Shop 800 Series 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

1-3/4" to 3-3/4", Specials available upon request

Click HERE to view the Catalog

Click HERE to view the entire Keyed Coupling Collection



 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
M80011612 800 1-1/2BX3/8K : Magnaloy 800 HUB 1-1/2" BORE X 3/8" KEY 800 Keyed 1.5 (1-1/2") 0.375 (3/8") 1-3 Days $291.99
M80011610S 800 1-1/2BX5/16K : Magnaloy 800 HUB 1-1/2" BORE X 5/16" KEY SPECIAL 800 Keyed 1.5 (1-1/2") 0.3125 (5/16") 1-3 Days $320.99
M80010808S 800 1-1/4BX1/4K : Magnaloy 800 HUB 1-1/4" BORE X 1/4" KEY SPECIAL 800 Keyed 1.25 (1-1/4") 0.25 (1/4") 1-3 Days $320.99
M80010812S 800 1-1/4BX3/8K : Magnaloy 800 HUB 1-1/4" BORE X 3/8" KEY SPECIAL 800 Keyed 1.25 (1-1/4") 0.375 (3/8") 1-3 Days $320.99
M80010810C 800 1-1/4BX5/16K : Magnaloy 800 HUB 1-1/4" BORE X 5/16" KEY W/CLAMP 800 Keyed 1.25 (1-1/4") 0.3125 (5/16") 1-3 Days $330.99
M80010810 800 1-1/4BX5/16K : Magnaloy 800 HUB 1-1/4" BORE X 5/16" KEY 800 Keyed 1.25 (1-1/4") 0.3125 (5/16") 1-3 Days $291.99
M800108N 800 1-1/4BXNOK : Magnaloy 800 HUB 1-1/4" BORE X NO KEY 800 Keyed 1.25 (1-1/4") NONE 1-3 Days $320.99
M80010408S 800 1-1/8BX1/4K : Magnaloy 800 HUB 1-1/8" BORE X 1/4" KEY SPECIAL 800 Keyed 1.125 (1-1/8") 0.25 (1/4") 1-3 Days $320.99
M80013016S 800 1-15/16BX1/2K : Magnaloy 800 HUB 1-15/16" BORE X 1/2" KEY SPECIAL 800 Keyed 1.9375 (1-15/16") 0.5 (1/2") 1-3 Days $320.99
M80012412C 800 1-3/4BX 3/8K : Magnaloy 800 HUB 1-3/4" BORE X 3/8" KEY W/CLAMP 800 Keyed 1.75 (1-3/4") 0.375 (3/8") 1-3 Days $330.99
M80012416S 800 1-3/4BX1/2K : Magnaloy 800 HUB 1-3/4" BORE X 1/2" KEY SPECIAL 800 Keyed 1.75 (1-3/4") 0.5 (1/2") 1-3 Days $320.99
M80012406S 800 1-3/4BX3/16K : Magnaloy 800 HUB 1-3/4" BORE X 3/16" KEY SPECIAL 800 Keyed 1.75 (1-3/4") 0.1875 (3/16") 1-3 Days $320.99
M80012412 800 1-3/4BX3/8K : Magnaloy 800 HUB 1-3/4" BORE X 3/8" KEY 800 Keyed 1.75 (1-3/4") 0.375 (3/8") 1-3 Days $291.99
M80012414C 800 1-3/4BX7/16K : Magnaloy 800 HUB 1-3/4" BORE X 7/16" KEY W/CLAMP 800 Keyed 1.75 (1-3/4") 0.4375 (7/16") 1-3 Days $330.99
M80012414 800 1-3/4BX7/16K : Magnaloy 800 HUB 1-3/4" BORE X 7/16" KEY 800 Keyed 1.75 (1-3/4") 0.4375 (7/16") 1-3 Days $291.99
M80012428S 800 1-3/4BX7/8K : Magnaloy 800 HUB 1-3/4" BORE X 7/8" KEY SPECIAL 800 Keyed 1.75 (1-3/4") 0.875 (7/8") 1-3 Days $351.99
