RHP7013CTP0Angular Contact Ball Bearing 65x100x18 mm, 15° Contact Angle, Phenolic Cage, Normal Class

Product Description

What this part is

A single-row angular contact ball bearing from the RHP Super Precision range, ISO dimension series 10, with a 65 mm bore, 100 mm outside diameter and 18 mm width. Because a single-row angular contact bearing carries thrust in one direction only, bearings of this type are always installed against an opposing bearing — two opposed bearings, or a larger multiple set.

Decoding the designation

70 – ISO dimension series 10, the standard machine-tool spindle series.
13 – bore reference, 65 mm.
C – 15° contact angle. RHP offers 15° and 25° as its preferred angles.
T – laminated phenolic resin cage, outer-ring guided. This is the standard RHP Super Precision cage.
P0 – normal (standard) tolerance class, not one of the super-precision grades.

Why P0 matters here

RHP’s precision grades run P4, P3 and P2, equal to ABEC 7, an intermediate grade, and ABEC 9 respectively, and to ISO Class 4 through Class 2. This bearing is marked P0, which is normal class — it is a standard-tolerance bearing built with the super-precision family’s 15° geometry and phenolic cage rather than a Class 4 or better spindle bearing. If your spindle rebuild specifies P4 or ABEC 7, this part does not meet it. If you need the 15° angle and the quiet, low-heat phenolic cage without paying for super-precision tolerances, it does.

What these specs mean in practice

A 15° contact angle sits the ball contact closer to the radial plane. That trades axial load capacity and axial stiffness away in exchange for higher speed capability and lower heat generation — the right choice for high-rpm, lightly thrust-loaded spindle positions. A 25° bearing reverses that trade.

The laminated phenolic cage is the reason this design runs quietly and cools well: it is light, it is outer-ring guided so it stays stable at speed, and it holds oil. Its limit is temperature — RHP’s maximum recommended operating temperature for phenolic-caged bearings is 120°C. Above that, consult the manufacturer.

Ring and ball material is a through-hardened carbon chrome bearing steel to BS970 534A99/535A99, equivalent to SAE 52100.

Quantity and configuration

This is a single bearing. It carries no universal-grinding or preload suffix (no SUL, DUL, L, M or H), so it is not face-ground to give a controlled preload when clamped against a partner. Pairing two P0 singles back-to-back will not produce a defined preload — you would need spacers ground to suit, or a universally ground pair.

Fitting notes

RHP Super Precision bearings are marked at the high point of radial runout — a small circle or burnished spot on the inner ring face, and a ‘V’ line on the outer ring OD. Align those marks with each other and oppose them to the shaft and housing eccentricities to minimise assembled runout. The ‘V’ on the outer ring also shows the direction of the contact angle, so it tells you which way the bearing takes thrust — check it before pressing anything.

Interchange guidance

RHP became part of the NSK Group, so current-production equivalents are sold under NSK numbering; searches for obsolete RHP spindle bearings should include NSK. The carton also carries B7013X2TEP1, an older RHP-scheme designation for the same envelope, and it is retained here as a cross-reference for anyone matching to a legacy drawing or parts list. Same-envelope bearings from other makers are designated 7013C (15°) or 7013A/AC (25°) — confirm the contact angle scheme before substituting, because the same-looking suffix letter means different angles across brands.

Published ratings and mounting data

Boundary dimensions, contact angle, cage type, precision class and the 120°C phenolic-cage temperature limit are taken from NSK’s RHP Super Precision Angular Contact Ball Bearings catalogue. Per-part basic dynamic and static load ratings and limiting speeds are published only in that catalogue’s numeric bearing tables, which are not reproducible from the sections available to us, so those cells are deliberately left blank rather than filled from a distributor mirror. Ask and we will confirm against the printed table.