SMF41x Miniature Bearing
Price $ 19.80
Part Number SMF41x
System of Measurement Metric
Bearing Type Ball
For Load Direction Radial
Construction Single Row
Seal Type Open
Bore Dia 1.2 mm
Bore Dia Tolerance -0.008mm to 0
Outer Dia 4 mm
Outer Dia Tolerance -0.008mm to 0
Width 1.8 mm
Width Tolerance -0.12mm to 0
Flange Outer Dia 4.8 mm
Flange Thickness 0.4 mm
Ring Material 440C Stainless Steel
Ball Material 440C Stainless Steel
Cage Material 300 Series Stainless Steel
Dynamic Radial Load 86 N
Static Radial Load 23 N
Max Speed (X1000 rpm) 99
Lubrication Required
Shaft Mount Type Press Fit
Temperature Range -30° to 110 °C
ABEC Rating ABEC1 (Available in ABEC3/5/7)
Radial Clearance Trade No. MC3 (Available in MC1/2/4/5/6)
Radial Clearance 0.002mm to 0.013mm
RoHS Compliant
REACH Compliant
Ball Dia 0.6000 mm
Ball Qty 7
Weight 0.12 g
More Technical Information
SMF41x Miniature Bearing cad drawing

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SMF41x miniature ball bearing has deep groove geometry for high speeds and supporting both radial and axial loads. SMF41x bore dia is 1.2 mm. Its out dia is 4 mm. SMF41x ball material is 440C Stainless Steel. Its seal type is Open. This SMF41x 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 cons956ered 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 prov956e deterrence to particulate contamination, but increase torque and limit operating speeds. Shields are used in most applications.