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Measurement and Control Systems
    The torsional stiffness of the GS Series coupling provides zero backlashes needed for the accuracy for measurement and control systems. The low torques of these applications give the GS Series the ability to provide zero backlashes due to the elastomeric pre-stress.
Servo and Positioning Drives
    The GS Series provides a zero backlash, flexible connection for servo and positioning drives. An added benefit of the GS Series is its damping capabilities.
    For applications that have vibrations at critical speeds, the GS Series coupling can provide a zero backlash solution for vibration problems.
Main Spindle Drives
    The GS Series coupling is used in main spindle drives for machine tools. Torque spikes and cyclical loading are handled by the GS Series by damping or by shifting the vibratory frequency range to a non-critical speed range.
The GS Series can be used in a variety of different applications requiring precision and accuracy.

The GS Series spider features a straight center of the spider tooth, providing higher stiffness due to coupling prestress. The crowning of the ends of the spider legs allows for misalignment, while the curved jaws and solid spider center provide high-speed capability.The jaws of the hubs and the spider legs are chamfered to provide easy assembly. The GS Series coupling design also allows the blind assembly in tight spaces. Raised spider dots on the legs of the spider ensure proper spacing of hubs and spider.

Proper installation of the coupling can provide isolation of electrical currents. Check the CL dimension listed on this page to ensure the proper spacing between spiders and hubs.

The GS Series coupling has spiders available in four different shore hardnesses. Each spider offers benefits for different vibratory, environmental, and torque transmission requirements.
Unit of Measure
Items
Curved Jaw Coupling Spiders, GS Series - Metric

Curved Jaw Clamping Hub w/ Double Slot w/o Keyway

Curved Jaw Coupling Spiders, GS Series - Metric

Curved Jaw Clamping Hub w/ Double Slot w/o Keyway

Curved Jaw Coupling Spiders, GS Series - Metric

Curved Jaw Clamping Hub w/ Single Slot w/ Keyway (CWK)

Curved Jaw Coupling Spiders, GS Series - Metric

Curved Jaw Clamping Hub w/ Single Slot w/ Keyway (CWK)

Curved Jaw Coupling Spiders, GS Series - Metric

Curved Jaw Clamping Hub w/ Single Slot w/ Keyway (CWK)
Description  N/A GS38/45B-HUB-AL-1-3/4-DSC N/A GS38/45B-HUB-AL-1-1/2-DSC N/A GS19/24B-HUB-AL-7/8-CWK N/A GS19/24B-HUB-AL-5/8-CWK N/A GS19/24B-HUB-AL-1/2-CWK
Bore Size  N/A 1 3/4 in N/A 1 1/2 in N/A 7/8 in N/A 5/8 in N/A 1/2 in
Hub Style N/A B
Type N/A Curved Jaw Coupling Hubs
Spider Size N/A 38/45 N/A 38/45 N/A 19/24 N/A 19/24 N/A 19/24
Hub Material N/A Aluminum
Set Screw Style Coupling Size (Dimension T) N/A M8 N/A M8 N/A M6 N/A M6 N/A M6
Set Screw Style Coupling Location Size (Dimension SL) N/A
Keyway Size (W x D) N/A
Length thru Bore N/A 1.770 in44.96 mm N/A 1.770 in44.96 mm N/A 0.980 in24.89 mm N/A 0.980 in24.89 mm N/A 0.980 in24.89 mm
Style N/A Bored
Outside Diameter N/A 3.150 in80.00 mm N/A 3.150 in80.00 mm N/A 1.57 in39.88 mm N/A 1.57 in39.88 mm N/A 1.57 in39.88 mm
Overall Coupling Length N/A 4.490 in114.05 mm N/A 4.490 in114.05 mm N/A 2.6 in66.04 mm N/A 2.6 in66.04 mm N/A 2.6 in66.04 mm
Color N/A Silver
Normal Temperature Range (with 92 Shore A spider) N/A -40 to 194 ºF
Max Temp (with 92 Shore A spider) N/A -50 to 248 ºF
Nominal Torque (with 92 Shore A spider) N/A 1680 in·lb N/A 1680 in·lb N/A 88.00 in·lb N/A 88.00 in·lb N/A 88.00 in·lb
Max Torque (with 92 Shore A spider) N/A 3360 in·lb N/A 3360 in·lb N/A 177.00 in·lb N/A 177.00 in·lb N/A 177.00 in·lb
Clamping Bolt Style Coupling Torque N/A 221.25 in·lb N/A 221.25 in·lb N/A 92.93 in·lb N/A 92.93 in·lb N/A 92.93 in·lb
Bore Type N/A Solid
Max. Bore (Dimensions ID1/ID2) N/A 1.75 in44 mm N/A 1.75 in44 mm N/A .938 in23.8 mm N/A .938 in23.8 mm N/A .938 in23.8 mm
Max. Speed N/A 4750 rpm N/A 4750 rpm N/A 9550 rpm N/A 9550 rpm N/A 9550 rpm
Dimension CL N/A 0.120 in3.05 mm N/A 0.120 in3.05 mm N/A .08 in2.03 mm N/A .08 in2.03 mm N/A .08 in2.03 mm
Dimension G N/A 0.940 in23.88 mm N/A 0.940 in23.88 mm N/A 0.630 in16.00 mm N/A 0.630 in16.00 mm N/A 0.630 in16.00 mm
Dimension HD N/A 3.15 in80.01 mm N/A 3.15 in80.01 mm N/A 1.57 in39.88 mm N/A 1.57 in39.88 mm N/A 1.57 in39.88 mm
Clamping Bolt Style Coupling Bolt Location Size (Dimension SL1) N/A 0.790 in N/A 0.790 in N/A 0.470 in N/A 0.470 in N/A 0.470 in
Dimension TH N/A 0.160 in4.06 mm N/A 0.160 in4.06 mm N/A .12 in3.05 mm N/A .12 in3.05 mm N/A .12 in3.05 mm
Clamping Bolt Style Coupling Bolt Size N/A M8 N/A M8 N/A M6 N/A M6 N/A M6
Coupling Type N/A Jaw
Weight N/A 1.3 lb N/A 1.3 lb N/A 0.15 lb N/A 0.15 lb N/A 0.15 lb
Cubic inches N/A 17.56283 in³ N/A 17.56283 in³ N/A 1.36455 in³ N/A 1.36455 in³ N/A 1.36455 in³