TS (Single Row Tapered Roller Bearings) (Imperial) 390-394CS

TS (Single Row Tapered Roller Bearings) (Imperial) 390-394CS

The 390-394CS is a single-row tapered roller bearing with a 2.25″ bore and 4.468″ outer diameter, crafted from durable chrome steel. It handles combined loads up to 22200 lbf radially and 3970 lbf in thrust, making it versatile for various applications.

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

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

Weighing 2.3 lb, it balances strength and manageability. Compliant with RoHS and REACH standards, it meets safety and environmental requirements.

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Product Parameters

  • Part Number 390-394CS
  • Brand TFL
  • Interchangeable Timken
  • Size 2.25" x 4.468" x 0.8661"
  • Bore Dia 2.25"
  • Bore Dia Tolerance +0.005" to 0
  • Outer Dia 4.468"
  • 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 2.6"
  • Cone Backface Backing Diameter 2.76"
  • Cup Frontface Backing Diameter 4.18"
  • Cup Backface Backing Diameter 4.02"
  • 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 390
  • Cup Part Number 394CS
  • 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 2.3 lb

Features

Performance Features of 390-394CS Bearing

390-394CS Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 22,200 lbf, making it suitable for heavy-duty applications.

The steel cage ensures proper roller alignment, reducing friction and extending operational life.
With a temperature range of -30° to 110°C, it performs reliably in various environments.

390-394CS Bearing requires lubrication, ensuring smooth operation and reduced wear over time.
Its standard radial clearance allows for flexibility in different industrial applications.

Application

Where Is 390-394CS Bearing Used?
In industrial settings, 390-394CS Bearing is commonly used in heavy machinery like conveyor systems and gearboxes, where its tapered roller design handles combined loads effectively. The chrome steel construction ensures durability in demanding environments.
For automotive applications, 390-394CS Bearing fits well in wheel hubs and transmissions, providing reliable performance under radial and thrust loads. Its imperial sizing makes it a preferred choice for North American vehicle models.
In agricultural equipment, 390-394CS Bearing supports components like tractor axles, where its robust design withstands rough terrain and heavy loads. The steel cage adds extra strength for long-term use.

Key Fields for 390-394CS Bearing
Construction equipment benefits from 390-394CS Bearing in components like excavator swing drives, where its high load capacity is essential. The open design allows for easy lubrication, extending service life.
Mining machinery often relies on 390-394CS Bearing for crushers and screens, thanks to its ability to handle shock loads. The standard radial clearance ensures smooth operation even in harsh conditions.
Railway applications use 390-394CS Bearing in axle boxes, where its tapered rollers manage both radial and axial forces. The ABEC-1 rating provides sufficient precision for these heavy-duty uses.

How Does 390-394CS Bearing Support High-Speed Operations?
In wind turbines, 390-394CS Bearing is used in gearboxes to manage high-speed rotations and variable loads. Its dynamic radial load rating of 22,200 lbf ensures reliability in continuous operation.
For pumps and compressors, 390-394CS Bearing’s tapered roller design reduces friction, improving efficiency. The temperature range of -30° to 110°C makes it suitable for diverse operating conditions.
In material handling systems, 390-394CS Bearing supports rollers and pulleys, where its combined load capacity keeps operations running smoothly. The steel cage prevents roller skewing, maintaining alignment.

Built for Heavy-Duty Use: 390-394CS Bearing
Off-road vehicles depend on 390-394CS Bearing for drivetrain components, where its rugged construction handles shocks and vibrations. The inch sizing simplifies replacements in older machinery.
Industrial fans use 390-394CS Bearing in shafts, benefiting from its static radial load capacity of 28,100 lbf. The open seal type allows for easy inspection and maintenance.
In steel mills, 390-394CS Bearing is found in rolling mills, where its tapered rollers distribute loads evenly. The chrome steel material resists wear, even under extreme heat and pressure.

Automotive vs Aerospace: Applications of 390-394CS Bearing
In automotive drivetrains, 390-394CS Bearing is ideal for differentials, offering a balance of strength and precision. The Timken interchangeability simplifies sourcing for repairs.
For aerospace ground equipment, 390-394CS Bearing is used in tow tractors and loaders, where its imperial sizing matches industry standards. The combined load capability ensures versatility across applications.
While not suited for in-flight use, 390-394CS Bearing excels in support machinery like hydraulic lifts. Its dynamic thrust rating of 3,970 lbf provides reliable performance in ground operations.

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