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Product Attributes
Part NumberSF681
System of MeasurementMetric
Bearing TypeBall
For Load DirectionRadial
ConstructionSingle Row
Inner Ring TypeStandard
Seal TypeOpen
Bore Dia1 mm
Bore Dia Tolerance-0.008mm to 0
Outer Dia3 mm
Outer Dia Tolerance-0.008mm to 0
Width1 mm
Width Tolerance-0.12mm to 0
Flange Outer Dia3.8 mm
Flange Thickness0.3 mm
Ring Material440C Stainless Steel
Ball Material440C Stainless Steel
Cage Material300 Series Stainless Steel
Dynamic Radial Load16.65 lbf
Static Radial Load4.275 lbf
Max Speed (X1000 rpm)117
LubricationRequired
Shaft Mount TypePress Fit
Temperature Range-30° to 110 °C
ABEC RatingABEC1 (Available in ABEC3/5/7)
Radial Clearance Trade No.MC3 (Available in MC1/2/4/5/6)
Radial Clearance0.002mm to 0.013mm
RoHSCompliant
REACHCompliant
Ball Dia0.6000 mm
Ball Qty6
Weight0.04 g
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SF681 Metric Size Miniature Flanged Ball Bearings have deep groove geometry for high speeds and supporting both radial and axial loads. These SF681 Metric Size Miniature Flanged Ball Bearings are for use in applications that involve combined radial and axial loads and a need for high running accuracy at high rotational speeds. For instance, SF681 is often used in motors, ATMs as well as Card Readers. In Food...

SF681 Metric Size Miniature Flanged Ball Bearings have deep groove geometry for high speeds and supporting both radial and axial loads. These SF681 Metric Size Miniature Flanged Ball Bearings are for use in applications that involve combined radial and axial loads and a need for high running accuracy at high rotational speeds. For instance, SF681 is often used in motors, ATMs as well as Card Readers. In Food & Beverage Industry,SF681 is also popular. applications about SF681 are as follows.

Typical applications include:

Miniature flange ball bearings are suitable for aircraft model drones, micro motors, gimbal motors, dental drills, crushers, stepper motors, massage chairs, push rod motors, computers, wall breaking machines, sports equipment, fitness equipment, robots, Mechanical equipment, household appliances, medical equipment, precision instruments and other industries.

General Selection Factors

Several factors must be considered 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 provide deterrence to particulate contamination, but increase torque and limit operating speeds. Shields are used in most applications.

Aubearing is an ISO certified Chinese bearing manufacturer and supplier. Competitive prices, 1,200,000+ SKU inventory, including internationally renowned brands such as SKF, Timken, Schaeffler (FAG, INA), NSK, KOYO, NTN, McGill, etc. Aubearing has invested in 300+ equipment, heat treatment facilities, lathes, grinders, milling machines, bearing production lines, CMMs, metallographic testers, etc. Leading Time<7 Days, MOQ=1.

Various types of ball bearings and roller bearings, size range: 1mm-2000mm. Including thin section bearings (KAYDON equivalents and 67, 68, 69 series), ceramic bearings, stainless steel bearings, deep groove ball bearings, angular contact bearings, thrust ball bearings, spherical roller bearings, cylindrical roller bearings, needle roller bearings, tapered roller bearings, precision crossed roller bearings, bushings (sleeve bearings), linear bearings, automotive wheel hub bearings and corresponding inch series.

Customization options: material (Gcr15, silicon nitride, silicon carbide, zirconium oxide, aluminum oxide, stainless steel 304, 316, 420, 440, PTFE\PEEK\nylon and other plastics), cage (brass, stamping steel, retainer), lubrication (lubricating oil, grease, high temperature resistance), clearance (C2\CN\C3\C4\C5), seal (nitrile rubber, silicone rubber, fluororubber, polypropylene rubber), shielding, etc.