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Inch Size Miniature Ball Bearings R1

Inch Size Miniature Ball Bearings R1

The R1 is a miniature ball bearing with a tiny 0.05556″ bore and 0.1875″ outer diameter, crafted from durable chrome steel. It handles radial loads up to 44 lbf and spins smoothly at speeds up to 90,000 RPM.

Its open design requires lubrication but allows for easy maintenance, while the stainless steel cage ensures reliable performance. The bearing operates in temperatures from -86°F to 230°F, making it versatile for various conditions.

With six chrome steel balls and ABEC1 tolerance, it offers consistent performance for small-scale applications. Ideal for precision instruments or small machinery where space is limited.

Weighing just 0.15g, it’s lightweight yet robust. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number R1
  • 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 6
  • Bore Dia 0.05556"
  • Bore Dia Tolerance -0.0003" to 0"
  • Outer Dia 0.1875"
  • Outer Dia Tolerance -0.0003" to 0"
  • Width 0.0781"
  • 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 44 lbf
  • Static Radial Load 12 lbf
  • Max Speed 90000 rpm
  • Temperature Range -86 to 230 °F
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Weight 0.15 g
  • Price（$） 12.15
Inch Size Miniature Ball Bearings R1 dimension drawing
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Features

Why Choose R1 Bearing for Precision Tasks?

R1 Bearing is crafted with chrome steel rings and balls, ensuring precise radial load handling.
Its compact size of 0.05556″×0.1875″×0.0781″ makes it ideal for miniature applications.

The stainless steel cage maintains ball alignment, reducing friction and enhancing accuracy.
With a maximum speed of 90,000 rpm, it delivers reliable performance in high-speed scenarios.

R1 Bearing operates in temperatures from -86 to 230 °F, suitable for varied environments.
Its ABEC1 tolerance class ensures consistent precision for demanding tasks.

Application

Where Is R1 Bearing Used?
R1 Bearing is commonly used in small-scale industrial equipment, such as precision instruments and miniature motors, where its compact size and radial load capacity are beneficial. The open design allows for easy lubrication, ensuring smooth operation in tight spaces.

In automotive applications, R1 Bearing fits well in components like fuel pumps and small gear systems, thanks to its inch sizing and durability. Its chrome steel construction handles moderate loads while maintaining reliability over time.

For consumer electronics, R1 Bearing works efficiently in devices like small fans and printers, where low noise and high-speed performance are key. The lightweight design and ABEC1 tolerance make it a practical choice for everyday gadgets.

Medical devices, such as dental tools and lab equipment, also benefit from R1 Bearing’s precision and resistance to wear. The stainless steel cage adds longevity, even in sterilisation processes.

Automation systems, including robotic arms and 3D printers, rely on R1 Bearing for smooth, consistent movement. Its high-speed capability and minimal maintenance needs make it ideal for repetitive tasks.

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