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TFL BEARINGS
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Drawn Cup Needle Roller Bearings BK0408

Drawn Cup Needle Roller Bearings BK0408

The BK0408 is a compact drawn cup needle roller bearing with a 4mm bore and 8mm outer diameter, crafted from sturdy steel for reliable performance. It handles radial loads up to 401 lbf and spins efficiently at speeds up to 42,500 RPM.
Its open, single-row design with a press-fit shaft mount ensures easy installation and maintenance. The steel cage provides durability, while the closed-end series offers added protection.
This bearing requires regular lubrication to maintain smooth operation. It works well in temperatures ranging from -20°C to 110°C, making it suitable for various environments.
Ideal for applications like small gearboxes, automotive components, or machinery where space is limited. Compliant with RoHS standards, it’s a practical choice for radial load scenarios.

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Product Parameters

  • Part Number BK0408
  • Brand TFL
  • Interchangeable INA
  • Bore Dia 4 mm
  • Bore Dia Tolerance +10-+28 °Cm
  • Outer Dia 8 mm
  • Outer Dia Tolerance Not Rated
  • Width 8 mm
  • Width Tolerance -0.3mm to 0mm
  • System of Measurement Metric
  • Bearing Type Roller
  • Roller Bearing Type Needle
  • For Load Direction Radial
  • Construction Single Row
  • Seal Type Open
  • Series Closed End
  • Ring Material Steel
  • Ball Material Steel
  • Cage Material Steel
  • Dynamic Radial Load 401 lbf
  • Static Radial Load 294 lbf
  • Lubrication Required
  • Shaft Mount Type Press Fit
  • Temperature Range -20 to 110 °C
  • RoHS Compliant
  • Max Speed 42500 rpm
  • Weight 1.6 g
Drawn Cup Needle Roller Bearings BK0408 dimension drawing
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Features

How Does BK0408 Bearing Reduce Friction?
BK0408 Bearing features a drawn cup design with steel rollers, ensuring smooth radial load handling.
Its press-fit shaft mount type simplifies installation, saving time and effort.
The dynamic radial load capacity of 401 lbf makes BK0408 Bearing suitable for high-speed applications.
With a maximum speed of 42,500 rpm, it maintains efficiency without compromising durability.
BK0408 Bearing operates within a temperature range of -20 to 110°C, adapting to various environments.
Regular lubrication ensures consistent performance and extends its service life.

Application

Where Is BK0408 Bearing Used?
BK0408 Bearing is commonly found in small industrial equipment, such as compact gearboxes and electric motors, where its needle roller design handles radial loads efficiently. The press-fit mounting ensures a secure installation in tight spaces.
In automotive applications, BK0408 Bearing works well in components like throttle valves and fuel pumps, offering reliable performance under high-speed conditions. Its steel construction provides durability in demanding environments.
For consumer electronics, BK0408 Bearing fits neatly into devices like printers and small fans, where its compact size and smooth operation are key. The open design allows for easy lubrication, extending its service life.

Q&A

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