RHP7013ETSUMP4Super-Precision Angular Contact Ball Bearing 65x100x18 mm 25° ABEC 7 Medium Preload Phenolic Cage

Product Description

What this part is

An RHP 7013ETSUMP4 super-precision single-row angular contact ball bearing, 65 mm bore by 100 mm outside diameter by 18 mm wide. The 7013 designation is the ISO 70-series thin-section angular contact envelope. It is a spindle bearing for machine tools, grinding heads and precision high-speed shafts.

Decoding the designation

7013 — single-row angular contact ball bearing, 65 x 100 x 18 mmE — 25° contact angle in the RHP schemeT — phenolic laminated-fabric cageSU — single universally groundM — medium preloadP4 — ABEC 7 precision class

What these specs mean in practice

A 25° contact angle gives high thrust capacity and high axial stiffness while still permitting fast running, which is what a milling or drilling spindle needs when the cut loads the shaft along its axis as well as across it.

The 70-series section is slim for its bore, so the bearing fits spindle housings where radial space is tight and where a stack of several bearings has to sit within a short nose length.

Universal grinding means the faces are finished so that units of this designation pair up at a defined medium preload in back-to-back, face-to-face or tandem arrangement without shimming. Medium preload buys stiffness and running accuracy and runs warmer than light preload. The phenolic cage keeps friction and cage mass low, raising the speed ceiling relative to machined brass, and it belongs in oil-mist, oil-air or light-grease lubrication rather than hot heavily loaded service.

Published specifications

Bore: 65 mmOutside diameter: 100 mmWidth: 18 mmRows: 1Contact angle: 25°Precision class: ABEC 7 / ISO P4Preload: mediumCage: phenolicClosure: open

Quantity and configuration

This listing supplies one bearing. Building a matched pair or triplet requires additional bearings of the same designation. Spacer rings, lock nuts and housings are not included.

Fitting notes

The high shoulder on the outer ring marks the contact angle direction and therefore the arrangement. Back-to-back carries moment load and is the usual spindle choice; face-to-face tolerates slight misalignment; tandem doubles thrust capacity in one direction. Shaft and housing seats held to ISO IT4 roundness and cylindricity preserve the ABEC 7 running accuracy.

Interchange guidance

Genuine equivalents are 7013-envelope super-precision bearings at 25°, medium preload and P4 class from other makers, including the RHP/NSK B7013X3TSUMEP7 form of the same specification. Same-envelope 7013 bearings at 15° or 40°, at light or heavy preload, or at P0 or P5 class are different parts.