NSK7013CTYDULPA7Super Precision Angular Contact Ball Bearing 65x100x18 mm, 15° Contact Angle, Light Preload, Slim Section

Product Description

What this part is

A single super-precision angular contact ball bearing in the 65 mm bore × 100 mm outside diameter × 18 mm width envelope, the ISO 7013 size. Single row, universally ground so it can be matched with a like bearing.

Decoding the designation

In the NSK super-precision scheme C is a 15° contact angle, distinct from A at 30° and A5 at 25°, so a 7013C and a 7013A5 are different bearings sharing one envelope. SUL is a single universally ground bearing set to light preload. PA7 is the NSK class marking carried on the carton.

What these specs mean in practice

A 15° contact angle carries more radial load and runs faster than a 25° or 30° bearing of the same size, and carries correspondingly less thrust. Light preload removes internal play and fixes the contact angle while adding the least heat of the three preload grades, which keeps axial position and runout repeatable without penalising speed. At 18 mm wide on a 65 mm bore this is a slim-section spindle bearing from the 70 dimension series, specified where axial space in the housing is short.

Thrust direction

A single-row angular contact bearing carries radial load together with thrust in one direction only. Axial location in both directions comes from mounting a second bearing opposed to this one.

Quantity and configuration

1 Pc. One single universally ground bearing at light preload, supplied loose without a mating bearing, spacers, locknut or housing.

Fitting notes

Universal grinding means any two bearings of the same designation and preload class stack back-to-back, face-to-face or in tandem and arrive at the specified light preload without shimming or hand grinding. Mounting is against a square, clean shoulder, and the preload class is only realised when the outer ring seats fully in the housing bore.

Interchange guidance

NSK acquired RHP and continued its numbering, so the direct counterpart designation is RHP 7013CTSULP4, a genuine same-spec equivalent in the same 65 × 100 × 18 mm envelope at the same angle and preload. The Fafnir-scheme equivalent is Timken 2MM9113WI CR UL, the 2MM prefix likewise denoting 15°. A 7013A5 at 25°, or a medium or heavy preload version, is a related size rather than a substitution.