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Inch Size Miniature Ball Bearings SR4zz

Inch Size Miniature Ball Bearings SR4zz

The SR4zz is a small, shielded ball bearing with a 0.25″ bore and 0.625″ outer diameter, made entirely from stainless steel for durability. It handles radial loads up to 255 lbf and spins smoothly at speeds up to 34,200 RPM.

Its shielded design keeps dirt out while maintaining easy access for lubrication. With 8 stainless steel balls and a stainless steel cage, it offers reliable performance in various conditions.

This bearing operates in temperatures from -86°F to 230°F, making it versatile for different environments. Its compact size (0.196″ wide) and lightweight (4.54g) suit small machinery or precision instruments.

Ideal for applications like small motors or hobbyist projects where space is limited but performance matters. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number SR4zz
  • 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 0.25"
  • Bore Dia Tolerance -0.0003" to 0"
  • Outer Dia 0.625"
  • Outer Dia Tolerance -0.0003" to 0"
  • Width 0.196"
  • Width Tolerance -0.005" to 0"
  • Ball Dia 0.09370"
  • Ring Material Stainless Steel
  • Ball Material Stainless Steel
  • Cage Material Stainless Steel
  • Shield Material 300 Series Stainless Steel
  • Dynamic Radial Load 255 lbf
  • Static Radial Load 101 lbf
  • Max Speed 34200 rpm
  • Temperature Range -86 to 230 °F
  • Lubrication Required
  • RoHS Compliant
  • REACH Compliant
  • Weight 4.54 g
  • Price（$） 1.026
Inch Size Miniature Ball Bearings SR4zz dimension drawing
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Features

Why Choose SR4zz Bearing for Precision Tasks?

SR4zz Bearing is crafted with stainless steel rings and balls, ensuring high precision in radial load applications.
Its ABEC1 tolerance class guarantees consistent performance, ideal for miniature machinery.

The shielded design protects against contaminants while maintaining smooth operation.
With a dynamic radial load capacity of 255 lbf, it handles demanding tasks efficiently.

SR4zz Bearing operates at speeds up to 34,200 rpm, balancing speed and durability.
Its compact size of 0.25″×0.625″×0.196″ makes it perfect for space-constrained applications.

Application

Where Is SR4zz Bearing Used?
SR4zz Bearing is commonly used in small electric motors, such as those found in cooling fans or power tools, where its compact size and shielded design help keep dust out. The stainless steel construction ensures it can handle moderate loads without corroding.

In robotics, SR4zz Bearing provides smooth rotation for joints and small mechanisms, thanks to its precise ABEC1 tolerance. Its lightweight design makes it ideal for applications where every gram counts.

For medical devices like dental handpieces, SR4zz Bearing offers reliable performance with minimal maintenance. The shielded seals help maintain cleanliness, which is crucial in sterile environments.

Around the home, SR4zz Bearing can be found in appliances like blenders or printers, where quiet operation is important. Its durability means it lasts even with frequent use.

In hobbyist projects, such as RC cars or drones, SR4zz Bearing is a popular choice due to its balance of performance and affordability. The inch sizing makes it easy to source for DIY builds.

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