TS (Single Row Tapered Roller Bearings) (Imperial) 4370-4320

The 4370-4320 is a single-row tapered roller bearing with a 1.75″ bore and 3.4843″ outer diameter, made from sturdy chrome steel. It handles combined loads up to 44700 lbf radially and 5640 lbf thrust, making it versatile for various applications.

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

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

Weighing 2.4 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

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Description

Features

Application

Q&A

Product Parameters

Part Number 4370-4320
Brand TFL
Interchangeable Timken
Size 1.75" x 3.4843" x 1.5626"
Bore Dia 1.75"
Bore Dia Tolerance +0.005" to 0
Outer Dia 3.4843"
Outer Dia Tolerance +0.001" to 0
Cone Width 1.59"
Cone Width Tolerance +0.003" to -0.01
Cup Width 1.3125"
Cup Width Tolerance +0.002" to -0.01
Width 1.5626"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.14"
Cup Backface ToClear Radius 0.130"
Cone Frontface Backing Diameter 2.05"
Cone Backface Backing Diameter 2.44"
Cup Frontface Backing Diameter 3.34"
Cup Backface Backing Diameter 2.99"
Cage Cone Frontface Clearance 0.06"
Cage Cone Backface Clearance 0.06"
Effective Center Location -0.59"
System of Measurement Inch
Type Bearing
Cone Part Number 4370
Cup Part Number 4320
Bearing Type Roller
Roller Bearing Type Tapered
For Load Direction Combined
Construction Single Row
Seal Type Open
Cups Type Standard
Series 4300
Ring Material Chrome Steel
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Load 44700 lbf
Static Radial Load 45900 lbf
Dynamic Radial Rating(90 Million Revolutions)(C90) 11600 lbf
Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 5640 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 2.4 lb

Features

Performance Features of 4370-4320 Bearing

4370-4320 Bearing is built with chrome steel rings and rollers, offering robust performance under combined loads.
Its dynamic radial load capacity reaches 44,700 lbf, making it suitable for heavy-duty applications.
The steel cage ensures proper roller alignment, enhancing durability and reducing friction.
With a standard radial clearance, it provides reliable operation in various industrial settings.

How Is 4370-4320 Bearing Engineered for Reliability?

4370-4320 Bearing features a single-row tapered roller design, ideal for handling both radial and thrust loads.
The chrome steel construction resists wear, ensuring a long service life even in demanding conditions.
Its effective centre location of -0.59″ helps maintain precise alignment during operation.
With an ABEC-1 rating, it balances performance and affordability for general applications.

Built for Durability: 4370-4320 Bearing

4370-4320 Bearing’s chrome steel rollers and rings provide excellent resistance to heavy loads and wear.
The steel cage maintains roller positioning, reducing friction and extending bearing life.
Its dynamic thrust rating of 5,640 lbf ensures reliable performance under varying load conditions.
Operating within a temperature range of -30° to 110°C, it adapts to different working environments.

Steel vs Ceramic Bearings: Strengths of 4370-4320 Bearing

4370-4320 Bearing uses chrome steel for both rollers and rings, offering a cost-effective solution with good durability.
The steel construction provides reliable performance under high radial loads up to 44,700 lbf.
Unlike ceramic bearings, it’s more suitable for applications where impact resistance is important.
With standard radial clearance options, it offers flexibility for various installation requirements.

Application

Industrial Uses of 4370-4320 Bearing
The 4370-4320 Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads effectively. Its chrome steel construction ensures durability in demanding environments.

In automotive applications, 4370-4320 Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. The imperial sizing makes it a straightforward replacement for Timken bearings in many vehicles.

For industrial conveyor systems, 4370-4320 Bearing’s open design simplifies lubrication and maintenance, while its standard radial clearance accommodates thermal expansion during continuous operation. The steel cage adds stability under high-speed conditions.

What Makes 4370-4320 Bearing a Preferred Choice?
The 4370-4320 Bearing stands out in applications like gearboxes and power transmission systems due to its balanced load capacity and ABEC-1 precision. Its compatibility with Timken designs makes it a versatile option.

In mining equipment, 4370-4320 Bearing’s robust construction resists wear from abrasive materials, while its temperature range suits both hot and cold operating conditions. The tapered rollers distribute stress evenly for longer service life.

Built for Heavy-Duty Use: 4370-4320 Bearing
The 4370-4320 Bearing excels in forestry machinery, where its combined load handling supports log splitters and sawmill conveyors. The chrome steel rollers maintain performance even under shock loads.

For railway applications, 4370-4320 Bearing’s standard radial clearance ensures smooth operation in axle boxes, while its imperial dimensions align with North American rolling stock specifications. The steel cage prevents roller skewing during starts and stops.

Automotive vs Industrial: Applications of 4370-4320 Bearing
In trucks and trailers, 4370-4320 Bearing handles wheel end loads reliably, thanks to its dynamic thrust rating. The open design allows for easy greasing during routine maintenance.

For industrial pumps and compressors, 4370-4320 Bearing’s single-row construction provides compactness without sacrificing load capacity. Its C3 clearance option accommodates thermal expansion in high-speed scenarios.