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Inch Size Miniature Ball Bearings R1-4

Inch Size Miniature Ball Bearings R1-4

The R1-4 is a miniature ball bearing with a tiny 0.07813″ bore and 0.25″ outer diameter, crafted from sturdy chrome steel. It handles radial loads up to 54 lbf and spins smoothly at speeds up to 67,000 RPM.

Its open design makes lubrication easy, while the stainless steel cage ensures durability. The bearing operates well in temperatures from -86°F to 230°F.

With ABEC1 precision and MC3 radial clearance, it offers reliable performance in compact spaces. Ideal for small devices like precision instruments or miniature motors.

Weighing just 0.4g, it’s lightweight yet robust for its size. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number R1-4
  • Brand TFL
  • System of Measurement Inch
  • Bearing Type Ball
  • For Load Direction Radial
  • Construction Single Row
  • Inner Ring Type Standard
  • Seal Type Open
  • Tolerance Class ABEC1
  • Radial Clearance Trade No MC3
  • Radial Clearance 0.00008" to 0.0005"
  • Ball Qty 7
  • Bore Dia 0.07813"
  • Bore Dia Tolerance -0.0003" to 0"
  • Outer Dia 0.25"
  • Outer Dia Tolerance -0.0003" to 0"
  • Width 0.0937"
  • Width Tolerance -0.005" to 0"
  • Ball Dia 0.03941"
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Stainless Steel
  • Dynamic Radial Load 54 lbf
  • Static Radial Load 17 lbf
  • Max Speed 67000 rpm
  • Temperature Range -86 to 230 °F
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Weight 0.4 g
  • Price（$） 1.755
Inch Size Miniature Ball Bearings R1-4 dimension drawing
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Features

Why Choose R1-4 Bearing for Precision Tasks?

R1-4 Bearing is crafted with chrome steel rings and balls, ensuring precise radial load handling.
Its compact size of 0.07813″×0.25″×0.0937″ makes it ideal for miniature applications.
The stainless steel cage maintains ball alignment, reducing friction and enhancing durability.
With a maximum speed of 67,000 rpm, it delivers reliable performance in high-speed operations.

Application

What Makes R1-4 Bearing a Preferred Choice?
R1-4 Bearing is commonly used in small-scale industrial equipment, like precision instruments and miniature motors, where its compact size and radial load capacity are beneficial. The open design simplifies lubrication, ensuring smooth operation in tight spaces.

In consumer electronics, R1-4 Bearing fits well in devices such as miniature fans or small printers, thanks to its lightweight construction and reliable performance. Its inch sizing makes it a convenient option for manufacturers following imperial measurements.

For automation projects, R1-4 Bearing works effectively in robotic arms or 3D printers, where low friction and high-speed capabilities are key. The chrome steel rings and stainless steel cage provide durability without adding unnecessary weight.

Medical devices like handheld diagnostic tools often use R1-4 Bearing due to its precise tolerances and consistent performance. The wide temperature range also makes it suitable for various clinical environments.

Q&A

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