SNR21310VSpherical Roller Bearing – Straight Bore, 50 mm ID, 110 mm OD, 27 mm Width, Open, CN Internal clearance

Product Description

What this part is

SNR 21310V double-row spherical roller bearing, ISO 213 light series, 50 x 110 x 27 mm. Bore: 50 mm. Outside Diameter: 110 mm. Overall Width: 27 mm. Rolling Elements: Spherical Roller. Number Of Rows: 2. Bore Type: Straight. Closure Type: Open. Series: 213. Part Number: 21310V. Base Number: 21310. Design Units: Metric. Bearing Material: Chrome bearing steel rings and rollers.

Decoding the designation

Base Number: 21310, setting the 50 x 110 x 27 mm envelope. Design Generation: V, the SNR conventional design that precedes the Ultage range — symmetrical rollers and no central guide rib on the inner ring. Bore Type: Straight. Internal Clearance: CN, the standard radial clearance group for a non-preloaded double-row spherical roller. Searchable variants of the number: 21310V, 21310 V, 21310-V, 21310.V, 21310C, 21310J, 21310CC, 21310CJ, 21310CCJ.

Ratings and running limits

Dynamic Load Rating: 142 kN. Static Load Rating: 134 kN. Fatigue Load Limit: 16.3 kN. Reference Speed: 5400 rpm. Limiting Speed: 7600 rpm. Precision Class: P0, ABEC 1. Operating Temperature Range: –40 °C to +200 °C. Item Weight: 1.251 kg (2.76 lb). Harmonization Code: 8482.30.00.80.

Cage and internal design

Cage Type: Pressed. Cage Material: Pressed steel. Permissible Misalignment: 0.5° at normal load. The two roller rows share one concave outer-ring raceway, so the inner ring and roller set swivel within the outer ring and absorb shaft deflection and housing misalignment while carrying heavy radial load with an axial component in either direction.

What these specs mean in practice

The 213 light section runs a slimmer outer ring than the 223 series on the same shaft, so it fits a smaller housing bore. CN clearance suits an interference fit on a straight shaft seat with a normal temperature gradient across the bearing. Maximum Operating Temperature: 200 °C.

Mounting dimensions

Inner Ring Outside Diameter (d2): 66.8 mm. Outer Ring Inside Diameter (D1): 92.4 mm. Minimum Bearing Fillet Radius (rs min): 2 mm. Maximum Abutment Fillet Radius (ra max): 2 mm. Minimum Shaft Shoulder Diameter (da min): 61 mm. Maximum Housing Shoulder Diameter (Da max): 99 mm. Calculation Factors: e 0.25, Y0 2.65, Y1 2.71, Y2 4.04.

Quantity and configuration

Unit Quantity: 1 Pc. One complete bearing ships as a single assembled unit — outer ring, inner ring, two rows of spherical rollers and the pressed steel cages.

Interchange guidance

GTIN: 3413520079239. Manufacturer Part Number: 21310V. On the same 50 x 110 x 27 mm envelope and the same CN clearance class: SKF 21310 E, FAG 21310-E1-XL, NTN 21310, NSK 21310, Koyo 21310R. Interchange holds on envelope and clearance class; the load ratings of the later E and Ultage executions differ from the conventional V design.