(0) Shopping cart
You have no items in your shopping cart.
Shopping Categories

    One Diaphragm Coupling, 4mm to 8mm

    5 out of 5 based on 1 reviews | Write a review
    One diaphragm coupling diameter 19mm, length 20mm, 4mm to 8mm, shaft sleeve material high-strength aluminum alloy, high torque, speed 10000rpm, used in occasions with frequent load starting or working load changes.
    SKU: ATO-SC-GSM1920
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    Shaft coupling for connecting servo motors and stepping motors, single diaphragm, bore 4mm to 8mm, diameter 19mm x length 20mm, light weight, easy to install.


    Model ATO-SC-GSM1920
    Length 20mm
    Width 19mm
    Bore 4mm to 8mm
    Rated Torque 1 N.m
    Allow Eccentricity 0.1mm
    Allowable Deflection Angle 1∠°
    Allowable Axial Deviation ±0.09
    Allowable Speed 10000 RPM
    Static Torsional Stiffness 1400N.m/rad
    Moment of Inertia 6.7 x 10-7
    Weight 12g
    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
    3-4-5-6-6.35-7-8 19 20 9.1 1.8 3.3 M2.5 1 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: Flexible Shaft Coupling Features

    1. Zero clearance: The entire coupling is not allowed to have clearance during transmission.
    2. Low inertia: On the basis of ensuring the transmission strength, the weight of the coupling should be reduced as much as possible. Good flexibility:
    3. The precision coupling needs to absorb the deviation between the shaft and the shaft produced during the installation process to a large extent.
    4. Compact structure: The shaft coupling is usually small in size, and its clockwise and counterclockwise rotation characteristics are exactly the same.
    5. Maintenance-free: After the shaft coupling is installed, there is basically no need for maintenance, and the installation is extremely convenient. 
    Existing reviews of One Diaphragm Coupling, 4mm to 8mm
    Works great for my application
    Recently a new laser cutting machine was installed in the office, I tried to buy several types of couplings, which I have used and done well, the price is acceptable to me, the processing is perfect, the appearance is exquisite and beautiful.
    From: Rio | Date: 13/04/2022
    Was this review helpful? Yes No (0/0)
    Load more reviews...
    Write your review for One Diaphragm Coupling, 4mm to 8mm
    • Only registered users can write reviews
    • Bad
    • Excellent