Timken792B/797Tapered Roller Bearing Cone and Flanged Cup Set – 5.1181 in Bore, 8.1250 in Outside Diameter, 378,000 N Dynamic Load Rating

Product Description

What this part is

Timken 797/792-B inch tapered roller bearing set, a TSF assembly pairing the 797 single cone with the 792-B single flanged cup. Bore Diameter: 5.1181 in (130 mm). Outside Diameter: 8.1250 in (206.375 mm). Cone Width: 1.8750 in (47.625 mm). Cup Width: 1.3750 in (34.925 mm). Rolling Elements: Tapered Roller. Number Of Rows: 1. Bore Type: Straight. Bearing Material: Case-Carburized Steel. Item Weight: 12.535 kg (27.64 lb) cone and 6.1 kg (13.5 lb) cup. Design Units: Imperial.

Decoding the designation

797 — the cone half: inner ring, rollers and cage in one assembly, 5.1181 in bore.

792-B — the cup half. The B marks a flanged outer ring, a distinct part from the plain 792.

What these specs mean in practice

Dynamic Load Rating: 378,000 N (85,000 lbf) at 1 million revolutions. Static Load Rating: 593,000 N (133,000 lbf). Dynamic Radial Rating C90: 98,000 N (22,000 lbf). Dynamic Axial Rating Ca90: 77,000 N (17,300 lbf). K Factor: 1.27. e Factor: 0.46. Y Factor: 1.31. G1 Factor: 326.4. G2 Factor: 62. Geometry Factor (Cg): 0.127 for the cone and 0.124 for the cup.

Outer Ring Flange Outside Diameter (D1): 8.4336 in (214.213 mm). Outer Ring Flange Width (C2): 0.3125 in (7.938 mm). The flange backs the cup against the housing face, so the housing can be bored straight through and both bores stay in line. That also sets the seal square to the shaft.

Mounting data

Effective Center Location: -0.07 in (-1.8 mm), the load centre lying just inside the cone backface. 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): 5.67 in (144 mm). Shaft Backing Shoulder Diameter, backface (db): 5.94 in (151 mm). Housing Backing Shoulder Diameter, frontface (Da): 7.83 in (198.12 mm). Cage Location relative to backface (Aa): 0.18 in (4.6 mm). Cage Location relative to frontface (Ab): 0.16 in (4.1 mm). Precision Class: Not specified.

Quantity and configuration

Unit Quantity: 2 Pcs. One 797 cone and one 792-B flanged cup, supplied together as the matched set.

Interchange guidance

Searchable variants of this designation: 792B/797, 792-B/797, 797/792-B, 792 B 797.