Timken385A-3/382-3Tapered Roller Bearing Cone and Cup Set – 2.0000 in Bore, 3.8750 in Outside Diameter, 0.8268 in Assembled Width, Class 3 Precision

Product Description

What this part is

Timken 385A-3/382-3 inch tapered roller bearing, supplied as a matched cone and cup. Cone Part Number: 385A. Cup Part Number: 382. Series: 385. Base Number: 385A. Design Units: Imperial. Rolling Elements: Tapered Roller. Number Of Rows: 1. Bore Type: Straight. Bearing Material: Case-Carburized Steel.

Decoding the designation

385A — the cone, the inner ring with its roller and cage assembly, 2.0000 in bore.

382 — the cup, the outer race that carries the matching raceway, 3.8750 in outside diameter.

-3 — Precision Class 3, also written *3 and #3. Tighter running tolerance, lower running vibration and closer shaft location than standard class.

What these specs mean in practice

Bore Diameter: 2.0000 in (50.8 mm). Outside Diameter: 3.8750 in (98.425 mm). Overall Width: 0.8268 in (21.001 mm) assembled. Precision Class: Class 3. Item Weight: 0.70 kg (1.60 lb).

Dynamic Load Rating: 108,000 N at one million revolutions. Static Load Rating: 107,000 N. Dynamic Radial Rating at 90 million revolutions: 28,000 N. Dynamic Axial Rating at 90 million revolutions: 16,900 N.

K Factor: 1.65. e Factor: 0.35. Y Factor: 1.69. A K factor of 1.65 places this set in the general-purpose range of the inch taper line, taking radial load with useful single-direction thrust capacity through the roller taper.

G1 Factor: 42. G2 Factor: 15.7. Geometry Factor (Cg): 0.0859.

Mounting data

Cone Width: 0.8640 in. Cup Width: 0.7018 in. Effective Center Location: -0.12 in, inside the cone backface.

Shaft Backing Shoulder Diameter, frontface: 2.36 in. Shaft Backing Shoulder Diameter, backface: 2.40 in. Housing Backing Shoulder Diameter, frontface: 3.66 in. Housing Backing Shoulder Diameter, backface: 3.54 in.

Maximum Shaft Fillet Radius cleared by the bearing corner: 0.09 in. Maximum Housing Fillet Radius cleared by the bearing corner: 0.03 in. Cage Location relative to backface: 0.03 in. Cage Location relative to frontface: 0.11 in.

Quantity and configuration

Unit Quantity: 2 Pc — one 385A cone and one 382 cup, the complete single-row tapered set. Mounted in opposing pairs on a shaft for two-point location.

Interchange guidance

385A and 382 are industry-standard inch taper numbers, so the same designation carries across makers. SKF 385A/382. FAG K-385-A/K-382. NSK 385A/382. NTN 4T-385A/4T-382. Koyo 385A/382. Fersa 385A/382. BCA/Bower 385A/382. PEER 385A/382.

Searchable designation variants: 385A-3/382-3, 385A*3, 382*3, 385A#3, 382#3, 385-A 3, 385A/382, Class 3 precision.