Shop 300 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:
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 |
|---|---|---|---|---|---|---|---|
| M30003006S | 300 15/16BX3/16K : Magnaloy 300 HUB 15/16" BORE X 3/16" KEY SPECIAL | 300 | Keyed | 0.9375 (15/16") | 0.1875 (3/16") | 1-3 Days | $42.99 |
| M30003010S | 300 15/16BX5/16K : Magnaloy 300 HUB 15/16" BORE X 5/16" KEY SPECIAL | 300 | Keyed | 0.9375 (15/16") | 0.3125 (5/16") | 1-3 Days | $42.99 |
| M300030N | 300 15/16BXNOK : Magnaloy 300 HUB 15/16" BORE X NO KEY | 300 | Keyed | 0.9375 (15/16") | NONE | 1-3 Days | $42.99 |
| M300M1505 | 300 15MMBX5MMK : Magnaloy 300 HUB 15MM BORE X 5MM KEY | 300 | Keyed | 15mm | 5mm | 1-3 Days | $42.99 |
| M3001.675N | 300 1675 X NOK : Magnaloy 300 HUB 1.675 X NO KEY SPECIAL | 300 | Keyed | 1.675" | NONE | 1-3 Days | $42.99 |
| M300M1605 | 300 16MMBX5MMK : Magnaloy 300 HUB 16MM BORE X 5MM KEY METRIC | 300 | Keyed | 16mm | 5mm | 1-3 Days | $42.99 |
| M300M1605DSS45 | 300 16MMBX5MMK : Magnaloy 300 HUB 16MM BORE X 5MM KEY W/DBL SET SCREW AT 45DEG | 300 | Keyed | 16mm | 5mm | 7-10 Days | $45.99 |
| M300M1605C | 300 16MMBX5MMK : Magnaloy 300 HUB 16MM BORE X 5MM KEY W/CLAMP | 300 | Keyed | 16mm | 5mm | 1-3 Days | $73.99 |
| M300M16N | 300 16MMBXNOK : Magnaloy 300 HUB 16MM BORE X NO KEY | 300 | Keyed | 16mm | NONE | 1-3 Days | $42.99 |
| M30001704S | 300 17/32BX1/8K : Magnaloy 300 HUB 17/32" BORE X 1/8" KEY SPECIAL | 300 | Keyed | 0.53125 (17/32") | 0.125 (1/8") | 1-3 Days | $42.99 |
| M300M1705DSS45 | 300 17MMBX5MMK : Magnaloy 300 HUB 17MM BORE X 5MM KEY METRIC W/DBL SET SCREW AT 45DEG | 300 | Keyed | 17mm | 5mm | 7-10 Days | $45.99 |
| M300M1705C | 300 17MMBX5MMK : Magnaloy 300 HUB 17MM BORE X 5MM KEY W/CLAMP | 300 | Keyed | 17mm | 5mm | 1-3 Days | $73.99 |
| M300M1705 | 300 17MMBX5MMK : Magnaloy 300 HUB 17MM BORE X 5MM KEY METRIC | 300 | Keyed | 17mm | 5mm | 1-3 Days | $42.99 |
| M300M1806 | 300 18MMBX6MMK : Magnaloy 300 HUB 18MM BORE X 6MM KEY METRIC | 300 | Keyed | 18mm | 6mm | 1-3 Days | $42.99 |
| M300M1806DSS | 300 18MMBX6MMK : Magnaloy 300 HUB 18MM BORE X 6MM KEY W/DBL SET SCREW | 300 | Keyed | 18mm | 6mm | 7-10 Days | $45.99 |
| M300M1905 | 300 19MMBX5MMK : Magnaloy 300 HUB 19MM BORE X 5MM KEY METRIC | 300 | Keyed | 19mm | 5mm | 1-3 Days | $42.99 |
| M300M1906 | 300 19MMBX6MMK : Magnaloy 300 HUB 19MM BORE X 6MM KEY METRIC | 300 | Keyed | 19mm | 6mm | 1-3 Days | $42.99 |
| M30010008DSS | 300 1BX1/4 : Magnaloy 300 HUB 1" BORE X 1/4" DBL SET SCREW | 300 | Keyed | 1" | 0.25 (1/4") | 7-10 Days | $33.99 |
| M30010008DSS45 | 300 1BX1/4K : Magnaloy 300 HUB 1" BORE X 1/4" KEY DBL SET SCREW AT 45DEG | 300 | Keyed | 1" | 0.25 (1/4") | 7-10 Days | $33.99 |
| M30010008S | 300 1BX1/4K : Magnaloy 300 HUB 1" BORE X 1/4" KEY SPECIAL C=2.25MM BORE X .38 | 300 | Keyed | 1" | 0.25 (1/4") | 1-3 Days | $92.99 |
| M30010008C | 300 1BX1/4K : Magnaloy 300 HUB 1" BORE X 1/4" KEY W/CLAMP | 300 | Keyed | 1" | 0.25 (1/4") | 1-3 Days | $63.99 |
| M30010008 | 300 1BX1/4K : Magnaloy 300 HUB 1" BORE X 1/4" KEY | 300 | Keyed | 1" | 0.25 (1/4") | 1-3 Days | $31.99 |
| M30010006DSS | 300 1BX3/16 : Magnaloy 300 HUB 1" BORE X 3/16" W/DBL SET SCREW | 300 | Keyed | 1" | 0.1875 (3/16") | 7-10 Days | $33.99 |
| M30010006 | 300 1BX3/16 : Magnaloy 300 HUB 1" BORE X 3/16 | 300 | Keyed | 1" | 0.1875 (3/16") | 1-3 Days | $31.99 |
