Shop Keyed Couplings

Couplings are used to "couple" a pump and motor or engine together. One coupling half slips over the shaft of your engine or motor, one coupling half 

slips over the shaft of your pump, and the flexible insert goes in between to mate the two halves together. The higher the series of your coupling, the more robust the coupling. The close machining tolerances of these couplings assures vibration-free operation and easy, accurate alignment without need for special tools.

Magnaloy Coupling Hub part numbers may be specified using the following format: Start with letter “M” designating Magnaloy, followed by 3 digit 

Model Code (100, 200, etc.), then the specific 5 digit Bore/Key Code. All standard combinations of each series are shown below. 

Coupling Type:

Material:

Bore Sizes:

View the Catalog:

View the Collection:

Keyed

Lightweight Magnesium

3/8" to 4.75", Specials available upon request

Click HERE to view the Catalog

Click HERE to view the entire Keyed Coupling Collection



 Series 100 Keyed Flexible Insert Coupling Halves

Click on the model number in the chart below to view that item. 


Product SKU Model Coupling Series Coupling Type Bore Size Key Size Lead Time Price
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 Series 200 Keyed Flexible Insert Coupling Halves

Click on the model number in the chart below to view that item. 


Product SKU Model Coupling Series Coupling Type Bore Size Key Size Lead Time Price
Previous 13



 Series 300 Keyed Flexible Insert Coupling Halves

Click on the model number in the chart below to view that item. 


Product SKU Model Coupling Series Coupling Type Bore Size Key Size Lead Time Price
Previous 15



 Series 400 Keyed Flexible Insert Coupling Halves

Click on the model number in the chart below to view that item. 


Product SKU Model Coupling Series Coupling Type Bore Size Key Size Lead Time Price
Previous 15



 Series 500 Keyed Flexible Insert Coupling Halves

Click on the model number in the chart below to view that item. 


Product SKU Model Coupling Series Coupling Type Bore Size Key Size Lead Time Price
M500028N 500 7/8BXNOK : Magnaloy 500 HUB 7/8" BORE X NO KEY 500 Keyed 0.875 (7/8") NONE 1-3 Days $79.99
M50002806SDSS 500 876/877BX3/16K : Magnaloy 500 HUB .876/.877" BORE X 3/16" KEY W/DBL SET SCREW 500 Keyed 0.876/.877" 0.1875 (3/16") 7-10 Days $82.99
M50001804S 500 9/16BX1/8K : Magnaloy 500 HUB 9/16" BORE X 1/8" KEY SPECIAL 500 Keyed 0.5625 (9/16") 0.125 (1/8") 1-3 Days $79.99
M500R 500 NO BORE : Magnaloy 500 HUB NO BORE 500 Keyed NONE NONE 1-3 Days $57.99
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 Series 600 Keyed Flexible Insert Coupling Halves

Click on the model number in the chart below to view that item. 


Product SKU Model Coupling Series Coupling Type Bore Size Key Size Lead Time Price
Previous 15



 Series 700 Keyed Flexible Insert Coupling Halves

Click on the model number in the chart below to view that item. 


Product SKU Model Coupling Series Coupling Type Bore Size Key Size Lead Time Price
Previous 14



 Series 800 Keyed Flexible Insert Coupling Halves

Click on the model number in the chart below to view that item. 


Product SKU Model Coupling Series Coupling Type Bore Size Key Size Lead Time Price
Previous 15



 Series 900 Keyed Flexible Insert Coupling Halves

Click on the model number in the chart below to view that item. 


Product SKU Model Coupling Series Coupling Type Bore Size Key Size Lead Time Price





Coupling Options

Double Set Screws or Clamp options are ideal for improved shaft retention. Just add a 'DSS' or 'C' at the end of the part numbers above to add those options.

Standard Style

Double Set Screw Style

Ideal for improved shaft 

retention of keyed shafts. 

Clamp Style

Ideal for improved shaft 

retention of splined shafts. 





Spare Parts

Our full range of flexible inserts permit custom design performance for a wide range of applications. All insert materials offer complete electrical insulation, as our factory design eliminates all metal-to-metal contact. Which Coupling Insert you select will vary based on the application, but the series of your Coupling Insert must match the series of the Coupling Halves. For example, a 200 Series Coupling must use a 200 Series Coupling Insert.

Sale Off
100H : Magnaloy 170 Insert, 55D, Hytrel, M170H5
$12.00$10.99
Sale Off
200H : Magnaloy 270 Insert, 55D, Hytrel, M270H5
$14.00$12.99
Sale Off
300H : Magnaloy 370 Insert, 55D, Hytrel, M370H5
$18.00$15.99
Sale Off
400H : Magnaloy 470 Insert, 55D, Hytrel, M470H5
$25.00$21.99
Sale Off
500H : Magnaloy 570 Insert, 55-D, Hytrel, M570H5
$33.00$28.99
Sale Off
600H : Magnaloy 670 Insert, 55D, Hytrel, M670H5
$57.00$48.99
Sale Off
700H : Magnaloy 770 Insert, 55D, Hytrel, M770H5
$82.00$70.99
Sale Off
800H : Magnaloy 870 Insert, 55D, Hytrel, M870H5
$135.00$114.99


Don't see what you need? Give us a call! Special combinations may be available upon request. 
Want to view all keyed coupling options? Click HERE for our full collection.