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Inch Size Miniature Ball Bearings R144

Inch Size Miniature Ball Bearings R144

The R144 is a miniature ball bearing with a compact size of 0.125″×0.25″×0.0937″, made from durable chrome steel. It handles radial loads up to 54 lbf and spins smoothly at speeds up to 67,000 RPM.

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

With an ABEC1 tolerance class, it offers good precision for small applications. Ideal for use in miniature machinery, model making, or precision instruments where space is limited.

Weighing just 0.27g, it’s lightweight yet sturdy. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number R144
  • 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 0.125"
  • 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 0.27 g
  • Price（$） 1.035
Inch Size Miniature Ball Bearings R144 dimension drawing
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Features

Why Choose R144 Bearing for Precision Tasks?

R144 Bearing is crafted with chrome steel rings and balls, ensuring precise radial load handling.
Its compact size of 0.125″×0.25″×0.0937″ makes it ideal for miniature applications requiring accuracy.

The stainless steel cage maintains ball alignment, reducing friction and enhancing smooth operation.
With a maximum speed of 67,000 rpm, it delivers reliable performance in high-speed settings.

R144 Bearing operates efficiently in temperatures ranging from -86 to 230 °F.
Its ABEC1 tolerance class ensures consistent performance for precision tasks.

Application

Common Applications of R144 Bearing
R144 Bearing is widely 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 simplifies lubrication, ensuring smooth operation in tight spaces.

In the automotive sector, R144 Bearing fits well in components like dashboard controls and small actuators, thanks to its inch sizing and reliable performance. Its chrome steel construction also handles moderate loads without compromising durability.

For consumer electronics, R144 Bearing works efficiently in devices like computer fans and small printers, where low noise and consistent rotation are key. The lightweight design makes it ideal for portable gadgets requiring long-term reliability.

Medical devices, such as handheld diagnostic tools, benefit from R144 Bearing’s precision and resistance to wear. The stainless steel cage ensures cleanliness, which is vital in sensitive healthcare environments.

Automation systems, including small robotic arms, rely on R144 Bearing for smooth movement and accurate positioning. Its high-speed capability makes it suitable for repetitive tasks in manufacturing setups.

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