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TS (Single Row Tapered Roller Bearings) (Imperial) 3478-3420

TS (Single Row Tapered Roller Bearings) (Imperial) 3478-3420

The 3478-3420 is a single-row tapered roller bearing with a 1.375″ bore and 3.125″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 23500 lbf radially and 3820 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 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 1.5lb, it balances strength and manageability. 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 use. Its tapered roller design ensures even load distribution, extending service life.

Perfect for maintenance tasks where easy installation and long-term reliability are key. Works well in automotive and heavy equipment applications.

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Product Parameters

  • Part Number 3478-3420
  • Brand TFL
  • Interchangeable Timken
  • Size 1.375" x 3.125" x 1.1563"
  • Bore Dia 1.375"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.125"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.1721"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.9375"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.1563"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 1.71"
  • Cone Backface Backing Diameter 1.97"
  • Cup Frontface Backing Diameter 2.94"
  • Cup Backface Backing Diameter 2.64"
  • Cage Cone Frontface Clearance 0.05"
  • Cage Cone Backface Clearance 0.04"
  • Effective Center Location -0.34"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 3478
  • Cup Part Number 3420
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 3400
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 23500 lbf
  • Static Radial Load 26800 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 6100 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 3820 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 1.500 lb

Features

Performance Features of 3478-3420 Bearing

3478-3420 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 23,500 lbf, making it suitable for heavy-duty applications.

The steel cage ensures proper roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs reliably in various environments.

3478-3420 Bearing’s standard radial clearance allows for smooth operation under different conditions.
Its ABEC-1 rating ensures consistent performance for precision applications.

Application

Industrial Uses of 3478-3420 Bearing
The 3478-3420 Bearing is commonly used in heavy machinery like construction equipment and agricultural gear, where its tapered roller design handles combined loads efficiently. Its chrome steel construction ensures durability even in demanding environments.

What Makes 3478-3420 Bearing a Preferred Choice?
In automotive applications, 3478-3420 Bearing fits well in wheel hubs and differential systems, thanks to its precise inch sizing and robust load capacity. The open design allows for easy lubrication, extending its service life.

Built for Heavy-Duty Use: 3478-3420 Bearing
For industrial conveyors and gearboxes, 3478-3420 Bearing offers reliable performance with its standard radial clearance and ABEC-1 rating. The steel cage adds stability, making it suitable for high-load scenarios.

Automotive vs Aerospace: Applications of 3478-3420 Bearing
While 3478-3420 Bearing excels in automotive drivetrains, its inch measurements and load ratings also make it useful in aerospace auxiliary systems. The temperature range ensures performance in varied conditions.

Perfect Fit for Automation: 3478-3420 Bearing
In automated production lines, 3478-3420 Bearing supports robotic arms and assembly units with its smooth operation and combined load capability. The chrome steel rollers reduce friction, enhancing efficiency.

Q&A

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