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Miniature Flanged Ball Bearings With Extended Inner Ring SFRW4zz

The SFRW4zz is a compact, flanged ball bearing measuring 0.25″ in bore and 0.625″ in outer diameter, with a slim width of just 0.196″. Made entirely from stainless steel, it’s built to resist corrosion and wear.

This bearing handles radial loads up to 255 lbf and spins at speeds up to 99,000 RPM, making it suitable for high-speed applications. Its shielded design helps keep dirt out while maintaining smooth operation.

The extended inner ring and flange provide secure mounting, ideal for small assemblies where space is limited. It requires lubrication for optimal performance.

Perfect for precision instruments or small machinery, it operates in temperatures from -86°F to 230°F. Compliant with RoHS and REACH standards, it’s a reliable choice for various lightweight applications.

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Description

Features

Application

Q&A

Product Parameters

Part Number SFRW4zz
Brand TFL
Interchangeable EZO
System of Measurement Inch
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"
Flange Outer Dia 0.69"
Flange Thickness 0.042"
External Diameter On Inner Ring 0.364"
Inner Ring Width 0.2273"
Ball Qty 8
Ball Dia 0.0937"
Radial Clearance 0.00008" to 0.0005"
Bearing Type Ball
For Load Direction Radial
Construction Single Row
Inner Ring Type Extended
Seal Type Shielded
Tolerance Class ABEC1
Radial Clearance Trade No MC3
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
Temperature Range -86 to 230 °F
Lubrication Required
RoHS Compliant
REACH Compliant
Max Speed 99000 rpm
Weight 0.20 g
Price（$） 3.942

Features

How Does SFRW4zz Bearing Reduce Friction?

SFRW4zz Bearing features stainless steel construction, ensuring smooth operation with minimal friction.
Its shielded design protects against contaminants while maintaining efficient performance.

The precision-engineered ball bearings and extended inner ring enhance stability during high-speed rotation.
With a maximum speed of 99,000 rpm, it delivers reliable performance in compact applications.

SFRW4zz Bearing’s ABEC1 tolerance class ensures consistent quality and reduced vibration.
Its lightweight design at just 0.20 g makes it ideal for miniature applications.

Application

Key Fields for SFRW4zz Bearing
SFRW4zz Bearing works well in small gadgets like printers and cameras, where its compact size and shielded design keep dust out. The stainless steel construction also helps it last longer in everyday use.

In robotics, SFRW4zz Bearing fits neatly into joints and small moving parts, thanks to its extended inner ring. The lightweight design ensures smooth movement without adding bulk.

For medical tools like dental handpieces, SFRW4zz Bearing offers reliable performance with its ABEC1 precision. The shielded seals protect against contaminants, making it ideal for clean environments.

You’ll often find SFRW4zz Bearing in hobbyist projects, such as model trains or drones, where its small flange provides easy mounting. The high-speed capability makes it a handy choice for DIY enthusiasts.

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