| M30010006DSS45 | 300 1BX3/16K : Magnaloy 300 HUB 1" BORE X 3/16" KEY W/DBL SET SCREW AT 45DEG | 300 | Keyed | 1" | 0.1875 (3/16") | 7-10 Days | $33.99 |
| M30010012S | 300 1BX3/8K : Magnaloy 300 HUB 1" BORE X 3/8" KEY SPECIAL | 300 | Keyed | 1" | 0.375 (3/8") | 1-3 Days | $42.99 |
| M30010010S | 300 1BX5/16K : Magnaloy 300 HUB 1" BORE X 5/16" KEY SPECIAL | 300 | Keyed | 1" | 0.3125 (5/16") | 1-3 Days | $42.99 |
| M30010009S | 300 1BX9/32 : Magnaloy 300 HUB 1" BORE X 9/32 SPECIAL | 300 | Keyed | 1" | 0.28125 (9/32") | 1-3 Days | $53.99 |
| M300100N | 300 1BXNOK : Magnaloy 300 HUB 1" BORE X NO KEY | 300 | Keyed | 1" | NONE | 1-3 Days | $42.99 |
| M300M2005 | 300 20MMBX5MMK : Magnaloy 300 HUB 20MM BORE X 5MM KEY METRIC | 300 | Keyed | 20mm | 5mm | 1-3 Days | $42.99 |
| M300M2006 | 300 20MMBX6MMK : Magnaloy 300 HUB 20MM BORE X 6MM KEY METRIC | 300 | Keyed | 20mm | 6mm | 1-3 Days | $42.99 |
| M300M2006DSS | 300 20MMBX6MMK : Magnaloy 300 HUB 20MM BORE X 6MM KEY W/DBL SET SCREW | 300 | Keyed | 20mm | 6mm | 7-10 Days | $45.99 |
| M300M2006DSS45 | 300 20MMBX6MMK : Magnaloy 300 HUB 20MM BORE X 6MM KEY DBL SET SCREW.AT 45DEG | 300 | Keyed | 20mm | 6mm | 7-10 Days | $45.99 |
| M300M2008 | 300 20MMBX8MMK : Magnaloy 300 HUB 20MM BORE X 8MM KEY | 300 | Keyed | 20mm | 8mm | 1-3 Days | $42.99 |
| M300M2107 | 300 21MMBX7MMK : Magnaloy 300 HUB 21MM BORE X 7MM KEY | 300 | Keyed | 21mm | 7mm | 1-3 Days | $42.99 |
| M300M2208S | 300 22MMBX1/4K : Magnaloy 300 HUB 22MM BORE X 1/4" KEY SPECIAL | 300 | Keyed | 22mm | 0.25 (1/4") | 1-3 Days | $53.99 |
| M300M2206 | 300 22MMBX6MMK : Magnaloy 300 HUB 22MM BORE X 6MM KEY METRIC | 300 | Keyed | 22mm | 6mm | 1-3 Days | $42.99 |
| M300M2206C | 300 22MMBX6MMK : Magnaloy 300 HUB 22MM BORE X 6MM KEY W/CLAMP | 300 | Keyed | 22mm | 6mm | 1-3 Days | $73.99 |
| M300M2207S | 300 22MMBX7MMK : Magnaloy 300 HUB 22MM BORE X 7MM KEY SPECIAL | 300 | Keyed | 22mm | 7mm | 1-3 Days | $53.99 |
| M300M2308S | 300 23MMBX1/4K : Magnaloy 300 HUB 23MM BORE X 1/4" KEY SPECIAL | 300 | Keyed | 23mm | 0.25 (1/4") | 1-3 Days | $53.99 |
| M300M2308 | 300 23MMBX8 MMK : Magnaloy 300 HUB 23MM BORE X 8 MM KEY | 300 | Keyed | 23mm | 8mm | 1-3 Days | $42.99 |
| M300M2408S | 300 24MMBX1/4K : Magnaloy 300 HUB 24MM BORE X 1/4" KEY | 300 | Keyed | 24mm | 0.25 (1/4") | 1-3 Days | $53.99 |
| M300M2410S | 300 24MMBX5/16K : Magnaloy 300 HUB 24MM BORE X 5/16" KEY SPECIAL | 300 | Keyed | 24mm | 0.3125 (5/16") | 1-3 Days | $53.99 |
| M300M2406 | 300 24MMBX6MMK : Magnaloy 300 HUB 24MM BORE X 6MM KEY | 300 | Keyed | 24mm | 6mm | 1-3 Days | $42.99 |
| M300M2408 | 300 24MMBX8MMK : Magnaloy 300 HUB 24MM BORE X 8MM KEY METRIC | 300 | Keyed | 24mm | 8mm | 1-3 Days | $42.99 |
| M300M2408DSS | 300 24MMBX8MMK : Magnaloy 300 HUB 24MM BORE X 8MM KEY W/DBL SET SCREW | 300 | Keyed | 24mm | 8mm | 7-10 Days | $45.99 |
| M300M24N | 300 24MMBXNOK : Magnaloy 300 HUB 24MMBORE X NO KEY WAY SPECIAL | 300 | Keyed | 24mm | NONE | 1-3 Days | $42.99 |
| M300M2510 | 300 25MMBX10MMK : Magnaloy 300 HUB 25MM BORE X 10MM KEY METRIC | 300 | Keyed | 25mm | 10mm | 1-3 Days | $42.99 |
| M300M2510S | 300 25MMBX5/16K : Magnaloy 300 HUB 25MM BORE X 5/16" KEY SPECIAL | 300 | Keyed | 25mm | 0.3125 (5/16") | 1-3 Days | $53.99 |
| M300M2506 | 300 25MMBX6MMK : Magnaloy 300 HUB 25MM BORE X 6MM KEY METRIC | 300 | Keyed | 25mm | 6mm | 1-3 Days | $42.99 |
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.
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.