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TS (Single Row Tapered Roller Bearings) (Imperial) 43125-43312

TS (Single Row Tapered Roller Bearings) (Imperial) 43125-43312

The 43125-43312 is a single-row tapered roller bearing with a 1.25″ bore and 3.125″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 20700 lbf radially and 6130 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 axles where combined loads are common.

Weighing 1.3 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and eco-friendly use.

The standard radial clearance and ABEC-1 rating make it suitable for general industrial applications. Its tapered roller design ensures even load distribution for longer service life.

Perfect for maintenance tasks or new installations in automotive and industrial settings. The clearances and tolerances are designed for straightforward fitting and reliable performance.

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Product Parameters

  • Part Number 43125-43312
  • Brand TFL
  • Interchangeable Timken
  • Size 1.25" x 3.125" x 1"
  • Bore Dia 1.25"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.125"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 0.9478"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.6875"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.06"
  • Cup Backface ToClear Radius 0.06"
  • Cone Frontface Backing Diameter 1.63"
  • Cone Backface Backing Diameter 1.73"
  • Cup Frontface Backing Diameter 2.94"
  • Cup Backface Backing Diameter 2.64"
  • Cage Cone Frontface Clearance 0.13"
  • Cage Cone Backface Clearance 0.1"
  • Effective Center Location -0.08"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 43125
  • Cup Part Number 43312
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 43000
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 20700 lbf
  • Static Radial Load 17100 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 5360 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 6130 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 43125-43312 Bearing

43125-43312 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 20,700 lbf, ensuring reliable performance in various applications.
The steel cage maintains roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs well in diverse environments.

Why Choose 43125-43312 Bearing for Precision Tasks?

43125-43312 Bearing features precise cone and cup width tolerances, ensuring accurate alignment.
The tapered roller design distributes loads evenly, enhancing stability and reducing wear.
Its ABEC-1 rating guarantees consistent performance for precision applications.
The standard radial clearance options provide flexibility for different operational needs.

Engineered for Reliability: 43125-43312 Bearing

43125-43312 Bearing’s chrome steel construction resists wear, maintaining performance under heavy loads.
The effective center location design improves load distribution, reducing stress on components.
With dynamic thrust ratings of 6,130 lbf, it handles demanding conditions with ease.
Its open seal type allows for easy lubrication, ensuring smooth operation over time.

Steel vs Ceramic Bearings: Strengths of 43125-43312 Bearing

43125-43312 Bearing’s chrome steel rollers provide durability and cost-effectiveness compared to ceramic.
The single-row tapered design offers excellent load capacity and alignment stability.
Its standard lubrication requirement simplifies maintenance without compromising performance.
Weighing just 1.3 lb, it balances strength and ease of handling in various applications.

Application

Industrial Uses of 43125-43312 Bearing
43125-43312 Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads efficiently. The chrome steel construction ensures durability even in demanding environments.

In automotive applications, 43125-43312 Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its imperial sizing makes it a straightforward replacement for Timken equivalents in older vehicles.

For industrial conveyor systems, 43125-43312 Bearing’s open design simplifies lubrication and maintenance, reducing downtime. The steel cage adds extra strength, making it suitable for high-load scenarios.

Where Is 43125-43312 Bearing Used?
You’ll often find 43125-43312 Bearing in mining equipment, where its robust design handles harsh conditions. The tapered rollers distribute loads evenly, extending service life.

In manufacturing plants, 43125-43312 Bearing supports machinery like presses and gearboxes. Its standard radial clearance ensures smooth operation without frequent adjustments.

Built for Heavy-Duty Use: 43125-43312 Bearing
43125-43312 Bearing excels in applications like forklifts and cranes, where combined radial and thrust loads are common. The chrome steel rollers resist wear, even under constant stress.

For railway maintenance equipment, 43125-43312 Bearing’s durability and ease of lubrication make it a practical choice. The ABEC-1 rating ensures consistent performance without over-engineering.

Automotive vs Aerospace: Applications of 43125-43312 Bearing
In automotive systems, 43125-43312 Bearing is ideal for drivetrains, balancing loads effectively. Its imperial measurements align with many North American vehicle standards.

For aerospace ground support equipment, 43125-43312 Bearing provides reliable performance without the need for specialised materials. The temperature range suits most operational environments.

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