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TS (Single Row Tapered Roller Bearings) (Imperial) 3994-3920

TS (Single Row Tapered Roller Bearings) (Imperial) 3994-3920

The 3994-3920 is a single-row tapered roller bearing with a 2.625″ bore and 4.4375″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 31200 lbf radially and 5570 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.

Interchangeable with Timken bearings, this model is a reliable choice for replacements. Ideal for industrial machinery or automotive systems where combined loads are common.

Weighing 2.6 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and sustainable use.

The standard radial clearance and ABEC-1 rating ensure consistent performance. Suitable for applications requiring precise load distribution and long service life.

Its tapered roller design provides effective centre location, enhancing stability. Perfect for gearboxes, axles, or other heavy-duty equipment.

The chrome steel rollers and rings offer excellent wear resistance. Maintenance is straightforward, with clearances designed for easy inspection and lubrication.

This bearing is a practical solution for demanding environments. Its balanced construction ensures reliable operation under varying load conditions.

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Product Parameters

  • Part Number 3994-3920
  • Brand TFL
  • Interchangeable Timken
  • Size 2.625" x 4.4375" x 1.1875"
  • Bore Dia 2.625"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.4375"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.183"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.9375"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.1875"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.220"
  • Cup Backface ToClear Radius 0.130"
  • Cone Frontface Backing Diameter 3.57"
  • Cone Backface Backing Diameter 3.39"
  • Cup Frontface Backing Diameter 4.18"
  • Cup Backface Backing Diameter 3.90"
  • Cage Cone Frontface Clearance 0.08"
  • Cage Cone Backface Clearance 0.06"
  • Effective Center Location -0.18"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 3994
  • Cup Part Number 3920
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 3900
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 31200 lbf
  • Static Radial Load 43000 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 8090 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 5570 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 2.6 lb

Features

How Is 3994-3920 Bearing Engineered for Reliability?

3994-3920 Bearing is built with chrome steel rings and rollers, ensuring strength and durability under combined loads.
Its dynamic radial load capacity reaches 31,200 lbf, making it suitable for heavy-duty applications.
The steel cage maintains proper roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

What Makes 3994-3920 Bearing Suitable for High-Temperature Applications?

3994-3920 Bearing operates efficiently in temperatures ranging from -30° to 110°C without compromising performance.
The chrome steel construction resists thermal expansion, maintaining precision under heat.
Its open design allows for easy lubrication, ensuring smooth operation in demanding environments.
The standard radial clearance options provide flexibility for different application needs.

Designed for Durability: 3994-3920 Bearing

3994-3920 Bearing features a single-row tapered roller design, optimised for combined load handling.
The chrome steel rollers and rings enhance wear resistance, prolonging service life.
With a static radial load capacity of 43,000 lbf, it excels in high-stress scenarios.
Its ABEC-1 rating ensures consistent performance for industrial applications.

Application

Industrial Uses of 3994-3920 Bearing
The 3994-3920 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.

Where Is 3994-3920 Bearing Used?
You’ll often find the 3994-3920 Bearing in automotive applications, particularly in wheel hubs and differential systems. Its inch sizing makes it a reliable choice for vehicles requiring precise load distribution.

Built for Heavy-Duty Use: 3994-3920 Bearing
The 3994-3920 Bearing excels in industrial fans and pumps, thanks to its robust steel cage and tapered rollers. It’s designed to withstand high radial and thrust loads without compromising performance.

Automotive vs Aerospace: Applications of 3994-3920 Bearing
In automotive systems, the 3994-3920 Bearing supports wheel assemblies, while in aerospace, it’s used in auxiliary gearboxes. Its ABEC-1 rating ensures consistent performance across different industries.

Practical Applications of 3994-3920 Bearing
For conveyor systems and mining equipment, the 3994-3920 Bearing offers reliable performance under heavy loads. Its standard radial clearance makes it versatile for various industrial settings.

Q&A

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