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3782-3729D TDO (Two-Row Double-Outer Race) (Imperial)

3782-3729D TDO (Two-Row Double-Outer Race) (Imperial)

The 3782-3729D is a two-row tapered roller bearing with a 1.75″ bore and 3.6718″ outer diameter, built from sturdy chrome steel for long-lasting performance.
It handles combined loads up to 47,800 lbf and is designed for smooth operation in temperatures from -30°C to 110°C.

The open design allows easy lubrication, while the steel cage ensures durability under heavy use. Its double-row construction provides extra stability for demanding applications.
Ideal for industrial machinery or vehicle systems where both radial and thrust loads are present, this bearing comes in standard radial clearance.

Weighing 4.45 lb, it’s a robust choice for heavy-duty equipment. Compliant with RoHS and REACH standards, it’s a reliable replacement option in imperial-sized systems.

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Product Parameters

  • Part Number 3782-3729D
  • Brand TFL
  • Size 1.75" x 3.6718" x 1.193"
  • Bore Dia 1.75"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 3.6718"
  • Outer Dia Tolerance +0.001" to 0
  • Double Cup Width 2.0625"
  • Double Cup Width Tolerance +0.003" to -0.01
  • Cone Width 1.193"
  • Cone Width Tolerance +0.002" to -0.01
  • Bearing Width Across Cups 2.5625"
  • Bearing Width Across Cups Tolerance +0.008" to 0
  • Cup Backface ToClear Radius 0.03"
  • Cone Backface Backing Diameter 2.28"
  • Cup Frontface Backing Diameter 3.50"
  • Cage Cone Backface Clearance 0.06"
  • Dynamic Radial Load 47800 lbf
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 3782
  • Cup Part Number 3729D
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Cups Type Standard
  • Series 3700
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Rating(One Row 90 Million Revolutions) 7120 lbf
  • Dynamic Thrust Rating(90 Million Revolutions) 4120 lbf
  • Dynamic Radial Rating(Two Row 90 Million Revolutions) 12400 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 4.450 lb

Features

How Is 3782-3729D Bearing Engineered for Reliability?

3782-3729D Bearing features a double-row tapered roller design, providing strong resistance to combined loads.
Its chrome steel rings and rollers ensure durability, with a dynamic radial load capacity of 47,800 lbf.

The steel cage maintains proper roller alignment, reducing friction and extending service life.
With a standard radial clearance, it offers reliable performance in various industrial applications.

Designed for temperatures from -30° to 110°C, 3782-3729D Bearing performs well in demanding conditions.
Its open construction allows for easy lubrication, ensuring smooth operation over time.

Application

Industrial Uses of 3782-3729D Bearing
The 3782-3729D Bearing is commonly used in heavy machinery, such as construction equipment and mining vehicles, where its double-row design handles combined radial and thrust loads efficiently.
Its chrome steel construction ensures durability in demanding environments, making it a reliable choice for long-term use.

Where Is 3782-3729D Bearing Used?
You’ll often find the 3782-3729D Bearing in agricultural machinery, like tractors and harvesters, where its tapered roller design provides stability under heavy loads.
The open seal type allows for easy lubrication, which is essential in dusty or high-wear conditions.

Built for Heavy-Duty Use: 3782-3729D Bearing
This bearing excels in industrial gearboxes, where its two-row configuration distributes loads evenly, reducing wear and extending service life.
The standard radial clearance makes it versatile for various applications, from conveyor systems to power transmission units.

Automotive vs Aerospace: Applications of 3782-3729D Bearing
In automotive applications, the 3782-3729D Bearing supports wheel hubs and differentials, thanks to its robust design and high dynamic load capacity.
For aerospace, its precision and reliability make it suitable for auxiliary systems, though it’s more commonly seen in ground support equipment.

Perfect Fit for Automation: 3782-3729D Bearing
The 3782-3729D Bearing is ideal for automated production lines, where its consistent performance ensures smooth operation of robotic arms and assembly systems.
Its steel cage and chrome steel rollers provide the necessary strength for high-cycle applications.

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