NSK33275/33462DTapered Roller Bearing Cone and Double Cup Set 2-3/4 in Bore x 4-5/8 in OD Inch Series

Product Description

What this part is

An NSK 33275 tapered roller bearing cone with a 33462D double cup, inch series. Two rows of tapered rollers run in a single outer ring. Bore: 2-3/4 in (69.850 mm). Outside Diameter: 4-5/8 in (117.475 mm). Total Width: 2.6249 in (66.672 mm). Outer Ring Width: 2.1250 in (53.975 mm). Number Of Rows: 2. Rolling Elements: tapered rollers. Bore Type: straight. Design Units: Inch. Series: 332xx inch series.

Decoding the designation

33275 is the cone number and carries the 2-3/4 in bore. 33462 is the cup number and carries the 4-5/8 in outside diameter. The D marks a double cup — one outer ring machined with two raceways. Timken’s catalogue form of the same double cup is 33462DC, and the searchable variants of the pair are 33275/33462D, 33275-33462D, 33275 33462D and 33275/33462DC.

Published specifications

Dynamic Radial Load Rating (C1, 1 million revolutions, ISO): 54,200 lbf (241,000 N). Dynamic Radial Load Rating (C90): 8,060 lbf (35,900 N). Dynamic Radial Load Rating, two-row (C90-2row): 14,000 lbf (62,400 N). Dynamic Axial Rating (Ca90): 6,020 lbf (26,800 N). Static Radial Load Rating (C0): 44,300 lbf (197,000 N). Item Weight: 6.1 lb (2.766 kg).

Mounting dimensions and factors

Maximum Shaft Fillet Radius: 0.140 in (3.6 mm). Maximum Housing Fillet Radius: 0.03 in (0.8 mm). Shaft Backing Shoulder Diameter, backface (db): 3.35 in (85 mm). Housing Backing Shoulder Diameter, frontface (Da): 4.45 in (112.01 mm). e Factor: 0.44. K Factor: 1.34. Y1 Factor: 1.55. Y2 Factor: 2.31. Geometry Factor (Cg): 0.116.

What these specs mean in practice

A double cup puts both outer raceways in a single ring, so one pressed-in cup serves two rows of rollers facing opposite directions. That arrangement takes thrust in both directions and carries a moment load inside a single housing bore. Tapered rollers give line contact, so radial and combined load capacity is high for the envelope. The K factor of 1.34 sets the thrust-to-radial ratio the rows share, and the e factor of 0.44 is the threshold above which the applied thrust starts to govern the load calculation.

Quantity and configuration

1 Set, comprising the 33275 cone and the 33462D double cup.

Interchange guidance

Cone and cup halves are matched by raceway angle and roller path, so the 33275 pairs with the 33462 raceway and the two numbers identify the set together. A single-width 33462 cup shares the raceway geometry and carries one row, making it a related size rather than an interchange.