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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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1 in stock
Tapered roller bearing single cup, 8.4636 in outside diameter, 1.3750 in width, case-carburized steel, 74000 inch series, e 0.49 and Y 1.23.
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| MFR / Brand | Timken |
|---|---|
| MPN | 74845 |
| Model | 74-845 |
| Bearing Type | Tapered Roller Bearing Cup |
| OD | 8.4636 in |
| Series | 74000 |
|---|---|
| Base Number | 74845 |
| Overall Width | 1.3750 in |
| Mpn Variants | 74845, 74-845, 74 845, Timken 74845 cup |
| Compatible With Replaces | Timken cones 74500, 74550, 74556 |
| Precision Class | Not specified |
| Additional Attributes | e Factor: 0.49; Y Factor: 1.23; Geometry Factor (Cg): 0.134 |
| Item Weight | 5.80 kg (12.90 lb) |
| Harmonization Code | 8482.20.00 |
| Cup Part Number | 74845 |
| Design Units | Imperial |
| Bearing Material | Case-carburized steel |
| Cup Width | 1.3750 in |
| Cup Backface To Clear Radius | 0.13 in |
| Cup Frontface Backing Diameter | 8.23 in |
| Cross Reference 1 | SKF 74845 |
|---|---|
| Cross Reference 2 | NTN 74845 |
| Cross Reference 3 | Koyo 74845 |
| Cross Reference 4 | NSK 74845 |
| Cross Reference 5 | FAG 74845 |
| Cross Reference 6 | Bower / BCA 74845 |
| Cross Reference 7 | Fersa 74845 |
| Cross Reference 8 | Timken 74850-B - flanged cup, same taper |
| Cross Reference 9 | Timken 74856 - OD 8.5625 in, same taper |
Timken 74845 tapered roller bearing single cup, the outer ring of a single-row inch tapered roller bearing in the Timken 74000 series. Outside Diameter: 8.4636 in (214.975 mm). Overall Width: 1.3750 in (34.925 mm). Bearing Material: Case-carburized steel. Item Weight: 5.80 kg (12.90 lb). Unit Quantity: 1 Pc.
74845 — Timken inch cup number, the outer ring half of the bearing, matched in the Timken catalogue to the 74500, 74550 and 74556 cones.
74000 — Series: the inch tapered roller family covering this raceway angle at an 8.4636 in cup outside diameter.
e Factor: 0.49. Y Factor: 1.23. Geometry Factor (Cg): 0.134. The e factor is the thrust-to-radial load ratio above which the thrust component governs bearing life; the Y factor converts that thrust into an equivalent radial load. Together they size the mounted bearing against a real combined load case.
Case-carburized steel gives a hard raceway over a tough core, which is what lets an inch tapered roller cup take shock loading without through-cracking.
Max Housing Fillet Radius: 0.130 in (3.30 mm). Housing Backing Shoulder Diameter, frontface (Da): 8.23 in (209.00 mm). Housing Backing Shoulder Diameter, backface (Db): 7.72 in (196.09 mm). The cup seats in the housing bore and abuts the housing shoulder; the fillet figure is the largest housing corner radius the cup corner will clear.
Cup only. Unit Quantity: 1 Pc. Matching cones in the Timken catalogue: 74500, 74550 and 74556.
74845 is an industry-standard inch tapered roller cup number, carried under the same designation by SKF, NTN, Koyo, NSK, FAG, Bower/BCA and Fersa. Timken 74850-B is the flanged cup on the same taper, and Timken 74856 runs the same taper at an 8.5625 in outside diameter; both are related sizes for a different housing bore rather than matching parts.
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A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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Our team can locate, cross-reference, and source all parts.
Our team can locate, cross-reference, and source all parts.
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