M80011210 800 1-3/8BX5/16K : Magnaloy 800 HUB 1-3/8" BORE X 5/16" KEY 800 Keyed 1.375 (1-3/8") 0.3125 (5/16") 1-3 Days $291.99
M80012012 800 1-5/8BX3/8K : Magnaloy 800 HUB 1-5/8" BORE X 3/8" KEY 800 Keyed 1.625 (1-5/8") 0.375 (3/8") 1-3 Days $291.99
M80012816 800 1-7/8BX1/2K : Magnaloy 800 HUB 1-7/8" BORE X 1/2" KEY 800 Keyed 1.875 (1-7/8") 0.5 (1/2") 1-3 Days $291.99
M80011812S 800 1-9/16BX3/8K : Magnaloy 800 HUB 1-9/16" BORE X 3/8" KEY SPECIAL 800 Keyed 1.5625 (1-9/16") 0.375 (3/8") 1-3 Days $320.99
M800M10028 800 100MMBX28MMK : Magnaloy 800 HUB 100MM BORE X 28MM KEY 800 Keyed 100mm 28mm 1-3 Days $320.99
M80010008S 800 1BX1/4K : Magnaloy 800 HUB 1" BORE X 1/4" KEY SPECIAL 800 Keyed 1" 0.25 (1/4") 1-3 Days $320.99
M80021624SC 800 2-1/2BX3/4K : Magnaloy 800 HUB 2-1/2" BORE X 3/4 KEY SPECIAL W/CLAMP 800 Keyed 2.5 (2-1/2") 0.75 (3/4") 1-3 Days $360.99
M80021624S 800 2-1/2BX3/4K : Magnaloy 800 HUB 2-1/2" BORE X 3/4 KEY SPECIAL 800 Keyed 2.5 (2-1/2") 0.75 (3/4") 1-3 Days $320.99
M80021620C 800 2-1/2BX5/8K : Magnaloy 800 HUB 2-1/2" BORE X 5/8" KEY W/CLAMP 800 Keyed 2.5 (2-1/2") 0.625 (5/8") 1-3 Days $330.99
M80021620 800 2-1/2BX5/8K : Magnaloy 800 HUB 2-1/2" BORE X 5/8" KEY 800 Keyed 2.5 (2-1/2") 0.625 (5/8") 1-3 Days $291.99
M80020816C 800 2-1/4BX1/2K : Magnaloy 800 HUB 2-1/4" BORE X 1/2" KEY W/CLAMP 800 Keyed 2.25 (2-1/4") 0.5 (1/2") 1-3 Days $330.99
M80020816 800 2-1/4BX1/2K : Magnaloy 800 HUB 2-1/4" BORE X 1/2" KEY 800 Keyed 2.25 (2-1/4") 0.5 (1/2") 1-3 Days $291.99
M80020812S 800 2-1/4BX3/8K : Magnaloy 800 HUB 2-1/4" BORE X 3/8" KEY SPECIAL 800 Keyed 2.25 (2-1/4") 0.375 (3/8") 1-3 Days $320.99
M80020820SC 800 2-1/4BX5/8K : Magnaloy 800 HUB 2-1/4" BORE X 5/8" KEY SPECIAL CLAMP 800 Keyed 2.25 (2-1/4") 0.625 (5/8") 1-3 Days $360.99
M80020820S 800 2-1/4BX5/8K : Magnaloy 800 HUB 2-1/4" BORE X 5/8" KEY SPECIAL 800 Keyed 2.25 (2-1/4") 0.625 (5/8") 1-3 Days $320.99
M80020416C 800 2-1/8BX1/2K : Magnaloy 800 HUB 2-1/8" BORE X 1/2" KEY W/CLAMP 800 Keyed 2.125 (2-1/8") 0.5 (1/2") 1-3 Days $330.99
M80020416 800 2-1/8BX1/2K : Magnaloy 800 HUB 2-1/8" BORE X 1/2" KEY 800 Keyed 2.125 (2-1/8") 0.5 (1/2") 1-3 Days $291.99
M80022220S 800 2-11/16BX5/8K : Magnaloy 800 HUB 2-11/16" BORE X 5/8" KEY SPECIAL 800 Keyed 2.6875 (2-11/16") 0.625 (5/8") 1-3 Days $320.99
M80023016S 800 2-15/16BX1/2K : Magnaloy 800 HUB 2-15/16" BORE X 1/2" KEY SPECIAL 800 Keyed 2.9375 (2-15/16") 0.5 (1/2") 1-3 Days $351.99
