FR188zz Miniature Bearing
Price $ 1.35
Part Number FR188zz
System of Measurement Inch
Bearing Type Ball
For Load Direction Radial
Construction Single Row
Seal Type Shielded
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"
Flange Outer Dia 0.547"
Flange Thickness 0.045"
Ring Material 52100 Chrome Steel
Ball Material 52100 Chrome Steel
Cage Material 300 Series Stainless Steel
Shield Material 300 Series Stainless Steel
Dynamic Radial Load 344 lbf
Static Radial Load 80 lbf
Max Speed (X1000 rpm) 40
Lubrication Required
Shaft Mount Type Press Fit
Temperature Range -86 to 230 °F
ABEC Rating ABEC1 (Available in ABEC3/5/7)
Radial Clearance Trade No. MC3 (Available in MC1/2/4/5/6)
Radial Clearance 0.00008" to 0.0005"
RoHS Compliant
REACH Compliant
Ball Dia 0.07870"
Ball Qty 8
Weight 2.54 g
More Technical Information
FR188zz Miniature Bearing cad drawing

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FR188zz miniature ball bearing has deep groove geometry for high speeds and supporting both radial and axial loads. FR188zz bore dia is 0.25". Its out dia is 0.5". FR188zz ball material is 52100 Chrome Steel. Its seal type is Shielded. This FR188zz miniature bearing is for use in applications that involve combined radial and axial loads and a need for high running accuracy at high rotational speeds. 

Typical applications include:

Motors, Flow Meters, Medical Instruments, Vacuum Pumps, Robotics Industry, Crossbow, Food & Beverage Industry, Automation & Industry, Anemometer, ATMs & Card Readers, Galvanometers, Gas Meters, Industrial Encoders, Industrial Meters, Optical Encoders, Plastic Card Printers, Surveillance Systems, Fuel controls, Gyros, synchros and servos, Cryogenic coolers, Pulmonary assist devices, Clocks, Instrumentation, Drones and model, Fishing reel, etc.

General Selection Factors

Several factors must be cons105ered for choosing miniature ball bearings. These factors include the ring material, design, shields and seals, cage, Annual Bearing Engineering Committee (ABEC) grade, radial play, and lubricant. Miniature bearings are available in open, sealed and shielded configurations. Seals and shields are used in miniature bearings (specifically ball bearings) to retain lubricants and prevent particulate contamination from reaching critical surfaces. Seals are used where minimal light contact is offered. Seals for miniature bearings prov105e deterrence to particulate contamination, but increase torque and limit operating speeds. Shields are used in most applications.