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Inch Size Miniature Ball Bearings SR166

Inch Size Miniature Ball Bearings SR166

The SR166 is a compact inch-sized ball bearing, measuring just 0.1875″ in bore diameter and 0.375″ in outer diameter, with a slim width of 0.125″. Made entirely from stainless steel, it offers good resistance to rust and wear.

This single-row bearing handles radial loads up to 122 lbf and spins smoothly at speeds up to 45,000 RPM. Its open design allows for easy lubrication, though regular maintenance is needed for optimal performance.

With ABEC1 precision and MC3 clearance, it provides reliable operation in various conditions. The bearing works well in temperatures from -86°F to 230°F.

Ideal for small machinery, hobby projects, or precision instruments where space is limited. Weighing only 0.81g, it’s lightweight yet durable for its size. Compliant with RoHS and REACH standards.

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Product Parameters

  • Part Number SR166
  • 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 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 Stainless Steel
  • Ball Material Stainless Steel
  • Cage Material Stainless Steel
  • Dynamic Radial Load 122 lbf
  • Static Radial Load 44 lbf
  • Max Speed 45000 rpm
  • Temperature Range -86 to 230 °F
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Weight 0.81 g
  • Price（$） 1.242
Inch Size Miniature Ball Bearings SR166 dimension drawing
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Features

Why Choose SR166 Bearing for Precision Tasks?

SR166 Bearing is crafted with stainless steel rings and balls, ensuring smooth radial load handling.
Its compact size of 0.1875″×0.375″×0.125″ makes it ideal for miniature applications.
The open design allows for easy lubrication, maintaining performance in various conditions.
With a maximum speed of 45,000 rpm, it delivers reliable and efficient operation.

Application

Common Applications of SR166 Bearing
SR166 Bearing is widely used in small electric motors, where its compact size and stainless steel construction ensure reliable performance. The open design makes it easy to lubricate, extending its lifespan in continuous operation.

In robotics, SR166 Bearing fits perfectly in joint mechanisms, offering smooth movement with minimal friction. Its ABEC1 tolerance provides enough precision for most lightweight automation tasks.

For medical devices like dental tools, SR166 Bearing’s corrosion-resistant materials are ideal for frequent sterilisation. The small form factor allows it to fit into tight spaces without compromising durability.

You’ll also find SR166 Bearing in precision instruments, where its low radial clearance ensures accurate readings. The lightweight design is a bonus for portable equipment.

In consumer electronics, SR166 Bearing works well in cooling fans and small drives. Its ability to handle high speeds makes it a dependable choice for everyday gadgets.

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