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TS (Single Row Tapered Roller Bearings) (Imperial) 28985-28921

TS (Single Row Tapered Roller Bearings) (Imperial) 28985-28921

The 28985-28921 is a single-row tapered roller bearing with a 2.375″ bore and 3.937″ outer diameter, crafted from sturdy chrome steel. It manages combined loads up to 23800 lbf radially and 4500 lbf thrust-wise, suitable for moderate-speed applications.

Its open design allows 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 use in gearboxes, axles, or industrial machinery where combined loads are present.

Weighing 1.7 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 28985-28921
  • Brand TFL
  • Interchangeable Timken
  • Size 2.375" x 3.937" x 1"
  • Bore Dia 2.375"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.937"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.7813"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 2.64"
  • Cone Backface Backing Diameter 2.87"
  • Cup Frontface Backing Diameter 3.82"
  • Cup Backface Backing Diameter 3.50"
  • Cage Cone Frontface Clearance 0.09"
  • Cage Cone Backface Clearance 0.05"
  • Effective Center Location -0.1"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 28985
  • Cup Part Number 28921
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 28900
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 23800 lbf
  • Static Radial Load 33500 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 6180 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 4500 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 1.7 lb

Features

Why Choose 28985-28921 Bearing for Precision Tasks?

28985-28921 Bearing features a single row tapered roller design, ideal for handling combined radial and thrust loads.
Its chrome steel construction ensures durability, with a dynamic radial load capacity of 23,800 lbf.

The precise tolerances of 28985-28921 Bearing enhance performance, making it suitable for high-precision applications.
With a temperature range of -30° to 110°C, it operates reliably in various environments.

28985-28921 Bearing’s standard radial clearance and ABEC-1 rating provide consistent performance.
Its steel cage maintains roller alignment, reducing friction and extending service life.

Application

Industrial Uses of 28985-28921 Bearing
You’ll often spot 28985-28921 Bearing in heavy machinery like construction equipment, where its tapered roller design handles combined loads effortlessly. The chrome steel construction ensures it stands up to tough conditions without wearing out quickly.

In automotive applications, 28985-28921 Bearing is a go-to for wheel hubs and differential systems, thanks to its reliable performance under radial and thrust loads. The imperial sizing makes it a perfect fit for North American vehicle designs.

For industrial conveyor systems, 28985-28921 Bearing’s open design simplifies lubrication, keeping operations smooth even in dusty environments. Its steel cage adds durability, making it a low-maintenance choice for continuous use.

What Makes 28985-28921 Bearing a Preferred Choice?
Farm equipment like tractors and harvesters benefit from 28985-28921 Bearing’s ability to handle heavy radial loads. The standard radial clearance ensures consistent performance even in uneven terrain.

In mining machinery, 28985-28921 Bearing’s robust design copes with high vibrations and shock loads. Its temperature range of -30° to 110°C means it won’t let you down in extreme conditions.

Built for Heavy-Duty Use: 28985-28921 Bearing
Railway applications rely on 28985-28921 Bearing for axle boxes, where its tapered rollers manage both radial and axial forces. The ABEC-1 rating strikes a balance between precision and cost-effectiveness.

For power transmission systems, 28985-28921 Bearing’s dynamic load capacity ensures longevity. The steel cage and chrome steel rollers work together to reduce friction and heat buildup.

Light-Duty vs Heavy-Duty: Best Uses for 28985-28921 Bearing
In light-duty scenarios like small gearboxes, 28985-28921 Bearing offers reliable performance without over-engineering. Its standard radial clearance adapts well to moderate loads.

For heavy-duty industrial presses, 28985-28921 Bearing’s static load rating of 33,500 lbf provides the necessary support. The inch measurements make it compatible with older machinery still using imperial units.

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