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Inch Size Miniature Ball Bearings SR1-4 2rs

Inch Size Miniature Ball Bearings SR1-4 2rs

The SR1-4 2rs is a miniature radial ball bearing, measuring just 0.078″ in bore and 0.25″ in outer diameter. Made entirely of stainless steel, it’s lightweight at 0.53g and designed for small, precise applications.

With a sealed design using nitrile rubber, it keeps dirt out and lubrication in, making it low-maintenance. It handles radial loads up to 49 lbf and spins smoothly at speeds over 60,000 RPM.

Its ABEC1 tolerance ensures reliable performance in tight spaces. Ideal for small motors, medical devices, or delicate instruments where precision is key.

The bearing operates in temperatures from -86°F to 230°F and meets RoHS and REACH standards for safety. A practical choice for compact, high-speed needs.

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Product Parameters

  • Part Number SR1-4 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 7
  • Bore Dia 0.07813"
  • Bore Dia Tolerance -0.0003" to 0"
  • Outer Dia 0.25"
  • Outer Dia Tolerance -0.0003" to 0"
  • Width 0.1406"
  • Width Tolerance -0.005" to 0"
  • Ball Dia 0.03941"
  • Ring Material Stainless Steel
  • Ball Material Stainless Steel
  • Cage Material Stainless Steel
  • Shield Material Nitrile Rubber
  • Dynamic Radial Load 49 lbf
  • Static Radial Load 15 lbf
  • Max Speed 60300 rpm
  • Temperature Range -86 to 230 °F
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Weight 0.53 g
  • Price（$） 2.106
Inch Size Miniature Ball Bearings SR1-4 2rs dimension drawing
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Features

Why Choose SR1-4 2rs Bearing for Precision Tasks?

SR1-4 2rs Bearing is crafted with stainless steel rings and balls, ensuring precise radial load handling.
Its compact size of 0.07813″×0.25″×0.1406″ makes it ideal for miniature applications.
The sealed design with nitrile rubber shields protects against contaminants, enhancing durability.
With a maximum speed of 60,300 rpm, it delivers smooth performance in high-speed operations.

Application

Where Is SR1-4 2rs Bearing Used?
SR1-4 2rs Bearing is commonly used in small electric motors, such as those found in drones or RC cars, where its compact size and sealed design prevent dust ingress. The stainless steel construction ensures longevity even in humid conditions.

In medical devices like dental handpieces, SR1-4 2rs Bearing provides smooth rotation thanks to its precision ABEC1 rating. The nitrile rubber seal also helps keep contaminants out, maintaining hygiene standards.

For consumer electronics, SR1-4 2rs Bearing is ideal in devices like cooling fans or small printers, where low noise and reliability are key. Its inch sizing makes it compatible with many North American and UK-made components.

Automation systems benefit from SR1-4 2rs Bearing in applications like robotic arms, where its high-speed capability and radial load handling shine. The stainless steel cage adds durability for continuous operation.

Q&A

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