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TS (Single Row Tapered Roller Bearings) (Imperial) 25578-25519

TS (Single Row Tapered Roller Bearings) (Imperial) 25578-25519

The 25578-25519 is a single-row tapered roller bearing with a 1.6875″ bore and 3.25″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 20300 lbf radially and 3020 lbf in thrust, making it versatile for various applications.

Its open design allows for easy lubrication, while the steel cage ensures durability under heavy use. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is interchangeable with Timken bearings, offering a reliable replacement option. Ideal for machinery like gearboxes or wheel hubs where combined loads are common.

Weighing 1.3 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s a safe choice for industrial use.

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Product Parameters

  • Part Number 25578-25519
  • Brand TFL
  • Interchangeable Timken
  • Size 1.6875" x 3.25" x 0.9376"
  • Bore Dia 1.6875"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.25"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.75"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 0.9376"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.09"
  • Cup Backface ToClear Radius 0.08"
  • Cone Frontface Backing Diameter 1.95"
  • Cone Backface Backing Diameter 2.09"
  • Cup Frontface Backing Diameter 3.05"
  • Cup Backface Backing Diameter 2.87"
  • 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 25519
  • 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 1.3 lb

Features

Performance Features of 25578-25519 Bearing

25578-25519 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 20,300 lbf, making it suitable for heavy-duty applications.
The steel cage ensures proper roller alignment, reducing friction and enhancing durability.
With a standard radial clearance, it provides reliable performance across various operating conditions.

How Is 25578-25519 Bearing Engineered for Reliability?

25578-25519 Bearing features a single-row tapered roller design, ideal for handling both radial and thrust loads.
The chrome steel construction ensures long-lasting performance in temperatures ranging from -30° to 110°C.
Its precise tolerances and effective center location contribute to smooth operation.
The open seal type allows for easy lubrication, maintaining optimal performance over time.

Built for Durability: 25578-25519 Bearing

25578-25519 Bearing’s robust chrome steel components withstand high static radial loads up to 24,900 lbf.
The tapered roller design distributes loads evenly, reducing stress on individual components.
Its steel cage maintains roller positioning, ensuring consistent performance.
With an ABEC-1 rating, it balances precision and durability in various industrial applications.

Application

Key Fields for 25578-25519 Bearing
In industrial settings, 25578-25519 Bearing handles combined loads effectively, making it suitable for heavy machinery like gearboxes and conveyor rollers. Its tapered roller design ensures reliable performance under varying stress conditions.
For automotive applications, 25578-25519 Bearing works well in wheel hubs and differential systems, where its chrome steel construction offers durability. The imperial sizing simplifies compatibility with North American vehicle designs.

Where Is 25578-25519 Bearing Used?
You’ll often find 25578-25519 Bearing in construction equipment, supporting axles and drivetrains with its robust load capacity. The open design allows for easy lubrication, extending service life in dusty environments.
In agricultural machinery, 25578-25519 Bearing withstands harsh conditions, from tractors to harvesters, thanks to its steel cage and tapered rollers.

Built for Heavy-Duty Use: 25578-25519 Bearing
Mining equipment benefits from 25578-25519 Bearing’s ability to manage radial and thrust loads simultaneously. Its standard radial clearance accommodates thermal expansion in high-temperature operations.
The bearing’s ABEC-1 rating ensures consistent precision for general industrial use, balancing performance and cost-effectiveness.

Automotive vs Industrial: Applications of 25578-25519 Bearing
In trucks, 25578-25519 Bearing supports rear axles, handling heavy loads over long distances. The chrome steel rollers reduce friction, improving fuel efficiency.
For factory machinery, this bearing’s single-row design simplifies installation in pumps and compressors, where space is often limited.

Practical Applications of 25578-25519 Bearing
Railway freight cars rely on 25578-25519 Bearing for its durability in high-vibration environments. The steel cage prevents roller misalignment, even under shock loads.
Its compatibility with Timken equivalents makes it a versatile choice for maintenance and replacement across various industries.

Q&A

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