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Inch Size Miniature Ball Bearings R155

Inch Size Miniature Ball Bearings R155

The R155 is a miniature ball bearing with a compact size of 0.15625″×0.3125″×0.1094″, crafted from durable chrome steel. It supports radial loads up to 69 lbf and can spin at speeds up to 53,000 RPM.

Its open design and stainless steel cage ensure smooth operation, while the ABEC1 tolerance class provides reliable precision. The bearing requires lubrication for optimal performance.

With a temperature range of -86 to 230°F, it’s suitable for various environments. Ideal for small devices like precision instruments or hobbyist projects where space is limited.

Weighing just 0.51g, it’s lightweight yet sturdy. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number R155
  • 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"
  • 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 0.51 g
  • Price（$） 1.035
Inch Size Miniature Ball Bearings R155 dimension drawing
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Features

How Does R155 Bearing Reduce Friction?

R155 Bearing features chrome steel rings and balls, designed to minimise friction during operation.
Its precision construction ensures smooth radial load handling, with a dynamic radial load capacity of 69 lbf.

The stainless steel cage maintains ball alignment, reducing wear and enhancing longevity.
With a maximum speed of 53,000 rpm, it delivers reliable performance in compact applications.

R155 Bearing operates efficiently within a wide temperature range of -86 to 230 °F.
Its open design allows for easy lubrication, ensuring consistent performance over time.

Application

What Industries Rely on R155 Bearing?
R155 Bearing is commonly used in small industrial equipment, such as miniature motors and precision instruments, where its compact size and radial load capacity are beneficial. The open design simplifies lubrication, ensuring smooth operation in tight spaces.

In consumer electronics, R155 Bearing can be found in devices like small fans and handheld tools, offering reliable performance with minimal maintenance. Its inch sizing makes it a good fit for products designed to US standards.

For automation projects, R155 Bearing works well in lightweight robotic arms or 3D printers, thanks to its low friction and high-speed capability. The chrome steel construction ensures durability even with frequent use.

Medical devices like dental tools or lab equipment often use R155 Bearing for its precision and consistent performance. The stainless steel cage adds extra resistance to wear in sterile environments.

Q&A

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