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 |
|---|---|---|---|---|---|---|---|
| M300M2507 | 300 25MMBX7MMK : Magnaloy 300 HUB 25MM BORE X 7MM KEY | 300 | Keyed | 25mm | 7mm | 1-3 Days | $53.99 |
| M300M2508 | 300 25MMBX8MMK : Magnaloy 300 HUB 25MM BORE X 8MM KEY METRIC | 300 | Keyed | 25mm | 8mm | 1-3 Days | $42.99 |
| M300M2508DSS | 300 25MMBX8MMK : Magnaloy 300 HUB 25MM BORE X 8MM KEY METRIC DBL SET SCREW | 300 | Keyed | 25mm | 8mm | 7-10 Days | $45.99 |
| M300M2508DSS45 | 300 25MMBX8MMK : Magnaloy 300 HUB 25MM BORE X 8MM KEY DBL SET SCREW AT 45DEG | 300 | Keyed | 25mm | 8mm | 7-10 Days | $45.99 |
| M300M2508C | 300 25MMBX8MMK : Magnaloy 300 HUB 25MM BORE X 8MM KEY W/CLAMP | 300 | Keyed | 25mm | 8mm | 1-3 Days | $73.99 |
| M300M2605 | 300 26MMBX5MMK : Magnaloy 300 HUB 26MM BORE X 5MM KEY | 300 | Keyed | 26mm | 5mm | 1-3 Days | $53.99 |
| M300M2608 | 300 26MMBX8MMK : Magnaloy 300 HUB 26MM BORE X 8MM KEY | 300 | Keyed | 26mm | 8mm | 1-3 Days | $42.99 |
| M300M2708 | 300 27MMBX8MMK : Magnaloy 300 HUB 27MM BORE X 8MM KEY | 300 | Keyed | 27mm | 8mm | 1-3 Days | $42.99 |
| M300M2810 | 300 28MMBX10MMK : Magnaloy 300 HUB 28MM BORE X 10MM KEY | 300 | Keyed | 28mm | 10mm | 1-3 Days | $42.99 |
| M300M2806 | 300 28MMBX6MMK : Magnaloy 300 HUB 28MM BORE X 6MM KEY | 300 | Keyed | 28mm | 6mm | 1-3 Days | $42.99 |
| M300M2807 | 300 28MMBX7MMK : Magnaloy 300 HUB 28MM BORE X 7MM KEY | 300 | Keyed | 28mm | 7mm | 1-3 Days | $42.99 |
| M300M2808 | 300 28MMBX8MMK : Magnaloy 300 HUB 28MM BORE X 8MM KEY METRIC | 300 | Keyed | 28mm | 8mm | 1-3 Days | $42.99 |
| M300M28N | 300 28MMBXNOK : Magnaloy 300 HUB 28MM BORE X NO KEY | 300 | Keyed | 28mm | NONE | 1-3 Days | $42.99 |
| M30002408S | 300 3/4BX1/4K : Magnaloy 300 HUB 3/4" BORE X 1/4" KEY SPECIAL | 300 | Keyed | 0.75 (3/4") | 0.25 (1/4") | 1-3 Days | $42.99 |
| M30002404DSS | 300 3/4BX1/8K : Magnaloy 300 HUB 3/4" BORE X 1/8" KEY W/DBL SET SCREW | 300 | Keyed | 0.75 (3/4") | 0.125 (1/8") | 7-10 Days | $33.99 |
| M30002404C | 300 3/4BX1/8K : Magnaloy 300 HUB 3/4" BORE X 1/8" KEY W/CLAMP | 300 | Keyed | 0.75 (3/4") | 0.125 (1/8") | 1-3 Days | $63.99 |
| M30002404 | 300 3/4BX1/8K : Magnaloy 300 HUB 3/4" BORE X 1/8" KEY | 300 | Keyed | 0.75 (3/4") | 0.125 (1/8") | 1-3 Days | $31.99 |
| M30002406-NYLOC | 300 3/4BX3/16 : Magnaloy 300 HUB 3/4" BORE X 3/16" W/ LIQUID NYLOC | 300 | Keyed | 0.75 (3/4") | 0.1875 (3/16") | 1-3 Days | $33.99 |
| M30002406DSS45 | 300 3/4BX3/16 : Magnaloy 300 HUB 3/4" BORE X 3/16" W/DBL SET SCREW AT 45DEG | 300 | Keyed | 0.75 (3/4") | 0.1875 (3/16") | 7-10 Days | $33.99 |
| M30002406DSS | 300 3/4BX3/16K : Magnaloy 300 HUB 3/4" BORE X 3/16" KEY W/DBL SET SCREW | 300 | Keyed | 0.75 (3/4") | 0.1875 (3/16") | 7-10 Days | $33.99 |
| M30002406C | 300 3/4BX3/16K : Magnaloy 300 HUB 3/4" BORE X 3/16" KEY W/CLAMP | 300 | Keyed | 0.75 (3/4") | 0.1875 (3/16") | 1-3 Days | $63.99 |
| M30002406 | 300 3/4BX3/16K : Magnaloy 300 HUB 3/4" BORE X 3/16" KEY | 300 | Keyed | 0.75 (3/4") | 0.1875 (3/16") | Same Day | $31.99 |
| M30002410S | 300 3/4BX5/16K : Magnaloy 300 HUB 3/4" BORE X 5/16" KEY SPECIAL. | 300 | Keyed | 0.75 (3/4") | 0.3125 (5/16") | 1-3 Days | $42.99 |
| M30002405S | 300 3/4BX5/32K : Magnaloy 300 HUB 3/4" BORE X 5/32" KEY SPECIAL | 300 | Keyed | 0.75 (3/4") | 0.15625 (5/32") | 1-3 Days | $42.99 |
