TimkenEH220749Single Cone – 3.7500 in Bore, 2.8750 in Width, 715,000 N Dynamic Load Rating

Product Description

What this part is

Timken EH220749 single cone for inch-series tapered roller bearings, a one-piece inner ring, roller and cage assembly. Bore Diameter: 3.7500 in (95.250 mm). Overall Width: 2.8750 in (73.025 mm). Series: EH220700. Base Number: EH220749. Rolling Elements: Tapered Roller. Number Of Rows: 1. Bore Type: Straight. Item Weight: 10.7 kg (23.5 lb). Design Units: Imperial. GTIN: 053893028880.

Decoding the designation

EH — Timken heavy-duty inch tapered roller series prefix, carried by both halves of the pairing.

220749 — cone number in the EH220700 series, fixing the 3.7500 in bore and the raceway angle.

What these specs mean in practice

Dynamic Load Rating: 715,000 N (161,000 lbf) at 1 million revolutions. Static Load Rating: 906,000 N (204,000 lbf). Dynamic Radial Rating C90: 185,000 N (41,700 lbf). Dynamic Axial Rating Ca90: 101,000 N (22,800 lbf). K Factor: 1.83. G1 Factor: 306. G2 Factor: 26.2. Geometry Factor (Cg): 0.111.

The K factor of 1.83 sets the ratio of radial to thrust capability on this raceway angle, so the bearing carries a heavy radial load while still taking substantial thrust in one direction. Mounting a second cone facing the other way locates the shaft in both directions.

Mounting data

Effective Center Location: -0.97 in (-24.6 mm), the load centre lying inside the cone backface. Max Shaft Fillet Radius: 0.13 in (3.300 mm). Shaft Backing Shoulder Diameter, frontface (da): 4.55 in (115.7 mm). Shaft Backing Shoulder Diameter, backface (db): 4.72 in (120 mm). Cage Location relative to backface (Aa): 0.2 in (5.1 mm). Cage Location relative to frontface (Ab): 0.13 in (3.3 mm). Precision Class: Not specified.

Quantity and configuration

Unit Quantity: 1 Pc. Cone only — inner ring, rollers and cage as one assembly.

Interchange guidance

The matching cup is the Timken EH220710. Searchable variants of this number: EH220749, EH-220749, EH 220749.