M80023024SC 800 2-15/16BX3/4K : Magnaloy 800 HUB 2-15/16" BORE X 3/4 KEY SPECIAL W/CLAMP 800 Keyed 2.9375 (2-15/16") 0.75 (3/4") 1-3 Days $360.99
M80023024S 800 2-15/16BX3/4K : Magnaloy 800 HUB 2-15/16" BORE X 3/4" KEY SPECIAL 800 Keyed 2.9375 (2-15/16") 0.75 (3/4") 1-3 Days $320.99
M80023020SC 800 2-15/16BX5/8K : Magnaloy 800 HUB 2-15/16" BORE X 5/8" KEY SPECIAL W/CLAMP 800 Keyed 2.9375 (2-15/16") 0.625 (5/8") 1-3 Days $360.99
M80023020S 800 2-15/16BX5/8K : Magnaloy 800 HUB 2-15/16" BORE X 5/8" KEY SPECIAL 800 Keyed 2.9375 (2-15/16") 0.625 (5/8") 1-3 Days $320.99
M80022424S 800 2-3/4BX3/4K : Magnaloy 800 HUB 2-3/4" BORE X 3/4" KEY SPECIAL 800 Keyed 2.75 (2-3/4") 0.75 (3/4") 1-3 Days $320.99
M80022420C 800 2-3/4BX5/8K : Magnaloy 800 HUB 2-3/4" BORE X 5/8" KEY W/CLAMP 800 Keyed 2.75 (2-3/4") 0.625 (5/8") 1-3 Days $330.99
M80022420 800 2-3/4BX5/8K : Magnaloy 800 HUB 2-3/4" BORE X 5/8" KEY 800 Keyed 2.75 (2-3/4") 0.625 (5/8") 1-3 Days $291.99
M80022428S 800 2-3/4BX7/8K : Magnaloy 800 HUB 2-3/4" BORE X 7/8" KEY SPECIAL 800 Keyed 2.75 (2-3/4") 0.875 (7/8") 1-3 Days $320.99
M80021216S 800 2-3/8BX1/2K : Magnaloy 800 HUB 2-3/8" BORE X 1/2" KEY SPECIAL 800 Keyed 2.375 (2-3/8") 0.5 (1/2") 1-3 Days $320.99
M80021224S 800 2-3/8BX3/4K : Magnaloy 800 HUB 2-3/8" BORE X 3/4 KEY SPECIAL 800 Keyed 2.375 (2-3/8") 0.75 (3/4") 1-3 Days $320.99
M80021220C 800 2-3/8BX5/8K : Magnaloy 800 HUB 2-3/8" BORE X 5/8" KEY W/CLAMP 800 Keyed 2.375 (2-3/8") 0.625 (5/8") 1-3 Days $330.99
M80021220 800 2-3/8BX5/8K : Magnaloy 800 HUB 2-3/8" BORE X 5/8" KEY 800 Keyed 2.375 (2-3/8") 0.625 (5/8") 1-3 Days $291.99
M800212N 800 2-3/8BXNOK : Magnaloy 800 HUB 2-3/8" BORE X NO KEY 800 Keyed 2.375 (2-3/8") NONE 1-3 Days $320.99
M80021020S 800 2-5/16BX5/8K : Magnaloy 800 HUB 2-5/16" BORE X 5/8" KEY SPECIAL 800 Keyed 2.3125 (2-5/16") 0.625 (5/8") 1-3 Days $320.99
M80022020C 800 2-5/8BX5/8 : Magnaloy 800 HUB 2-5/8" BORE X 5/8 W/CLAMP 800 Keyed 2.625 (2-5/8") 0.625 (5/8") 1-3 Days $330.99
Showing all products
1 2 3 Next



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
800H : Magnaloy 870 Insert, 55D, Hytrel, M870H5
$149.00$106.94
Sale Off
800N : Magnaloy 870 Insert, 80A, Neoprene, M870N8
$140.00$107.99
Sale Off
800U : Magnaloy 870 Insert, 90A, Urethane, M870U9
$142.00$109.99
Sale Off
800V : Magnaloy 870 Insert, 80A, Viton, M870V8
$1,116.00$858.99


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.