+86 15806631151 [email protected]
TFL BEARINGS
REQUEST A QUOTE
TS (Single Row Tapered Roller Bearings) (Imperial) 3781-3730

TS (Single Row Tapered Roller Bearings) (Imperial) 3781-3730

The 3781-3730 is a single-row tapered roller bearing with a 1.9375″ bore and 3.6718″ outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 27500 lbf radially and 4120 lbf in 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 industrial machinery or automotive systems where combined loads are common.

Weighing 1.9 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 precision needs. Its tapered roller design ensures efficient load distribution and long service life.

Perfect for applications requiring durability and reliability, such as conveyor systems or heavy-duty equipment. The inch measurements make it a convenient choice for imperial system users.

Get A Free Quote
    Description Features Application Q&A Featured Products Our Process

Product Parameters

  • Part Number 3781-3730
  • Brand TFL
  • Interchangeable Timken
  • Size 1.9375" x 3.6718" x 1.1876"
  • Bore Dia 1.9375"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.6718"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 1.193"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.9375"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 1.1876"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.14"
  • Cup Backface ToClear Radius 0.03"
  • Cone Frontface Backing Diameter 2.2"
  • Cone Backface Backing Diameter 2.44"
  • Cup Frontface Backing Diameter 3.50"
  • Cup Backface Backing Diameter 3.31"
  • Cage Cone Frontface Clearance 0.06"
  • Cage Cone Backface Clearance 0.06"
  • Effective Center Location -0.32"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 3781
  • Cup Part Number 3730
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 3700
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 27500 lbf
  • Static Radial Load 34300 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 7120 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 4120 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 1.900 lb

Features

Performance Features of 3781-3730 Bearing

3781-3730 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 27,500 lbf, making it suitable for heavy-duty applications.
The steel cage ensures proper roller alignment, enhancing durability and reducing friction.
With a temperature range of -30° to 110°C, it performs reliably in various conditions.

How Is 3781-3730 Bearing Engineered for Reliability?

3781-3730 Bearing features precise cone and cup dimensions, ensuring smooth operation under combined loads.
The chrome steel construction provides excellent wear resistance, extending the bearing’s service life.
Its standard radial clearance allows for flexibility in different applications.
The open design simplifies lubrication, maintaining optimal performance over time.

Built for Durability: 3781-3730 Bearing

3781-3730 Bearing’s single-row tapered roller design handles both radial and thrust loads efficiently.
The chrome steel rollers and rings offer high strength, supporting dynamic loads up to 27,500 lbf.
Its ABEC-1 rating ensures consistent performance in various industrial applications.
The bearing’s standard radial clearance makes it versatile for different operating conditions.

Steel vs Ceramic Bearings: Strengths of 3781-3730 Bearing

3781-3730 Bearing uses chrome steel for both rollers and rings, providing excellent durability and load capacity.
This material choice ensures reliable performance in demanding environments, with a static radial load of 34,300 lbf.
The steel cage maintains roller alignment, reducing wear and extending service life.
Its temperature range of -30° to 110°C makes it suitable for diverse operating conditions.

Application

Industrial Uses of 3781-3730 Bearing
You’ll often spot 3781-3730 Bearing in heavy machinery like construction equipment, where its tapered roller design handles both radial and thrust loads effortlessly. The chrome steel construction ensures it stands up to tough working conditions.

In automotive applications, 3781-3730 Bearing works well in wheel hubs and differential systems, thanks to its combined load capacity. The imperial sizing makes it a straightforward replacement for Timken bearings in older vehicles.

For industrial gearboxes, 3781-3730 Bearing’s single-row design provides reliable performance without complicating maintenance. Its standard radial clearance offers a good balance between precision and durability.

Where Is 3781-3730 Bearing Used?
Farm equipment frequently relies on 3781-3730 Bearing for its ability to handle uneven loads in tractors and harvesters. The steel cage keeps everything running smoothly even with dirt and debris around.

You’ll also find 3781-3730 Bearing in mining machinery, where its dynamic load rating of 27,500 lbf proves useful. The open design allows for easy relubrication in dusty environments.

Built for Heavy-Duty Use: 3781-3730 Bearing
This bearing shines in conveyor systems that move heavy materials all day long. Its -30° to 110°C temperature range means it won’t let you down in most working conditions.

The 3781-3730 Bearing’s ABEC-1 rating makes it suitable for general industrial applications where extreme precision isn’t critical. It’s a workhorse that gets the job done without fuss.

Automotive vs Industrial: Applications of 3781-3730 Bearing
In trucks, 3781-3730 Bearing typically supports rear axles, while in factory equipment it might appear in pulley systems. The same bearing adapts well to different environments.

The 1.9375″ bore size makes 3781-3730 Bearing compatible with various shaft diameters across industries. Whether it’s agricultural or manufacturing equipment, this bearing delivers consistent performance.

Q&A

SEND INQUIRY