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3775-3729D TDO (Two-Row Double-Outer Race) (Imperial)

3775-3729D TDO (Two-Row Double-Outer Race) (Imperial)

The 3775-3729D is a two-row tapered roller bearing with a 2-inch bore and 3.6718-inch outer diameter, built from sturdy chrome steel. It handles combined loads up to 47,800 lbf and is designed for long-lasting performance in demanding conditions.

Its double-row construction provides extra stability, while the open design allows for easy lubrication. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

This model is part of the 3700 series and comes with standard cups for straightforward installation. Ideal for heavy-duty applications like truck axles or industrial gearboxes where reliability is key.

Weighing just under 4 pounds, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, ensuring safe and eco-friendly use.

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Product Parameters

  • Part Number 3775-3729D
  • Brand TFL
  • Size 2" x 3.6718" x 1.193"
  • Bore Dia 2"
  • 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 3775
  • 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 3.990 lb

Features

How Is 3775-3729D Bearing Engineered for Reliability?

3775-3729D Bearing features a double-row tapered roller design, providing strong resistance to combined radial and thrust loads.
Its chrome steel construction ensures durability, even under heavy dynamic radial loads of up to 47,800 lbf.
The steel cage maintains roller alignment, reducing friction and extending the bearing’s service life.
With a standard radial clearance and ABEC-1 rating, it offers consistent performance in various applications.

What Makes 3775-3729D Bearing Suitable for High-Temperature Applications?

3775-3729D Bearing operates reliably in temperatures ranging from -30° to 110°C, making it versatile for different environments.
The chrome steel rings and rollers resist thermal expansion, maintaining precision under heat.
Its open design allows for effective lubrication, further enhancing high-temperature performance.
This ensures smooth operation even in demanding industrial conditions.

Designed for Durability: 3775-3729D Bearing

3775-3729D Bearing’s double-row construction distributes loads evenly, reducing stress on individual rollers.
The chrome steel materials resist wear, ensuring long-term reliability in heavy-duty applications.
With a dynamic radial load capacity of 47,800 lbf, it handles demanding operational conditions.
Its standard radial clearance and ABEC-1 rating provide consistent performance over time.

Application

Industrial Uses of 3775-3729D Bearing
3775-3729D Bearing is commonly used in heavy machinery, such as construction equipment and mining gear, where its double-row design handles combined radial and thrust loads efficiently. The chrome steel construction ensures durability in tough working conditions.

In automotive applications, 3775-3729D Bearing fits well in wheel hubs and differential systems, providing reliable performance under varying loads. Its inch sizing makes it a good match for American and British vehicle standards.

For industrial conveyor systems, 3775-3729D Bearing’s tapered roller design offers smooth operation and long service life. The open seal type allows for easy lubrication, which is essential for high-use environments.

What Makes 3775-3729D Bearing a Preferred Choice?
3775-3729D Bearing stands out in agricultural machinery, where its robust build handles the demands of tractors and harvesters. The standard radial clearance ensures consistent performance even with temperature fluctuations.

In material handling equipment, 3775-3729D Bearing’s two-row configuration provides stability and load distribution. The steel cage adds strength, making it suitable for heavy lifting and transport applications.

Built for Heavy-Duty Use: 3775-3729D Bearing
3775-3729D Bearing is ideal for forestry equipment, where its tapered rollers manage uneven loads and shocks effectively. The ABEC-1 rating ensures reliable precision for most industrial needs.

For railway applications, 3775-3729D Bearing’s combined load capacity makes it a solid choice for axle boxes. Its temperature range allows it to perform well in both hot and cold climates.

Automotive vs Aerospace: Applications of 3775-3729D Bearing
In automotive settings, 3775-3729D Bearing is often found in truck transmissions, where its durability and load capacity are key. The inch measurements simplify replacements in older models.

For aerospace ground support equipment, 3775-3729D Bearing’s reliability and ease of maintenance are valuable. Its compliance with RoHS and REACH standards ensures environmental safety.

Q&A

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