SKF2210 2RS1 TN92210-2RS1-TN9 Self Aligning Bearing Rubber Sealed 2210 E-2RS1TN9 22102RS1TN9

Product Description

What this part is

SKF 2210 E-2RS1TN9 double-row self-aligning ball bearing, 50 mm bore, 90 mm outside diameter, 23 mm width. Cylindrical bore, contact seals on both faces, glass-fibre reinforced polyamide cage. Mass 0.6 kg.

Decoding the designation

The 22 prefix is the wide dimension series of the self-aligning ball bearing range. The bore code 10 denotes 50 mm, the bore code multiplied by five. E marks the optimised internal design with a larger ball complement and increased load carrying capacity. 2RS1 is a contact seal on each side. TN9 is a ball-centred injection-moulded cage in glass-fibre reinforced PA66. No clearance suffix means normal clearance, CN.

What these specs mean in practice

A self-aligning ball bearing runs two rows of balls on a common spherical outer raceway, so the inner ring, cage and ball complement swivel freely inside the outer ring. That absorbs shaft deflection and housing misalignment without inducing edge load, which is what makes the type standard on long line shafts, conveyor drives and textile machinery. It also has the lowest friction of any rolling bearing type, so it runs cool at speed. Basic dynamic capacity is 22.9 kN, 5150 lbf, and basic static capacity 8.15 kN, 1830 lbf, with a fatigue load limit of 0.42 kN and a limiting speed of 4800 r/min.

Seals and cage

Two contact seals retain the factory grease charge and exclude contamination, making the bearing a sealed-for-life unit with no relubrication provision. The published operating range is –40 to +210 °F. The glass-fibre reinforced PA66 cage is lighter than pressed steel and runs quietly, and its ball-centred form gives generous lubricant passage.

Quantity and configuration

One piece. Complete sealed bearing, cylindrical bore, ready to mount.

Fitting notes

Because the outer raceway is spherical, the outer ring is a clearance or light fit in a housing that permits the ring to settle square. Mounting force is applied to the inner ring face for a shaft press fit. The maximum shaft and housing fillet radius the bearing corner will clear is 1.1 mm. Sealed bearings are mounted cold; the polyamide cage sets an upper working temperature well below that of a steel or brass cage.

Interchange guidance

A 2210 E-2RS1TN9/C3 is a related size: the same envelope and seals at greater than normal internal clearance, which changes running clearance and preload behaviour. A 2210 ETN9 is the open version of the same bearing, so it takes external lubrication rather than a sealed grease charge.