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

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 Series 100 Keyed Flexible Insert Coupling Halves

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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

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Product SKU Model Coupling Series Coupling Type Bore Size Key Size Lead Time Price
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 Series 300 Keyed Flexible Insert Coupling Halves

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Product SKU Model Coupling Series Coupling Type Bore Size Key Size Lead Time Price
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 Series 400 Keyed Flexible Insert Coupling Halves

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Product SKU Model Coupling Series Coupling Type Bore Size Key Size Lead Time Price
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 Series 500 Keyed Flexible Insert Coupling Halves

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Product SKU Model Coupling Series Coupling Type Bore Size Key Size Lead Time Price
M500M4812 500 48MMBX12MMK : Magnaloy 500 HUB 48MM BORE X 12MM KEY METRIC 500 Keyed 48mm 12mm 1-3 Days $79.99
M500M4814 500 48MMBX14MMK : Magnaloy 500 HUB 48MM BORE X 14MM KEY METRIC 500 Keyed 48mm 14mm 1-3 Days $79.99
M500M4816 500 48MMBX16MMK : Magnaloy 500 HUB 48MM BORE X 16MM KEY 500 Keyed 48mm 16mm 1-3 Days $95.99
M50002004S 500 5/8BX1/8K : Magnaloy 500 HUB 5/8" BORE X 1/8" KEY SPECIAL 500 Keyed 0.625 (5/8") 0.125 (1/8") 1-3 Days $79.99
M50002006S 500 5/8BX3/16K : Magnaloy 500 HUB 5/8" BORE X 3/16" KEY SPECIAL 500 Keyed 0.625 (5/8") 0.1875 (3/16") 1-3 Days $79.99
M50002005S 500 5/8BX5/32K : Magnaloy 500 HUB 5/8" BORE X 5/32" KEY SPECIAL 500 Keyed 0.625 (5/8") 0.15625 (5/32") 1-3 Days $79.99
M500020N 500 5/8BXNOK : Magnaloy 500 HUB 5/8" BORE X NO KEY 500 Keyed 0.625 (5/8") NONE 1-3 Days $79.99
M500M5012 500 50MMBX12MMK : Magnaloy 500 HUB 50MM BORE X 12MM KEY 500 Keyed 50mm 12mm 1-3 Days $79.99
M500M5014 500 50MMBX14MMK : Magnaloy 500 HUB 50MM BORE X 14MM KEY METRIC 500 Keyed 50mm 14mm 1-3 Days $79.99
M500M5016 500 50MMBX16MMK : Magnaloy 500 HUB 50MM X 16MM KEY METRIC 500 Keyed 50mm 16mm 1-3 Days $79.99
M500M5018 500 50MMBX18MMK : Magnaloy 500 HUB 50MM BORE X 18MM KEY 500 Keyed 50mm 18mm 1-3 Days $79.99
M500M5216 500 52MMBX16MMK : Magnaloy 500 HUB 52MM BORE X 16MM KEY 500 Keyed 52mm 16mm 1-3 Days $79.99
M500M5308S 500 53MMBX1/4K : Magnaloy 500 HUB 53MM BORE X 1/4" KEY SPECIAL 500 Keyed 53mm 0.25 (1/4") 1-3 Days $95.99
M500M5412 500 54MMBX12MMK : Magnaloy 500 HUB 54MM BORE X 12MM KEY 500 Keyed 54mm 12mm 1-3 Days $79.99
M500M5413 500 54MMBX13MMK : Magnaloy 500 HUB 54MM BORE X 13MM KEY 500 Keyed 54mm 13mm 1-3 Days $95.99
M500M5510 500 55MMBX10MMK : Magnaloy 500 HUB 55MM BORE X 10MM KEY METRIC 500 Keyed 55mm 10mm 1-3 Days $79.99
M500M5512 500 55MMBX12MMK : Magnaloy 500 HUB 55MM BORE X 12MM KEY 500 Keyed 55mm 12mm 1-3 Days $79.99
M500M5515 500 55MMBX15MMK : Magnaloy 500 HUB 55MM BORE X 15MM KEY METRIC 500 Keyed 55mm 15mm 1-3 Days $79.99
M500M5516 500 55MMBX16MMK : Magnaloy 500 HUB 55MM BORE X 16MM KEY METRIC 500 Keyed 55mm 16mm 1-3 Days $79.99
M500M5516C 500 55MMBX16MMK : Magnaloy 500 HUB 55MM BORE X 16MM KEY W/CLAMP 500 Keyed 55mm 16mm 1-3 Days $112.99
M500M5816 500 58MMBX16MMK : Magnaloy 500 HUB 58MM BORE X 16MM KEY 500 Keyed 58mm 16mm 1-3 Days $95.99
M500M6016 500 60MMBX16MMK : Magnaloy 500 HUB 60MM BORE X 16MM KEY METRIC 500 Keyed 60mm 16mm 1-3 Days $79.99
M500M6017 500 60MMBX17MMK : Magnaloy 500 HUB 60MM BORE X 17MM KEY 500 Keyed 60mm 17mm 1-3 Days $79.99
M500M6018 500 60MMBX18MMK : Magnaloy 500 HUB 60MM BORE X 18MM KEY 500 Keyed 60mm 18mm 1-3 Days $79.99
M50002808 500 7/8BX1/4K : Magnaloy 500 HUB 7/8" BORE X 1/4" KEY 500 Keyed 0.875 (7/8") 0.25 (1/4") Same Day $62.99
M50002806C 500 7/8BX3/16K : Magnaloy 500 HUB 7/8" BORE X 3/16" KEY W/CLAMP 500 Keyed 0.875 (7/8") 0.1875 (3/16") 1-3 Days $96.99
M50002806 500 7/8BX3/16K : Magnaloy 500 HUB 7/8" BORE X 3/16" KEY 500 Keyed 0.875 (7/8") 0.1875 (3/16") Same Day $62.99
M50002810S 500 7/8BX5/16K : Magnaloy 500 HUB 7/8" BORE X 5/16" KEY SPECIAL 500 Keyed 0.875 (7/8") 0.3125 (5/16") 1-3 Days $95.99
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
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

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Product SKU Model Coupling Series Coupling Type Bore Size Key Size Lead Time Price
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 Series 700 Keyed Flexible Insert Coupling Halves

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Product SKU Model Coupling Series Coupling Type Bore Size Key Size Lead Time Price
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 Series 800 Keyed Flexible Insert Coupling Halves

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Product SKU Model Coupling Series Coupling Type Bore Size Key Size Lead Time Price
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 Series 900 Keyed Flexible Insert Coupling Halves

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

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Standard Style

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Double Set Screw Style

Ideal for improved shaft 

retention of keyed shafts. 

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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
$14.00$10.99
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200H : Magnaloy 270 Insert, 55D, Hytrel, M270H5
$16.00$12.99
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300H : Magnaloy 370 Insert, 55D, Hytrel, M370H5
$20.00$15.99
Sale Off
400H : Magnaloy 470 Insert, 55D, Hytrel, M470H5
$28.00$21.99
Sale Off
500H : Magnaloy 570 Insert, 55-D, Hytrel, M570H5
$37.00$27.83
Sale Off
600H : Magnaloy 670 Insert, 55D, Hytrel, M670H5
$63.00$48.99
Sale Off
700H : Magnaloy 770 Insert, 55D, Hytrel, M770H5
$91.00$70.99
Sale Off
800H : Magnaloy 870 Insert, 55D, Hytrel, M870H5
$149.00$106.94


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.