Timken469/452DCClass 3 Precision TDO Two-Row Tapered Roller Bearing – 2-1/4 in Bore, 4.25 in OD, 2.5625 in Width, Case-Carburized Steel

Product Description

What this part is:

Timken 469/452DC is a TDO (Tapered Double Outer) two-row tapered roller bearing assembly: two 469 cones running in one 452DC double cup. DC marks a double cup, a one-piece outer ring with two raceways that seats two cones. Series: 455. Design Units: imperial. Precision Class: Timken Class 3, marked -3 and #3 on both halves.

Decoding the designation:

469 — the cone number.

452DC — the double cup number; Timken designates this assembly 469/452DC.

-3 / #3 — Timken Class 3, with tighter bore, outside diameter, width and running-accuracy tolerances than standard tolerance, giving lower radial and axial runout and less vibration.

Specifications:

Bore, d: 2 1/4 in (57.150 mm). Outside Diameter, D: 4.25 in (107.95 mm). Assembly Width, T: 2.5625 in (65.088 mm). Outer Ring Width, C: 2.1250 in (53.975 mm). Inner Ring Width, B: 1.1542 in (29.317 mm). Weight: 5.38 lb (2.442 kg). Dynamic Load Rating, C1: 62,900 lbf (280,000 N). Dynamic Load Rating, C90, two-row assembly: 16,300 lbf (72,600 N). Dynamic Load Rating, C90, per row: 9,370 lbf (41,700 N). Dynamic Thrust Rating, Ca90: 5,380 lbf (23,900 N). Bearing Factors: e 0.34; K 1.74; Y1 2.01; Y2 3; Cg 0.0946. Bearing Material: Case-carburized alloy steel with ground raceways. Closure Type: Open. Bore Type: Straight. Rolling Elements: Tapered rollers. Number Of Rows: 2.

Dimensions and mounting:

Housing backing diameter, Da: 3.96 in (100.58 mm). Shaft backing diameter, db: 2.83 in (72 mm). Maximum shaft fillet radius: 0.14 in. Maximum housing fillet radius: 0.03 in. Cage location, Aa: 0.07 in. Effective centre location: –0.28 in, inside the cone backface. A TDO takes thrust in both directions.

Compatibility and replacement:

Cone 469 mates cup 452 (single) and 452DC (double), both 4.25 in OD. Related sizes on the same 4.25 in outside diameter with different bores: Timken 455/452D, 458/452D, 464/452D and 467/452D. MPN Variants: 469/452DC, 469-452DC, 469 452DC, 469-3/452DC-3, 469-3, 469#3, 469*3, 452DC-3, 452DC#3, 452DC.

Frequently asked questions:

What type of bearing is the Timken 469/452DC?

It is a TDO (Tapered Double Outer) two-row tapered roller bearing assembly with two 469 cones in one 452DC double cup, Series 455.

What are its main dimensions and ratings?

Bore is 2 1/4 in (57.150 mm), Outside Diameter is 4.25 in (107.95 mm) and Assembly Width is 2.5625 in (65.088 mm). Dynamic Load Rating C1 is 62,900 lbf (280,000 N) and Dynamic Thrust Rating Ca90 is 5,380 lbf (23,900 N).

What does the -3 mean?

-3 and #3 mark Timken Class 3 precision on both halves, with tighter bore, outside diameter, width and running-accuracy tolerances than standard tolerance.