FAG6018-2RSRDeep Groove Ball Bearing 90x140x24 mm, Two Contact Rubber Seals, 62,000 N Dynamic Rating, Sealed for Life

Product Description

What this part is

A FAG 6018-2RSR single-row deep groove ball bearing — 90 mm bore, 140 mm outside diameter, 24 mm width — with contact rubber seals on both faces. It arrives grease filled and sealed for life, so it is fitted and run without an external lubrication supply. The 6018 is a large, relatively narrow deep groove size used in electric motors, gearboxes and general machinery.

Decoding the designation

6018 – single-row deep groove ball bearing, 90 mm bore, 140 mm OD, 24 mm width
2RSR – two contact rubber seals, one on each face, in the FAG scheme
No clearance suffix, so internal clearance is normal (CN)
Tolerance class P0, equivalent to ABEC 1

What these specs mean in practice

Contact rubber seals rub lightly on the inner ring, which excludes dust, water and washdown spray far better than a steel shield. In a contaminated position the seal, not the steel, decides how long the bearing lasts. The trade-off is friction and a lower speed ceiling: the 2,500 rpm limiting speed reflects the sealed configuration, whereas an open 6018 in the same envelope runs considerably faster. The 62,000 N dynamic rating sets fatigue life under rotating load; the 49,500 N static rating governs permissible load when the shaft is stopped or shock loaded. The 120 °C ceiling is a seal and grease limit, not a steel limit.

Published ratings and mounting data

Bore: 90 mm (3.5433 in)
Outside diameter: 140 mm (5.5118 in)
Width: 24 mm (0.9449 in)
Rows: 1
Closure: two contact rubber seals
Dynamic load rating (Cr): 62,000 N
Static load rating (C0r): 49,500 N
Limiting speed: 2,500 rpm
Operating temperature: –30 °C to 120 °C (–22 °F to 248 °F)
Internal clearance: CN (normal)
Tolerance class: P0 (ABEC 1)
Mass: approx. 1.22 kg (2.69 lb)
Lubrication: grease filled, sealed for life

Quantity and configuration

Sold as 1 Pc, one complete bearing sealed on both faces. No snap ring, spacer or lock nut is included.

Fitting notes

Mounting force is applied to the ring being fitted so that no load passes through the balls, and the seals are not a press surface. Induction heating suits a bearing of this diameter, held below the 120 °C seal limit. No grease charge is needed on installation and a relubrication port in the housing has no path into the bearing.

Interchange guidance

The direct equivalent is a double-sealed 6018 in the 90 x 140 x 24 mm envelope: SKF 6018-2RS1, NSK 6018DDU, NTN 6018LLU, Koyo 6018-2RS, Timken 6018-2RS. A shielded 6018-2Z or 6018ZZ shares the envelope but is non-contact and seals less effectively, and an open 6018 has no closure at all, so both are related versions rather than equivalents.