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    One Diaphragm Coupling, 8mm to 20mm

    Sell couplings from 8 mm to 20 mm at a cheap price, one diaphragm, diameter 44mm, length 34.5mm, high torque rigidity and precise control, internal clamping design of the coupling is easy to install and use.
    SKU: ATO-SC-GSM44345
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    One diaphragm bore 8mm to 16mm, size 44 x 34.5mm, internal clamping screw tightening, shaft sleeve made of high-strength aluminum alloy, ratd torque 12N.m, speed of 10000rpm, designed for connecting servo motors and stepping motors.


    Model ATO-SC-GSM44345
    Length 34.5mm
    Width 44mm
    Bore 8mm to 20mm
    Rated Torque 12 N.m
    Allow Eccentricity 0.1mm
    Allowable Deflection Angle 1∠°
    Allowable Axial Deviation ±0.27
    Allowable Speed 10000 RPM
    Static Torsional Stiffness 18000N.m/rad
    Moment of Inertia 2.8 x 10-5
    Weight 100g
    Certificate ISO9001, REACH, RoHS
    Warranty 12 Months

    Single Diaphragm Flexible Coupling Dimension (unit: mm)

    Diaphragm coupling dimension

    d1/d2 Inner Diameter Size Φd L LF S F M Tightening Torque
    8-9-9.525-10-11-12-12.7-14-15-16-17-18-19-20 44 34.5 14.9 4.5 5 M4 3.5 N.m


    Diaphragm coupling detail


    Shaft Diameter Keyway Standard Machining Dimensions Keyway Size
    d1/d2 b t (bXh)
    Width of groove Tolerance Depth of groove Tolerance
    φ6~φ7.9 2 ±0.0125 1 ±0.10 2x2
    φ8~φ10 3 1.4 3x3
    φ10.1~φ12 4 ±0.0150 1.8 4x4
    φ12.1~φ17 5 2.3 5x5
    φ17.1~φ22 6 2.8 6x6
    φ22.1~φ30 8 ±0.0180 3.3 ±0.20 8x7
    φ30.1~φ38 10 3.3 10x8
    φ38.1~φ44 12 ±0.0215 3.3 12x8
    φ44.1~φ50 14 3.8 14x9
    φ50.1~Ф58 16 4.3 16x10
    φ58.1~φ65 18 4.4 18x11

    Keyway Machining Standard Drawing

    Diaphragm coupling keyway dimension

    Tips: Precautions for installing the diaphragm coupling

    1. Before installation, clean the end faces of the two shafts and check the fit of the key grooves on the end faces.
    2. Please install a protective cover and other devices around the diaphragm coupling to ensure safety.
    3. The allowable axis deviation of the coupling includes radial, angular and axial deviation. When installing, please make adjustments to ensure that the axis deviation is within the allowable range of the corresponding product catalog.
    4. When multiple deviations appear at the same time, the corresponding allowable value should be halved.
    5. In order to prolong the service life of the diaphragm coupling, it is recommended to set the axis deviation within 1/3 of the allowable value.
    6. Tighten the screws after inserting the mounting shaft, otherwise the coupling will be deformed. When tightening the screws, please use a torque wrench, do not use screws other than accessories for installation.
    7. If there is an abnormal sound during operation, please stop the operation immediately and check the installation accuracy and screw loosening.
    8. It is recommended to apply adhesive on the outer surface of the screw after installation and debugging to increase the protective performance of the diaphragm coupling.

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