 mm Width, Open, 15°, Light Preload, ABEC 7

Product Description

What this part is

RHP 7008CTDULP4 super-precision angular contact ball bearing. Bore: 40 mm. Outside diameter: 68 mm. Width: 15 mm. Series: 7000. Base number: 7008. Single row, open, bearing steel rings and balls. The carton carries three designation schemes for the same bearing: RHP 7008 C T DUL P4, RHP B-series B7008X2 TA DUL EP7, and Fafnir 2MM9108WI CR DUL. Searchable forms include 7008CTDULP4, 7008-C-T-DUL-P4, 7008C, 7008CTDULP4-1/2PR and 2MM9108WICRDUL.

Decoding the designation

Contact Angle: 15°. All three carton schemes agree: RHP C, RHP B-series X2, and Fafnir 2MM. Cage: machined laminated phenolic, outer-ring guided, rated to 120 °C, from the RHP T and the Fafnir CR positions. Preload: light, from the DUL position. Precision Class: ABEC 7 / ISO P4, confirmed twice as P4 and as RHP EP7. DUL denotes a factory duplex pairing at light preload.

What these specs mean in practice

A 15° contact angle favours speed and radial stiffness over thrust capacity, which is why it is the standard machine tool spindle angle. Limiting Speed: 24,000 rpm. Dynamic Load Rating: 33 kN (7,419 lbf) across the matched pair. Static Load Rating: 28 kN (6,295 lbf) across the matched pair. The machined phenolic cage is light and quiet at speed and suits oil-mist and oil-air lubrication. ABEC 7 tolerances give tighter running accuracy and lower running vibration than standard class. Lubricant: oil.

Quantity and configuration

One bearing — a single half of a factory DUL duplex pair, which is what the -1/2PR marking on the carton records. It mounts as a single bearing, or pairs with a second piece of the same designation.

Fitting notes

Light preload is ground into the ring faces, so clamping the rings solid against the shaft shoulder and housing shoulder sets the preload without shims. Because preload is ground in, this bearing carries no radial internal clearance class. Total width across a full DUL pair: 30 mm.

Interchange guidance

Equivalents at the same envelope, angle, cage and preload: SKF 7008 CD/P4ADGA, FAG B7008-C-T-P4S-UL, NSK 7008CTRDULP4, Fafnir 2MM9108WI-CR-DUL. The 7008 A5 and 7008 E forms are a related size at 25° and carry different thrust and speed figures.