Ringfeder

Shrink Disc RfN 4091-125 - Heavy Duty Series/split

RfN 4091-125 RfN 4091-50 Shrink disc is the modern method for creating a mechanical shrink fit. RINGFEDER® Shrink Disc connections are suitable for securing all types of hubs onto shafts and axles.

• Light design – suitable for medium transmissible values when space is limited.

• Slitted inner ring – low forces and pressures on hub and shaft. Maximum reliability – suitable for static, dynamic and impact loads.

• Easy mounting – no steps, keyways, splines are required, therefore hubs can be located and locked at any point or angle on the shaft. RINGFEDER® Shrink Discs use standard screws tightened with standard tools. No additional machining or fitting work is required.

• Easy replacement – the RINGFEDER® Shrink Disc is free from any form fit.

• Easy removal – after loosening the locking screws, the RINGFEDER® Shrink Disc will self release and the hub will move freely on the shaft.

• Simplified manufacture – only plain shaft and bore diameters with easily achieved surface finish and tolerances are required.

• Low susceptibility to contamination – when the locking screws are tightened the functional contact surfaces are pressed firmly together and prevent the ingress of dirt and moisture.

MPN: RfN 4091-125

Quantity

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Specifications


base size 2.5"
d x d inch 4.921 x 8.465
solid shaft diameter 3.543
pitch circle diameter 6.299
overall length 2.874
overall length without screws 2.559
thrust ring width 1.102
width of ring 2.165
width of the half shrink disc 1.476
max. tightened torque of the screws ft lbs 75
transmissible torque at given ta ft lbs 12.907
transmissible axial force 87.291
hub surface pressure psi 35.996
equivalent stress in the hub 48.043
max. transmissible torque ft lbs 16.134

Related Literature & Videos


ringfeder_shrink-discs_us.pdf

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