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Central Surplus Bearing Finder
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2 in stock
FAG K78225/K78551 tapered roller bearing cone and cup set, 57.150 mm (2.25 in) bore, 140.030 mm OD, 36.513 mm width, 30° contact angle, inch series.
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| MFR / Brand | FAG |
|---|---|
| Model | K78225/K78551 |
| Bearing Type | Tapered Roller Bearing Assembly |
| ID | 2.2500 in (57.150 mm) |
| OD | 5.5130 in (140.030 mm) |
| Width | 1.4375 in (36.513 mm) |
| Industry Terms | tapered roller bearing, cone and cup set, inch taper bearing, 78000 series |
|---|---|
| Common Misspellings | K78225-K78551, 78225-78551, K78225 K78551 |
| Application Types | Gearboxes, axles, heavy equipment wheel ends, industrial drives |
| Total Width | 1.4375 in (36.513 mm) |
| Mpn Variants | K78225/K78551, K-78225/K-78551, K78225, K78551, 78225/78551 |
| Compatible With Replaces | Timken 78225/78551 (ABMA inch interchange) |
| Additional Attributes | Cup width 23.52 mm; cup mass 0.93 kg; housing shoulder 117 mm min / 132.5 mm; max housing fillet radius 2.3 mm; cup backface chamfer 2.3 mm |
| Series | 78000 |
| Rolling Elements | Tapered Roller |
| Number Of Rows | 1 |
| Contact Angle | 30° |
| Design Units | Imperial |
| Cross Reference 1 | Timken 78225/78551 |
|---|---|
| Cross Reference 2 | NTN 4T-78225/78551 |
| Cross Reference 3 | Koyo 78225/78551 |
| Cross Reference 4 | SKF 78225/78551 |
FAG K78225/K78551 inch-series single-row tapered roller bearing set: one K78225 cone (inner ring with rollers and cage) and one K78551 cup (outer ring), sold as one set. Bore 57.150 mm (2.2500 in), outside diameter 140.030 mm (5.5130 in), total width 36.513 mm (1.4375 in).
K — FAG prefix for inch-dimension tapered roller bearing components to ABMA numbering.
78225 — cone, 78000 series, 2.2500 in bore.
78551 — cup, 78000 series, 5.5130 in outside diameter.
Bore Diameter: 57.150 mm (2.2500 in). Outside Diameter: 140.030 mm (5.5130 in). Total Width: 36.513 mm (1.4375 in). Cup Width: 23.52 mm. Contact Angle: 30°. Number Of Rows: 1. Rolling Elements: Tapered Roller. Series: 78000. Design Units: Imperial. Cup Weight: 0.93 kg (2.05 lb). Unit Quantity: 1 set (1 cone + 1 cup). Country of Origin: Germany.
Housing shoulder diameter: 117 mm minimum (cup backface) and 132.5 mm (cup frontface). Maximum housing fillet radius: 2.3 mm. Cup backface chamfer: 2.3 mm minimum. Cone K78225 mates with cup K78551.
Related designations: Timken 78225/78551, NTN 4T-78225/78551, Koyo 78225/78551, SKF 78225/78551. All share the 57.150 x 140.030 x 36.513 mm envelope. Also written K78225/K78551, K-78225/K-78551, K78225, K78551 and 78225/78551.
What are the dimensions of the FAG K78225/K78551?Bore 57.150 mm (2.2500 in), outside diameter 140.030 mm (5.5130 in), total width 36.513 mm (1.4375 in).
What does the set contain?One K78225 cone and one K78551 cup.
What is the contact angle?30°, from the K78551 cup.
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