RHP7002CTDUMP4Super Precision Angular Contact Ball Bearing Matched Duplex Pair 15 x 32 x 9 mm 15 Degree Phenolic Cage Medium Preload

Product Description

What this part is

A matched duplex pair of RHP 7002C super-precision angular contact ball bearings, 15 mm bore, 32 mm outside diameter, 9 mm wide each. The 7000 series is the light section of the super-precision angular contact range, used where speed matters more than load capacity.

Decoding the designation

In the RHP scheme 7002 is the ISO 70-series section, C sets the contact angle at 15°, T is a phenolic resin cage, DU marks the pieces as a ground duplex set, M is medium preload and P4 is ABEC 7. The carton also carries the RHP B-series form B7002X2TADUMEP7, which states the same two facts a second way: X2 is 15° and EP7 is ABEC 7.

What these specs mean in practice

A 15° contact angle gives the highest limiting speed and the lowest axial stiffness of the standard angular contact angles. Medium preload sits between light and heavy — stiffer than light, with more heat generation and a lower speed ceiling. Phenolic resin rides the outer-ring land, is light and oil-absorbent, and works to roughly 120 °C. ABEC 7 holds bore, outside diameter and raceway runout close enough for the pair to share load evenly.

Quantity and configuration

2 Pcs, supplied as one matched duplex set. The rings are ground together so the pair reaches the specified medium preload when clamped solid, with no shims and no measurement. Stack height for the pair is 18 mm.

Thrust direction

Each bearing on its own takes thrust in one direction. Back-to-back or face-to-face, the pair takes thrust in both directions; in tandem it takes a larger load in one direction only.

Fitting notes

The V etch across the two outer-ring faces aligns to give the ground arrangement; turning one ring relative to the other changes the preload the set was ground for. At this size the rings are thin and the clamping faces small, so housing shoulder and shaft nut squareness govern the running accuracy achieved.

Interchange guidance

Direct substitutes are an RHP or NSK 7002C duplex pair at P4 and medium preload, the B-series form B7002X2TADUMEP7, and the Fafnir 2MM9102WI-DUM, which is 15° at the same section. A 7002E at 25° is the same 15 x 32 x 9 mm envelope at a different angle — a related size, not an interchange. Light and heavy preload sets of the same number are separate parts.