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TS (Single Row Tapered Roller Bearings) (Imperial) 399A-394ARB

TS (Single Row Tapered Roller Bearings) (Imperial) 399A-394ARB

The 399A-394ARB is a single-row tapered roller bearing with a 2.6875″ bore and 4.3307″ outer diameter, crafted from durable chrome steel. It handles combined loads up to 22200 lbf radially and 3970 lbf thrust, making it versatile for various applications.

Its open design allows easy lubrication, while the steel cage ensures reliable performance under heavy loads. The bearing operates smoothly in temperatures ranging from -30°C to 110°C.

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

Weighing 1.7 lb, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it meets safety and environmental requirements. The standard radial clearance ensures easy installation and maintenance.

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Product Parameters

  • Part Number 399A-394ARB
  • Brand TFL
  • Interchangeable Timken
  • Size 2.6875" x 4.3307" x 0.8661"
  • Bore Dia 2.6875"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.3307"
  • Outer Dia Tolerance +0.001" to 0
  • Cone Width 0.866"
  • Cone Width Tolerance +0.003" to -0.01
  • Cup Width 0.7411"
  • Cup Width Tolerance +0.002" to -0.01
  • Width 0.8661"
  • Width Tolerance +0.008" to 0
  • Cone Backface ToClear Radius 0.09"
  • Cup Backface ToClear Radius 0.050"
  • Cone Frontface Backing Diameter 3.54"
  • Cone Backface Backing Diameter 3.07"
  • Cup Frontface Backing Diameter 4.12"
  • Cup Backface Backing Diameter 3.98"
  • Cage Cone Frontface Clearance 0.11"
  • Cage Cone Backface Clearance 0.05"
  • Effective Center Location -0.03"
  • System of Measurement Inch
  • Type Bearing
  • Cone Part Number 399A
  • Cup Part Number 394ARB
  • Bearing Type Roller
  • Roller Bearing Type Tapered
  • For Load Direction Combined
  • Construction Single Row
  • Seal Type Open
  • Cups Type Standard
  • Series 395
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Steel
  • Dynamic Radial Load 22200 lbf
  • Static Radial Load 28100 lbf
  • Dynamic Radial Rating(90 Million Revolutions)(C90) 5760 lbf
  • Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 3970 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 1.7 lb

Features

Performance Features of 399A-394ARB Bearing

399A-394ARB Bearing is crafted with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 22,200 lbf, ensuring reliable performance in demanding conditions.
The steel cage maintains proper roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs well in various environments.

How Is 399A-394ARB Bearing Engineered for Reliability?

399A-394ARB Bearing features precise cone and cup dimensions, enhancing load distribution and stability.
The tapered roller design efficiently handles both radial and thrust loads, improving overall performance.
Its standard radial clearance allows for smooth operation, reducing wear over time.
The ABEC-1 rating ensures consistent quality and precision in industrial applications.

Built for Durability: 399A-394ARB Bearing

399A-394ARB Bearing’s chrome steel construction provides excellent resistance to wear and fatigue.
The dynamic thrust rating of 3,970 lbf ensures reliable performance under heavy loads.
Its open design simplifies lubrication, maintaining optimal performance with minimal maintenance.
The bearing’s effective center location enhances alignment, reducing stress on components.

Steel vs Ceramic Bearings: Strengths of 399A-394ARB Bearing

399A-394ARB Bearing’s chrome steel rollers offer superior strength and durability compared to ceramic alternatives.
The bearing’s static radial load capacity of 28,100 lbf ensures long-term reliability in heavy-duty applications.
Its standard lubrication requirement keeps operational costs low while maintaining performance.
With a weight of 1.7 lb, it balances robustness and ease of installation.

Application

Common Applications of 399A-394ARB Bearing
The 399A-394ARB Bearing is widely used in heavy machinery, such as construction equipment and agricultural vehicles, where its tapered roller design handles combined loads effectively. Its chrome steel construction ensures durability in tough working conditions.

In automotive applications, 399A-394ARB Bearing is often found in wheel hubs and differential systems, providing reliable performance under varying loads. The inch sizing makes it compatible with many North American vehicle models.

For industrial gearboxes, 399A-394ARB Bearing’s open design allows for easy lubrication, extending service life in high-speed operations. The steel cage adds stability, reducing wear over time.

Where Is 399A-394ARB Bearing Used?
You’ll often spot 399A-394ARB Bearing in mining equipment, where its robust design handles heavy radial and thrust loads. The standard radial clearance ensures smooth operation even in dusty environments.

In conveyor systems, 399A-394ARB Bearing supports rollers, offering consistent performance under continuous use. Its ABEC-1 rating balances precision and cost-effectiveness for general industrial needs.

Built for Heavy-Duty Use: 399A-394ARB Bearing
The 399A-394ARB Bearing excels in forestry machinery, where its tapered rollers manage uneven loads from rough terrain. The chrome steel components resist wear, even in harsh weather conditions.

For pump systems, 399A-394ARB Bearing’s dynamic thrust rating ensures reliable operation under constant pressure. Its standard lubrication requirement simplifies maintenance routines.

Automotive vs Aerospace: Applications of 399A-394ARB Bearing
In automotive settings, 399A-394ARB Bearing is a go-to for drivetrain components, thanks to its balanced load capacity. The inch measurements fit seamlessly into legacy vehicle designs.

While not typically used in aerospace, 399A-394ARB Bearing finds its niche in ground support equipment, where durability matters more than ultra-lightweight materials. The temperature range suits most outdoor applications.

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