TS (Single Row Tapered Roller Bearings) (Imperial) 3784-3720

The 3784-3720 is a single-row tapered roller bearing with a 2″ bore and 3.6718″ outer diameter, crafted from durable chrome steel. It handles combined loads up to 27500 lbf radially and 4120 lbf thrust, making it versatile for various applications.

Its open design allows easy lubrication, while the steel cage ensures reliable performance. The bearing operates smoothly in temperatures from -30°C to 110°C, suitable for demanding environments.

This model is interchangeable with Timken bearings, offering a practical replacement option. Ideal for heavy-duty machinery, gearboxes, or automotive systems where combined loads are common.

Weighing 1.8 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

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Description

Features

Application

Q&A

Product Parameters

Part Number 3784-3720
Brand TFL
Interchangeable Timken
Size 2" x 3.6718" x 1.1875"
Bore Dia 2"
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 1.1875"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.25"
Cup Backface ToClear Radius 0.130"
Cone Frontface Backing Diameter 2.28"
Cone Backface Backing Diameter 2.76"
Cup Frontface Backing Diameter 3.50"
Cup Backface Backing Diameter 3.23"
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 3784
Cup Part Number 3720
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 1.8 lb

Features

How Is 3784-3720 Bearing Engineered for Reliability?

3784-3720 Bearing is built with chrome steel rings and rollers, ensuring strength and durability under combined loads.
Its dynamic radial load capacity reaches 27,500 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 3784-3720 Bearing Suitable for High-Temperature Applications?

3784-3720 Bearing operates efficiently in temperatures ranging from -30° to 110°C, thanks to its chrome steel construction.
The tapered roller design distributes loads evenly, enhancing performance under stress.
Its standard radial clearance allows for smooth operation even in fluctuating temperatures.
This bearing is ideal for applications requiring consistent performance in varying thermal conditions.

Designed for Durability: 3784-3720 Bearing

3784-3720 Bearing features a single-row tapered roller design, optimised for combined load handling.
The chrome steel components resist wear, ensuring long-term reliability in demanding environments.
With a static radial load capacity of 34,300 lbf, it excels in heavy-load scenarios.
Its open seal type simplifies maintenance, reducing downtime and operational costs.

Application

Industrial Uses of 3784-3720 Bearing
The 3784-3720 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.

In automotive applications, 3784-3720 Bearing fits well in wheel hubs and drivetrains, providing reliable performance under both radial and thrust loads. The inch sizing makes it a straightforward replacement for Timken equivalents in many vehicles.

For industrial conveyor systems, 3784-3720 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 3784-3720 Bearing Used?
You’ll often find 3784-3720 Bearing in mining equipment, where its robust design copes with harsh conditions. The standard radial clearance ensures smooth operation even under heavy stress.

In manufacturing plants, 3784-3720 Bearing supports machinery like presses and gearboxes, thanks to its balanced load capacity. The ABEC-1 rating guarantees consistent performance for most industrial needs.

Built for Heavy-Duty Use: 3784-3720 Bearing
The 3784-3720 Bearing excels in applications like forestry machinery, where its tapered rollers manage uneven loads effortlessly. Its temperature range (-30° to 110°C) suits both cold and hot environments.

For railway systems, 3784-3720 Bearing’s dynamic radial load capacity ensures reliability in rolling stock components. The steel cage and chrome steel rollers enhance its lifespan under constant use.

Automotive vs Aerospace: Applications of 3784-3720 Bearing
In automotive settings, 3784-3720 Bearing is ideal for axles and differentials, offering a balance of strength and precision. The inch measurements align with many North American vehicle standards.

For aerospace ground equipment, 3784-3720 Bearing provides dependable performance in loading systems and maintenance tools. Its compliance with RoHS and REACH regulations makes it a safe choice for various industries.