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Inch Size Miniature Flanged Ball Bearings FR155

Inch Size Miniature Flanged Ball Bearings FR155

The FR155 is a miniature flanged ball bearing with a 0.15625″ bore and 0.3125″ outer diameter, crafted from durable chrome steel. Its compact size (0.359″ flange diameter) makes it suitable for tight spaces, while handling radial loads up to 69 lbf.

With a maximum speed of 53,000 RPM, it spins smoothly for small, high-speed applications. The open design allows easy lubrication, and the stainless steel cage ensures reliable performance.

The flange provides secure mounting, preventing slippage during operation. Ideal for use in small motors, drones, or precision instruments where space and stability matter.

Weighing just 0.56g, it’s lightweight yet robust. Compliant with RoHS and REACH standards, it operates in temperatures from -86°F to 230°F.

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Product Parameters

  • Part Number FR155
  • 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 10
  • Bore Dia 0.15625"
  • Bore Dia Tolerance -0.0003" to 0"
  • Outer Dia 0.3125"
  • Outer Dia Tolerance -0.0003" to 0"
  • Width 0.1094"
  • Width Tolerance -0.005" to 0"
  • Flange Outer Dia 0.359"
  • Flange Thickness 0.023"
  • Ball Dia 0.03941"
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Stainless Steel
  • Dynamic Radial Load 69 lbf
  • Static Radial Load 27 lbf
  • Max Speed 53000 rpm
  • Temperature Range -86 to 230 °F
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Weight 0.56 g
  • Price（$） 1.0935
Inch Size Miniature Flanged Ball Bearings FR155 dimension drawing
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Features

How Does FR155 Bearing Reduce Friction?

FR155 Bearing features chrome steel rings and balls, ensuring smooth operation with minimal friction.

Its dynamic radial load capacity of 69 lbf makes it suitable for various applications.

The stainless steel cage maintains ball alignment, reducing wear and extending lifespan.

With a maximum speed of 53,000 rpm, it offers efficient performance in miniature designs.

Application

Industrial Uses of FR155 Bearing
FR155 Bearing is commonly used in small industrial equipment like conveyor rollers and packaging machines, where its compact size and flanged design help maintain alignment. The chrome steel construction ensures durability even in continuous operation.

Where Is FR155 Bearing Used?
You’ll often find FR155 Bearing in precision instruments like dental drills or lab equipment, thanks to its smooth radial load handling. Its lightweight design makes it ideal for applications where space and weight are critical factors.

Perfect Fit for Automation: FR155 Bearing
FR155 Bearing works well in robotic arms and 3D printers, providing reliable performance in high-speed movements. The open seal design allows for easy lubrication, extending its service life in demanding environments.

Automotive vs Aerospace: Applications of FR155 Bearing
In automotive systems, FR155 Bearing supports small electric motors and sensors, while in aerospace, it’s used in instrumentation panels. Its inch sizing makes it versatile for various precision applications.

Essential Roles of FR155 Bearing
FR155 Bearing is a go-to choice for consumer electronics like cooling fans and printers, where quiet operation is key. The stainless steel cage adds corrosion resistance, making it suitable for humid conditions.

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