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TS (Single Row Tapered Roller Bearings) (Imperial) 321-312

TS (Single Row Tapered Roller Bearings) (Imperial) 321-312

The 321-312 is a single-row tapered roller bearing with a 1.0148″ bore and 2.8593″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 16800 lbf and is designed for smooth operation in various conditions.

Its open design allows easy lubrication, while the steel cage ensures durability. The bearing works well in temperatures from -30°C to 110°C, making it versatile for different environments.

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

Weighing just 1.1 lb, it’s lightweight yet robust. Compliant with RoHS and REACH standards, it’s a safe choice for many engineering needs.

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Product Parameters

  • Part Number 321-312
  • Brand TFL
  • Interchangeable Timken
  • Size 1.0148" x 2.8593" x 1.0627"
  • Bore Dia 1.0148"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 2.8593"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 0.873"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.9375"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.0627"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.03"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 1.3"
  • Cone Backface Backing Diameter 1.34"
  • Cup Frontface Backing Diameter 2.68"
  • Cup Backface Backing Diameter 2.48"
  • Cage Cone Frontface Clearance 0.04"
  • Cage Cone Backface Clearance 0.01"
  • Effective Center Location -0.27"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 321
  • Cup Part Number 312
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 315
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 16800 lbf
  • Static Radial Load 16800 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 4370 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 1880 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 1.1 lb

Features

Performance Features of 321-312 Bearing

321-312 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 16,800 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.

321-312 Bearing requires lubrication, which helps maintain smooth operation over time.
Its standard radial clearance options provide flexibility for different installation needs.

Application

Industrial Uses of 321-312 Bearing
The 321-312 Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined radial and thrust loads efficiently. Its chrome steel construction ensures durability in tough working conditions.

Where Is 321-312 Bearing Used?
You’ll often find the 321-312 Bearing in automotive applications, particularly in wheel hubs and differential systems. Its inch sizing makes it a reliable choice for American and British vehicle models.

Built for Heavy-Duty Use: 321-312 Bearing
In industrial settings, the 321-312 Bearing supports conveyor systems and gearboxes, thanks to its robust steel cage and standard radial clearance. The open design allows for easy lubrication and maintenance.

Automotive vs Aerospace: Applications of 321-312 Bearing
While the 321-312 Bearing is popular in automotive drivetrains, it also finds use in aerospace landing gear components. Its ABEC-1 rating ensures consistent performance in precision applications.

Perfect Fit for Automation: 321-312 Bearing
The 321-312 Bearing works well in automated assembly lines, where its tapered rollers provide smooth motion control. The steel cage and chrome steel rollers offer long service life even in high-cycle operations.

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