RHP7206CTDULP4Super Precision Angular Contact Ball Bearing Matched Duplex Pair 30 x 62 x 16 mm 15 Degree Phenolic Cage Light Preload

Product Description

What this part is

A matched duplex pair of RHP 7206C super-precision angular contact ball bearings, 30 mm bore, 62 mm outside diameter, 16 mm wide each. The 7200 series is the medium section of the super-precision angular contact range and the common spindle size for mid-sized machine tools.

Decoding the designation

In the RHP scheme 7206 is the ISO 72-series section, C sets the contact angle at 15°, T is a phenolic resin cage, DU marks the pieces as a ground duplex set, L is light preload and P4 is ABEC 7. The RHP B-series form of the same bearing is B7206X2TADULEP7, in which X2 reads the angle a second way as 15° and EP7 restates the ABEC 7 class.

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. Light preload keeps running torque and heat generation down and leaves the most speed headroom. Phenolic resin rides the outer-ring land, is light and oil-absorbent, and works to about 120 °C. ABEC 7 holds bore, outside diameter and raceway runout close enough that a stacked set shares load evenly.

Quantity and configuration

2 Pcs, supplied as one matched duplex set. The rings are ground together so the pair reaches the specified light preload when clamped solid. Stack height for the pair is 32 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. The rings clamp solid against the housing shoulder and shaft nut, so seat squareness governs the running accuracy delivered.

Interchange guidance

Direct substitutes are an RHP or NSK 7206C duplex pair at P4 and light preload, and the B-series form B7206X2TADULEP7. A 7206E at 25° or 7206A at 30° is the same 30 x 62 x 16 mm envelope at a different angle — a related size, not an interchange. Medium and heavy preload sets of the same number are separate parts.