Timken74556/74845Tapered Roller Bearing, Single Row – 5.5108 in Bore, 8.4636 in Outside Diameter, 1.875 in Width, Case-Carburized Steel

Product Description

What this part is:

Timken 74556/74845 single-row inch tapered roller bearing, supplied as one cone (74556) and one cup (74845). Bore 5.5108 in (139.974 mm), outside diameter 8.4636 in (214.975 mm), overall width 1.875 in (47.625 mm). Unit Quantity: 2 Pcs (one cone and one cup).

Decoding the designation:

74556 — cone part number: inner ring, rollers and cage, 5.5108 in bore, width 1.875 in.

74845 — cup part number: outer ring, 8.4636 in outside diameter, width 1.375 in.

74000 — Timken series number.

Specifications:

Bore Diameter: 5.5108 in (139.974 mm).

Outside Diameter: 8.4636 in (214.975 mm).

Overall Width: 1.875 in (47.625 mm).

Cone Width (B): 1.875 in (47.625 mm). Cup Width (C): 1.375 in (34.925 mm).

Dynamic Load Rating: 354,000 N (79,500 lbf) at 1 million revolutions.

Static Load Rating: 614,000 N (138,000 lbf).

Dynamic Radial Rating C90: 91,700 N (20,600 lbf) at 90 million revolutions.

Dynamic Axial Rating Ca90: 76,500 N (17,200 lbf) at 90 million revolutions.

e Factor: 0.49. K Factor: 1.2. Y Factor: 1.23. Geometry Factor (Cg): 0.134. G1 Factor: 362.9. G2 Factor: 68.5.

Rolling Elements: Tapered Roller. Number Of Rows: 1. Closure Type: Open. Bearing Material: Case-carburized steel.

Country of Origin: United Kingdom.

Dimensions and mounting:

Effective Center Location: 0.09 in (2.3 mm). Max Shaft Fillet Radius: 0.140 in (3.600 mm). Max Housing Fillet Radius: 0.130 in (3.30 mm). Shaft Backing Shoulder Diameter, frontface (da): 5.98 in (152 mm). Shaft Backing Shoulder Diameter, backface (db): 6.22 in (158 mm). Housing Backing Shoulder Diameter, frontface (Da): 8.23 in (209.00 mm). Housing Backing Shoulder Diameter, backface (Db): 7.72 in (196.09 mm). Cage Location Relative to Backface (Aa): 0.18 in (4.6 mm). Cage Location Relative to Frontface (Ab): 0.1 in (2.5 mm).

Compatibility and replacement:

Cone 74556 mates with cup 74845. MPN Variants: 74556/74845; 74556-74845; 74556 74845; 74845/74556; Timken 74556 cone; Timken 74845 cup.

Frequently asked questions:

What does Timken 74556/74845 include?

One 74556 cone and one 74845 cup.

What are the main dimensions of 74556/74845?

Bore 5.5108 in, outside diameter 8.4636 in, overall width 1.875 in.

What is the dynamic load rating of 74556/74845?

354,000 N (79,500 lbf) at 1 million revolutions; static load rating 614,000 N.