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TS (Single Row Tapered Roller Bearings) (Imperial) 25578-25518

TS (Single Row Tapered Roller Bearings) (Imperial) 25578-25518

The 25578-25518 is a single-row tapered roller bearing with a 1.6875″ bore and 3.2273″ outer diameter, crafted from sturdy chrome steel. It manages combined loads up to 20300 lbf radially and 3020 lbf in thrust, suitable for demanding applications.

Its open design allows for easy lubrication, while the steel cage ensures durability. The bearing operates smoothly in temperatures ranging from -30°C to 110°C, making it versatile for various conditions.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for heavy-duty machinery, gearboxes, or automotive applications where combined loads are common.

Weighing 1.2 lb, it balances strength and manageability. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

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Product Parameters

  • Part Number 25578-25518
  • Brand TFL
  • Interchangeable Timken
  • Size 1.6875" x 3.2273" x 0.9401"
  • Bore Dia 1.6875"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.2273"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.7525"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 0.9401"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.09"
  • Cup Backface ToClear Radius 0.04"
  • Cone Frontface Backing Diameter 1.95"
  • Cone Backface Backing Diameter 2.09"
  • Cup Frontface Backing Diameter 3.05"
  • Cup Backface Backing Diameter 2.91"
  • Cage Cone Frontface Clearance 0.06"
  • Cage Cone Backface Clearance 0.01"
  • Effective Center Location -0.25"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 25578
  • Cup Part Number 25518
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 25500
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 20300 lbf
  • Static Radial Load 24900 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 5270 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 3020 lbf
  • Lubrication Required
  • Temperature Range -30° to 110 °C
  • ABEC Rating ABEC-1
  • Radial Clearance Standard (Available in C3/C4/C5)
  • RoHS Compliant
  • REACH Compliant
  • Weight 1.2 lb

Features

How Is 25578-25518 Bearing Engineered for Reliability?

25578-25518 Bearing features chrome steel rings and rollers, ensuring strength and durability under combined loads.
Its dynamic radial load capacity reaches 20,300 lbf, making it suitable for heavy-duty applications.

The tapered roller design distributes loads evenly, reducing stress and extending service life.
With a standard radial clearance, it offers reliable performance in various operating conditions.

25578-25518 Bearing operates efficiently within a temperature range of -30° to 110°C.
Its steel cage maintains roller alignment, ensuring smooth and consistent operation.

Designed for easy lubrication, 25578-25518 Bearing simplifies maintenance and reduces downtime.
The open seal type allows for straightforward inspection and re-lubrication when needed.

Application

Industrial Uses of 25578-25518 Bearing
25578-25518 Bearing is commonly used in heavy machinery like construction equipment, where its tapered roller design handles combined radial and thrust loads effectively. The chrome steel construction ensures durability in demanding environments.

In automotive applications, 25578-25518 Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its inch sizing makes it compatible with many North American vehicle models.

For industrial conveyor systems, 25578-25518 Bearing’s open design allows for easy lubrication, extending service life in high-load scenarios. The steel cage adds stability during continuous operation.

Where Is 25578-25518 Bearing Used?
You’ll find 25578-25518 Bearing in agricultural machinery, particularly in gearboxes and PTO shafts, where its robust design handles rough conditions. The standard radial clearance offers flexibility for different setups.

In mining equipment, 25578-25518 Bearing supports crushers and screens, thanks to its high dynamic load capacity. The ABEC-1 rating ensures consistent performance without over-engineering.

Built for Heavy-Duty Use: 25578-25518 Bearing
25578-25518 Bearing excels in forestry equipment like log splitters, where its tapered rollers manage uneven loads smoothly. The temperature range suits both cold and moderate climates.

For railway applications, 25578-25518 Bearing works well in axle boxes, offering reliable service under constant vibration. Its interchangeable design with Timken simplifies maintenance.

Automotive vs Aerospace: Applications of 25578-25518 Bearing
In trucks and trailers, 25578-25518 Bearing supports axles and transmissions, balancing load capacity with weight considerations. The inch measurements align with standard replacement parts.

For ground support equipment in aviation, 25578-25518 Bearing handles heavy loads while maintaining precision. Its chrome steel rollers resist wear in high-use scenarios.

Q&A

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