RHP7206X1TADULEP7Super-Precision Angular Contact Ball Bearing – Straight Bore, 30 mm ID, 62 mm OD, 16 mm Width, Open, Light Preload, Duplex Ground, ABEC 7

Product Description

What this part is

RHP 7206X1TADULEP7 super-precision single-row angular contact ball bearing, 30 mm bore, 62 mm outside diameter, 16 mm width. Steel balls, open on both faces, straight bore, duplex ground to the light preload class.

Decoding the designation

72 is the ISO dimension series and 06 is the bore code — 6 × 5 = 30 mm. DU marks duplex grinding and the L calls light preload. EP7 is RHP’s tolerance class code, equal to ABEC 7 and to the P4 class shown on the alternate carton designation 7206 X1 TA DUL EP7/P4.

What these specs mean in practice

ABEC 7 sets tight limits on bore, outside diameter and running accuracy, which is what a precision spindle needs to hold runout at speed. Light preload removes all internal play while keeping friction and heat generation low, so it is the class chosen where speed matters more than maximum stiffness.

Thrust direction and arrangement

Each row of angular contact balls takes thrust in one direction, toward the high shoulder of the outer ring. Duplex grinding relieves the mating faces so that a set clamps up to the ground preload with no shims. Back-to-back and face-to-face sets locate the shaft in both directions and resist moment load; a tandem set stays one direction and shares the thrust.

Quantity and configuration

Duplex-ground DUL set designation, light preload class, no spacers.

Fitting notes

A duplex set keeps its face marks aligned so that the ground relief produces the intended arrangement and preload. Interference on the shaft and housing seats adds to the ground preload, so those seats are ground to spindle tolerances rather than to nominal 30 mm and 62 mm.

Interchange guidance

The base number is 7206 and the envelope is 30 x 62 x 16 mm. Interchange within this envelope is governed by contact angle, so a candidate substitute matches on the angle code as well as on the duplex arrangement, the light preload class and ABEC 7. A 7206C at 15°, a 7206E at 25° and a plain 7206 at 40° are all this same envelope in different angles and are related sizes to one another.