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Inch Size Miniature Ball Bearings R166zz

Inch Size Miniature Ball Bearings R166zz

The R166zz is a compact inch-sized miniature ball bearing, measuring 0.1875″ by 0.375″ by 0.125″. Made from chrome steel with stainless steel shields, it’s built for radial loads and offers smooth rotation.

With a dynamic radial load capacity of 136 lbf, it handles moderate forces while spinning at speeds up to 50,000 RPM. The shielded design keeps dust out without needing frequent maintenance.

Its ABEC1 tolerance ensures reliable performance for everyday applications. The bearing is pre-lubricated and works in temperatures from -86°F to 230°F.

Ideal for small machinery, hobby projects, or precision instruments where space is limited. Weighing just 0.85g, it’s lightweight yet durable for its size. Compliant with RoHS and REACH standards.

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Product Parameters

  • Part Number R166zz
  • Brand TFL
  • System of Measurement Inch
  • Bearing Type Ball
  • For Load Direction Radial
  • Construction Single Row
  • Inner Ring Type Standard
  • Seal Type Shielded
  • Tolerance Class ABEC1
  • Radial Clearance Trade No MC3
  • Radial Clearance 0.00008" to 0.0005"
  • Ball Qty 8
  • Bore Dia 0.1875"
  • Bore Dia Tolerance -0.0003" to 0"
  • Outer Dia 0.375"
  • Outer Dia Tolerance -0.0003" to 0"
  • Width 0.125"
  • Width Tolerance -0.005" to 0"
  • Ball Dia 0.06252"
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Stainless Steel
  • Shield Material 300 Series Stainless Steel
  • Dynamic Radial Load 136 lbf
  • Static Radial Load 49 lbf
  • Max Speed 50000 rpm
  • Temperature Range -86 to 230 °F
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Weight 0.85 g
  • Price（$） 1.035
Inch Size Miniature Ball Bearings R166zz dimension drawing
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Features

How Does R166zz Bearing Reduce Friction?

R166zz Bearing features chrome steel rings and balls, designed to minimise friction during operation.
Its shielded design helps keep contaminants out, ensuring smoother performance over time.

The stainless steel cage maintains proper ball alignment, reducing wear and extending service life.
With a maximum speed of 50,000 rpm, it delivers efficient performance in compact applications.

R166zz Bearing operates in temperatures from -86 to 230°F, making it versatile for various environments.
Its dynamic radial load capacity of 136 lbf ensures reliable performance under stress.

Application

Where Is R166zz Bearing Used?
R166zz Bearing is commonly found in small electric motors and precision instruments, thanks to its compact inch size and shielded design. The stainless steel shields help keep contaminants out while maintaining smooth rotation.

In consumer electronics like printers and small fans, R166zz Bearing provides reliable performance with minimal noise. Its ABEC1 tolerance ensures consistent operation in everyday devices where precision matters.

For hobbyist projects such as model cars or drones, R166zz Bearing’s lightweight design and radial load capacity make it a handy component. The chrome steel construction offers durability without adding unnecessary bulk.

Automation equipment often uses R166zz Bearing in compact assemblies where space is limited. The shielded design helps extend service life by protecting against dust and debris in busy industrial environments.

Q&A

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