Timken497-3/493D-3/X3S-497Tapered Roller Bearing Assembly — Two-Row, 3.3750 in (85.725 mm) Bore, 5.3750 in (136.525 mm) OD, 2.1250 in Double Cup Width, Class 3

Product Description

What this part is

Timken 497-3/493D-3/X3S-497 is a two-row Class 3 tapered roller bearing assembly with a 3-3/8 in bore and a 5-3/8 in outside diameter. A one-piece double cup takes two single cones, with a cone spacer between them.

Decoding the designation

497-3 — the cone: inner ring, roller set and cage, 3-3/8 in bore, Class 3. Two are in the set.

493D-3 — double cup, Class 3. One outer ring carrying both raceways, 5-3/8 in OD, taking two 497 cones.

X3S-497 — cone spacer sized for the 497 cone pair.

-3 — Timken Class 3 precision: tighter tolerance and lower running vibration than standard Class 4 industrial parts.

What these specs mean in practice

Bore Diameter: 3.3750 in (85.725 mm). Outside Diameter: 5.3750 in (136.525 mm). Cup Width: 2.1250 in. Cone Width: 1.1720 in. Precision Class: Class 3. Rolling Elements: Tapered Roller. Number Of Rows: 2. Bearing Material: Case-Hardened Steel. Series: 495. The two opposed rows carry combined radial load and thrust in both directions from a single bearing position.

Mounting data

Cone Backface “To Clear” Radius: 0.14 in. Cone Frontface Backing Diameter: 3.43 in. Cup Backface “To Clear” Radius: 0.03 in. Cup Frontface Backing Diameter: 5.16 in. Cage-Cone Frontface Clearance: 0.12 in. Cage-Cone Backface Clearance: 0.07 in. Effective Center Location: -0.03 in.

Quantity and configuration

Unit Quantity: 4 Pcs. Two 497-3 cones, one 493D-3 double cup and one X3S-497 cone spacer, new old stock.

Interchange guidance

497 and 493 are industry-standard inch tapered roller numbers. The 497 cone mates with the 493 single cup and the 493D double cup. Harmonization Code: 8482.2.