RHP7018CTBSULP6Angular Contact Ball Bearing – 90 mm ID, 140 mm OD, 24 mm Width, Open, 15° Contact Angle, Light Preload, Phenolic Cage, P6 / ABEC 3

Product Description

What this part is

An RHP angular contact ball bearing in the 7018 size, supplied as a single universally ground bearing. Bore: 90 mm. Outside Diameter: 140 mm. Width: 24 mm. Closure: Open. Bore type: Straight. Rolling elements: Ball. Contact Angle: 15°. Cage Type: one-piece machined, inner-ring centred. Cage Material: laminated phenolic resin. Preload: Light (L). Precision Class: P6 (ISO Class 6, ABEC 3, RHP class code EP3). Series: ISO series 10 (70xx). Bearing Material: carbon chrome bearing steel, BS970 534A99/535A99 or SAE 52100.

Decoding the designation

7018 — ISO dimension series 10, bore code 18, giving 90 x 140 x 24 mm.

C — 15° contact angle.

TB — one-piece machined laminated phenolic cage, inner-ring centred.

SU — single universally ground, so two or more identical bearings stack back-to-back, face-to-face or in tandem without shims or spacers.

L — light preload.

P6 — ISO Class 6, ABEC 3, RHP class code EP3.

B7018X2TULEP3 — the RHP B-series form on the same carton, in which X2 reads the angle a second way as 15° and EP3 restates P6.

Load ratings

Dynamic Load Rating Cr: 71.5 kN (71,500 N). Static Load Rating C0r: 69.0 kN (69,000 N). Maximum recommended operating temperature: 120 °C, set by the laminated phenolic cage. Lubricant: Grease or oil.

What these specs mean in practice

A 15° contact angle is the high-speed end of the angular contact range, with less centrifugal ball loading and less heat than a 25° bearing in the same envelope, and proportionally less thrust capacity. Universal grinding is what allows two or more of these bearings to be stacked and produce the light preload class without shims or spacers. Light preload keeps running torque and heat generation down while removing internal play.

Quantity and configuration

Unit Quantity: 1 Pc, a single universally ground bearing. Number of Rows: 1. Light preload is developed when two or more are mounted together and clamped.

Thrust direction

A single-row angular contact ball bearing takes thrust in one direction. A pair mounted back-to-back or face-to-face locates the shaft in both directions; in tandem both rows share thrust in the same single direction.

Mounting data

Shaft abutment diameter d1: 99 mm minimum. Housing abutment diameter D1: 131 mm maximum. Outer ring abutment D2: 134 mm maximum. Chamfer r: 1.5 mm minimum. Chamfer r1: 1.0 mm minimum. Effective load centre a: 27.4 mm. Internal free volume: 49.3 cm³. PCD of lubrication jets: 108.6 mm. Mass: 1.161 kg.

Interchange guidance

The ISO shorthand for this size and angle is 7018 C. The Fafnir-scheme form on the carton is 2M9118WI CR SUL. Same-envelope 7018 bearings at a 25° contact angle, at a medium or heavy preload class, or supplied as a factory duplex set, are related sizes rather than interchanges. Harmonization Code: 8482.10.50.