RHPAngular Contact Ball Bearing – 65 mm ID, 140 mm OD, 33 mm Width, Open, 15° Contact Angle, Machined Phenolic Cage, CN Internal Clearance.

Product Description

What this part is

RHP 7313CTB single-row angular contact ball bearing. Bore Diameter: 65 mm. Outside Diameter: 140 mm. Overall Width: 33 mm. Contact Angle: 15°. Rolling Elements: Ball. Number Of Rows: 1. Bore Type: Straight. Closure Type: Open.

Decoding the designation

7313 — ISO 73 dimension series, bore code 13. Bore 65 mm, outside diameter 140 mm, width 33 mm. The 73 series is the heavy section of the angular contact range, wider and thicker in section than a 72-series bearing of the same bore.

C — 15° contact angle. The same 15° is carried independently by the X2 in the alternative designation B7313X2TEP1 marked on the carton. Contact Angle: 15°.

TB — one-piece machined laminated phenolic cage, centred on the inner ring. Cage Material: Phenolic. Cage Type: Machined one-piece, inner-ring centred.

P0 — standard tolerance class. Precision Class: ABEC 1 / P0.

What these specs mean in practice

A single row of balls runs on raceways offset so that the line of contact sits at 15° to the radial plane. A shallow angle of this kind favours radial stiffness and high speed over thrust capacity, which is why it is paired here with a phenolic cage. Internal Clearance: CN. Series: 7300.

Laminated phenolic is roughly a seventh the density of brass, so cage inertia and the centrifugal load on the cage pockets stay low at speed. The material also holds a film of oil in its own structure. Inner-ring centring keeps the cage located by the faster-moving ring.

Mounting data

Chamfer dimension r min: 2.1 mm. Shaft abutment diameter da: 77 mm min. Housing abutment diameter Da: 128 mm max. Maximum fillet radius on the shaft or housing ra: 2 mm. Because thrust is carried in one direction only, the bearing is located axially against an opposing bearing or against the second piece in this listing, mounted face to face, back to back or in tandem.

Quantity and configuration

Unit Quantity: 2 Pcs. Two individual bearings, ground to the standard tolerance class rather than as a universally matched set.