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Inch Size Miniature Ball Bearings SR188 2rs

Inch Size Miniature Ball Bearings SR188 2rs

The SR188 2rs is a miniature ball bearing with a 0.25″ bore and 0.5″ outer diameter, crafted entirely from stainless steel for durability. It handles radial loads up to 186 lbf and spins smoothly at speeds up to 36,000 RPM.

Its sealed design with nitrile rubber shields keeps dirt out and grease in, making it low-maintenance. The stainless steel cage ensures smooth operation and long life, even in demanding conditions.

This bearing is ideal for small machinery, hobby projects, or precision instruments where space is limited. It performs well in temperatures from -86°F to 230°F, suitable for various environments.

Weighing just 2.32g, it’s lightweight yet robust. Compliant with RoHS and REACH standards, it’s a reliable choice for both industrial and DIY applications.

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Product Parameters

  • Part Number SR188 2rs
  • Brand TFL
  • System of Measurement Inch
  • Bearing Type Ball
  • For Load Direction Radial
  • Construction Single Row
  • Inner Ring Type Standard
  • Seal Type Sealed
  • Tolerance Class ABEC1
  • Radial Clearance Trade No MC3
  • Radial Clearance 0.00008" to 0.0005"
  • Ball Qty 8
  • Bore Dia 0.25"
  • Bore Dia Tolerance -0.0003" to 0"
  • Outer Dia 0.5"
  • Outer Dia Tolerance -0.0003" to 0"
  • Width 0.1875"
  • Width Tolerance -0.005" to 0"
  • Ball Dia 0.07870"
  • Ring Material Stainless Steel
  • Ball Material Stainless Steel
  • Cage Material Stainless Steel
  • Shield Material Nitrile Rubber
  • Dynamic Radial Load 186 lbf
  • Static Radial Load 72 lbf
  • Max Speed 36000 rpm
  • Temperature Range -86 to 230 °F
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Weight 2.32 g
  • Price（$） 1.242
Inch Size Miniature Ball Bearings SR188 2rs dimension drawing
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Features

How Does SR188 2rs Bearing Reduce Friction?

SR188 2rs Bearing features stainless steel rings and balls, ensuring smooth operation with minimal friction.
Its sealed design with nitrile rubber shields keeps contaminants out, maintaining consistent performance.

The ABEC1 tolerance class ensures precision, making it suitable for high-speed applications up to 36,000 rpm.
With a dynamic radial load capacity of 186 lbf, it handles demanding tasks efficiently.

The stainless steel cage aligns the 8 balls perfectly, reducing wear and extending the bearing’s lifespan.
Its compact size (0.25″×0.5″×0.1875″) makes it ideal for miniature applications.

Application

Common Applications of SR188 2rs Bearing
SR188 2rs Bearing is commonly used in small electric motors, such as those found in handheld power tools or cooling fans. Its sealed design helps keep out dust and debris, making it reliable in everyday use.

In robotics, SR188 2rs Bearing provides smooth rotation for joints and small actuators, thanks to its stainless steel construction. The compact inch size makes it easy to fit into tight spaces without compromising performance.

For medical devices like dental tools or lab equipment, SR188 2rs Bearing offers consistent performance with minimal maintenance. The nitrile rubber seal ensures cleanliness, which is essential in sensitive environments.

Around the home, SR188 2rs Bearing can be found in appliances like blenders or printers, where quiet operation is appreciated. Its lightweight design and durability make it a practical choice for frequent use.

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