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Miniature Ball Bearings with Extended Inner Ring RW144

Miniature Ball Bearings with Extended Inner Ring RW144

The RW144 is a compact miniature ball bearing with a 0.125″ bore and 0.25″ outer diameter, crafted from sturdy chrome steel. It supports radial loads up to 54 lbf and spins smoothly at speeds up to 67,000 RPM.

The extended inner ring design makes it easier to handle and install, while the open seal allows for simple lubrication. Its stainless steel cage ensures durability and consistent performance.

With a temperature range of -86°F to 230°F, it’s suitable for various environments. The bearing is ABEC1 rated, offering reliable precision for small applications.

Ideal for use in small motors, medical devices, or precision instruments where space is limited. Weighing just 0.40g, it’s lightweight yet robust for its size. Compliant with RoHS and REACH standards.

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Product Parameters

  • Part Number RW144
  • Brand TFL
  • Interchangeable EZO
  • 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"
  • External Diameter On Inner Ring 0.161"
  • Inner Ring Width 0.125"
  • Ball Qty 7
  • Ball Dia 0.0394"
  • Radial Clearance 0.00008" to 0.0005"
  • System of Measurement Inch
  • Seal Type Open
  • Bearing Type Ball
  • For Load Direction Radial
  • Construction Single Row
  • Inner Ring Type Extended
  • Tolerance Class ABEC1
  • Radial Clearance Trade No MC3
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Stainless Steel
  • Dynamic Radial Load 54 lbf
  • Static Radial Load 17 lbf
  • Temperature Range -86 to 230 °F
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Max Speed 67000 rpm
  • Weight 0.40 g
  • Price（$） 2.655
Miniature Ball Bearings with Extended Inner Ring RW144 dimension drawing
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Features

Performance Features of RW144 Bearing

RW144 Bearing is crafted with chrome steel rings and balls, offering reliable performance in radial load applications.
Its dynamic radial load capacity of 54 lbf ensures smooth operation in compact spaces.

The extended inner ring design of RW144 Bearing simplifies mounting and alignment in precision assemblies.
With a maximum speed of 67,000 rpm, it delivers efficient performance for high-speed applications.

RW144 Bearing operates within a wide temperature range of -86 to 230 °F, making it versatile for various environments.
The stainless steel cage maintains ball alignment, reducing friction and extending service life.

Application

Common Applications of RW144 Bearing
RW144 Bearing is commonly used in small electric motors, where its compact size and extended inner ring help with easy mounting. The open design allows for straightforward lubrication, ensuring smooth operation in high-speed applications.

Where Is RW144 Bearing Used?
You’ll often find RW144 Bearing in precision instruments like dental drills or optical devices, thanks to its reliable radial load handling. Its chrome steel construction makes it durable even in demanding environments.

Ideal for Precision: RW144 Bearing
RW144 Bearing works well in miniature robotics, where its tight tolerances and low friction are key. The stainless steel cage adds extra durability, making it a solid choice for long-term use.

Automotive vs Aerospace: Applications of RW144 Bearing
In automotive models, RW144 Bearing fits well in small gearboxes or sensors due to its lightweight design. For aerospace, its temperature resistance makes it suitable for compact avionics systems.

Practical Applications of RW144 Bearing
RW144 Bearing is a go-to for hobbyist projects like RC cars or drones, where its small size and performance shine. The inch measurements also make it easy to source for DIY builders.

Q&A

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