A-2878-I-AI Cone, Tapered Roller Bearing
A-2878-I-AI Cone, Tapered Roller Bearing
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One New Aftermarket Replacement Cone, Tapered Roller Bearing - 2878 Series
This tapered roller bearing cone (inner ring assembly) is a single-row, Type TS bearing in the 2800 series. The cone pairs with a separately purchased cup (outer ring) to form a complete tapered roller bearing assembly capable of handling both radial and axial loads. It is typically mounted in opposing pairs on a shaft and is widely used in agricultural equipment, construction machinery, industrial gearboxes, and vehicle drivetrains.
Specifications
- Bore: 1.375 in (1-3/8 in)
- Cone Width: 0.937 in (15/16 in)
- Max Shaft Fillet Radius: 0.03 in
- Series: 2800 (Type TS - Tapered Single)
- Dynamic Load Rating: 16,400 lb
- Static Load Rating: 18,800 lb
Compatible Applications
The 2878 is a widely used standard inch-series tapered roller bearing cone found across agricultural equipment, construction machinery, industrial gearboxes, and vehicle axle and transmission applications. Verify fitment against your equipment's bearing specification before ordering.
Replaces Part Number(s):
A-2878-I-AI, 2878
Aftermarket Interchange Numbers
Timken 2878, SKF 2878, NTN 2878, Enduro 2878
New aftermarket replacement part - not remanufactured, not used.