| M300024N | 300 3/4BXNOK : Magnaloy 300 HUB 3/4" BORE X NO KEY | 300 | Keyed | 0.75 (3/4") | NONE | 1-2 Weeks | $42.99 |
| M300012N | 300 3/8BXNOK : Magnaloy 300 HUB 3/8" BORE X NO KEY | 300 | Keyed | 0.375 (3/8") | NONE | 1-3 Days | $42.99 |
| M300M3010 | 300 30MMBX10MMK : Magnaloy 300 HUB 30MM BORE X 10MM KEY METRIC | 300 | Keyed | 30mm | 10mm | 1-3 Days | $42.99 |
| M300M3006 | 300 30MMBX6MMK : Magnaloy 300 HUB 30MM BORE X 6MM KEY | 300 | Keyed | 30mm | 6mm | 1-3 Days | $42.99 |
| M300M3008 | 300 30MMBX8MMK : Magnaloy 300 HUB 30MM BORE X 8MM KEY METRIC | 300 | Keyed | 30mm | 8mm | 1-3 Days | $42.99 |
| M300M3008C | 300 30MMBX8MMK : Magnaloy 300 HUB 30MM BORE X 8MM KEY W/CLAMP | 300 | Keyed | 30mm | 8mm | 1-3 Days | $73.99 |
| M300M3210 | 300 32MMBX10MMK : Magnaloy 300 HUB 32MM BORE X 10MM KEY METRIC | 300 | Keyed | 32mm | 10mm | 1-3 Days | $42.99 |
| M300M3210DSS | 300 32MMBX10MMK : Magnaloy 300 HUB 32MM BORE X 10MM KEY W/DBL SET SCREW | 300 | Keyed | 32mm | 10mm | 7-10 Days | $45.99 |
| M300M3210C | 300 32MMBX10MMK : Magnaloy 300 HUB 32MM BORE X 10MM KEY W/CLAMP | 300 | Keyed | 32mm | 10mm | 1-3 Days | $73.99 |
| M300M3212 | 300 32MMBX12MMK : Magnaloy 300 HUB 32MM BORE X 12MM KEY | 300 | Keyed | 32mm | 12mm | 1-3 Days | $42.99 |
| M300M3206 | 300 32MMBX6MMK : Magnaloy 300 HUB 32MM BORE X 6MM KEY | 300 | Keyed | 32mm | 6mm | 1-3 Days | $73.99 |
| M300M3208 | 300 32MMBX8MMK : Magnaloy 300 HUB 32MM BORE X 8MM KEY | 300 | Keyed | 32mm | 8mm | 1-3 Days | $42.99 |
| M300M3310 | 300 33MMBX10MMK : Magnaloy 300 HUB 33MM BORE X 10MM KEY | 300 | Keyed | 33mm | 10mm | 1-3 Days | $42.99 |
| M300M3510 | 300 35MMBX10MMK : Magnaloy 300 HUB 35MM BORE X 10MM KEY METRIC | 300 | Keyed | 35mm | 10mm | 1-3 Days | $42.99 |
| M300M3508 | 300 35MMBX8MMK : Magnaloy 300 HUB 35MM BORE X 8MM KEY METRIC | 300 | Keyed | 35mm | 8mm | 1-3 Days | $42.99 |
| M300M35N | 300 35MMBXNOK : Magnaloy 300 HUB 35MM BORE X NO KEY | 300 | Keyed | 35mm | NONE | 1-3 Days | $42.99 |
| M300M3810 | 300 38MMBX10MMK : Magnaloy 300 HUB 38MM BORE X 10MM KEY METRIC | 300 | Keyed | 38mm | 10mm | 1-3 Days | $42.99 |
| M300M3810DSS | 300 38MMBX10MMK : Magnaloy 300 HUB 38MM BORE X 10MM KEY W/DBL SET SCREW | 300 | Keyed | 38mm | 10mm | 7-10 Days | $45.99 |
| M300M3810C | 300 38MMBX10MMK : Magnaloy 300 HUB 38MM BORE X 10MM KEY W/CLAMP | 300 | Keyed | 38mm | 10mm | 1-3 Days | $73.99 |
| M300M3812 | 300 38MMBX12MMK : Magnaloy 300 HUB 38MM BORE X 12MM KEY METRIC | 300 | Keyed | 38mm | 12mm | 1-3 Days | $42.99 |
| M300M3808 | 300 38MMBX8MMK : Magnaloy 300 HUB 38MM BORE X 8MM KEY | 300 | Keyed | 38mm | 8mm | 1-3 Days | $42.99 |
| M300M30NC | 300 3OMMBXNOK : Magnaloy 300 HUB 3OMM BORE X NO KEY W/CLAMP | 300 | Keyed | 30mm | NONE | 1-3 Days | $73.99 |
| M300M4010 | 300 40MMBX10MMK : Magnaloy 300 HUB 40MM BORE X 10MM KEY | 300 | Keyed | 40mm | 10mm | 1-3 Days | $53.99 |
| M300M4012 | 300 40MMBX12MMK : Magnaloy 300 HUB 40MM BORE X 12MM KEY METRIC | 300 | Keyed | 40mm | 12mm | 1-3 Days | $42.99 |
| M300M4112 | 300 41MMBX12MMK : Magnaloy 300 HUB 41MM BORE X 12MM KEY | 300 | Keyed | 41mm | 12mm | 1-3 Days | $42.99 |
| M300M4212 | 300 42MMBX12MMK : Magnaloy 300 HUB 42MM BORE X 12MM KEY METRIC | 300 | Keyed | 42mm | 12mm | 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.