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.