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:
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Series 100 Keyed Flexible Insert Coupling Halves
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Series 200 Keyed Flexible Insert Coupling Halves
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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 ▼ |
|---|---|---|---|---|---|---|---|
| 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 |
| M30002008S | 300 5/8BX1/4K : Magnaloy 300 HUB 5/8" BORE X 1/4" KEY SPECIAL | 300 | Keyed | 0.625 (5/8") | 0.25 (1/4") | 1-3 Days | $42.99 |
| M30002004S | 300 5/8BX1/8K : Magnaloy 300 HUB 5/8" BORE X 1/8" KEY SPECIAL | 300 | Keyed | 0.625 (5/8") | 0.125 (1/8") | 1-3 Days | $42.99 |
| M30002006C | 300 5/8BX3/16K : Magnaloy 300 HUB 5/8" BORE X 3/16" KEY W/CLAMP | 300 | Keyed | 0.625 (5/8") | 0.1875 (3/16") | 1-3 Days | $67.99 |
| M30002006 | 300 5/8BX3/16K : Magnaloy 300 HUB 5/8" BORE X 3/16" KEY | 300 | Keyed | 0.625 (5/8") | 0.1875 (3/16") | Same Day | $31.99 |
| M30002003S | 300 5/8BX3/32 : Magnaloy 300 HUB 5/8" BORE X 3/32 SPECIAL | 300 | Keyed | 0.625 (5/8") | 0.09375 (3/32") | 1-3 Days | $42.99 |
| M300020M04S | 300 5/8BX4MM : Magnaloy 300 HUB 5/8" BORE X 4MM SPECIAL | 300 | Keyed | 0.625 (5/8") | 4mm | 1-3 Days | $42.99 |
| M30002005 | 300 5/8BX5/32K : Magnaloy 300 HUB 5/8" BORE X 5/32" KEY | 300 | Keyed | 0.625 (5/8") | 0.15625 (5/32") | Same Day | $31.99 |
| M300020N | 300 5/8BXNOK : Magnaloy 300 HUB 5/8" BORE X NO KEY | 300 | Keyed | 0.625 (5/8") | NONE | 1-3 Days | $42.99 |
| M30001406S | 300 7/16BX3/16K : Magnaloy 300 HUB 7/16" BORE X 3/16" KEY SPECIAL | 300 | Keyed | 0.4375 (7/16") | 0.1875 (3/16") | 1-3 Days | $42.99 |
| M300014N | 300 7/16BXNOK : Magnaloy 300 HUB 7/16" BORE X NO KEY | 300 | Keyed | 0.4375 (7/16") | NONE | 1-3 Days | $42.99 |
| M30002808C | 300 7/8BX1/4K : Magnaloy 300 HUB 7/8" BORE X 1/4" KEY W/CLAMP | 300 | Keyed | 0.875 (7/8") | 0.25 (1/4") | 1-3 Days | $63.99 |
| M30002808 | 300 7/8BX1/4K : Magnaloy 300 HUB 7/8" BORE X 1/4" KEY | 300 | Keyed | 0.875 (7/8") | 0.25 (1/4") | Same Day | $31.99 |
| M30002804S | 300 7/8BX1/8K : Magnaloy 300 HUB 7/8" BORE X 1/8" KEY SPECIAL | 300 | Keyed | 0.875 (7/8") | 0.125 (1/8") | 1-3 Days | $42.99 |
| M30002806C | 300 7/8BX3/16K : Magnaloy 300 HUB 7/8" BORE X 3/16" KEY W/CLAMP | 300 | Keyed | 0.875 (7/8") | 0.1875 (3/16") | 1-3 Days | $63.99 |
| M30002806 | 300 7/8BX3/16K : Magnaloy 300 HUB 7/8" BORE X 3/16" KEY | 300 | Keyed | 0.875 (7/8") | 0.1875 (3/16") | Same Day | $31.99 |
| M30002812S | 300 7/8BX3/8K : Magnaloy 300 HUB 7/8" BORE X 3/8" KEY SPECIAL | 300 | Keyed | 0.875 (7/8") | 0.375 (3/8") | 1-3 Days | $42.99 |
| M30002810S | 300 7/8BX5/16K : Magnaloy 300 HUB 7/8" BORE X 5/16" KEY SPECIAL | 300 | Keyed | 0.875 (7/8") | 0.3125 (5/16") | 1-3 Days | $53.99 |
| M30002805S | 300 7/8BX5/32K : Magnaloy 300 HUB 7/8" BORE X 5/32" KEY SPECIAL | 300 | Keyed | 0.875 (7/8") | 0.15625 (5/32") | 1-3 Days | $42.99 |
| M300028NC | 300 7/8BXNOK : Magnaloy 300 HUB 7/8" BORE X NO KEY W/CLAMP | 300 | Keyed | 0.875 (7/8") | NONE | 1-3 Days | $73.99 |
| M300028N | 300 7/8BXNOK : Magnaloy 300 HUB 7/8" BORE X NO KEY | 300 | Keyed | 0.875 (7/8") | NONE | 1-3 Days | $42.99 |
| M30001804 | 300 9/16BX1/8 : Magnaloy 300 HUB 9/16" BORE X 1/8 | 300 | Keyed | 0.5625 (9/16") | 0.125 (1/8") | 1-3 Days | $31.99 |
| M30001806S | 300 9/16MMBX3/16K : Magnaloy 300 HUB 9/16MM BORE X 3/16" KEY SPECIAL | 300 | Keyed | 0.5625 (9/16") | 0.1875 (3/16") | 1-3 Days | $42.99 |
| M300R | 300 NO BORE : Magnaloy 300 HUB NO BORE | 300 | Keyed | NONE | NONE | 1-3 Days | $28.99 |
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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 ▼ |
|---|---|---|---|---|---|---|---|
| M40002812S | 400 7/8BX3/8K : Magnaloy 400 HUB 7/8" BORE X 3/8" KEY SPECIAL | 400 | Keyed | 0.875 (7/8") | 0.375 (3/8") | 1-3 Days | $59.99 |
| M40002810S | 400 7/8BX5/16K : Magnaloy 400 HUB 7/8" BORE X 5/16" KEY SPECIAL | 400 | Keyed | 0.875 (7/8") | 0.3125 (5/16") | 1-3 Days | $59.99 |
| M40002805S | 400 7/8BX5/32K : Magnaloy 400 HUB 7/8" BORE X 5/32" KEY | 400 | Keyed | 0.875 (7/8") | 0.15625 (5/32") | 1-3 Days | $59.99 |
| M400028N | 400 7/8BXNOK : Magnaloy 400 HUB 7/8" BORE X NO KEY | 400 | Keyed | 0.875 (7/8") | NONE | 1-3 Days | $59.99 |
| M400R | 400 NO BORE : Magnaloy 400 HUB NO BORE | 400 | Keyed | NONE | NONE | 1-3 Days | $41.99 |
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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 ▼ |
|---|---|---|---|---|---|---|---|
| M500M2808 | 500 28MMBX8MMK : Magnaloy 500 HUB 28MM BORE X 8MM KEY METRIC | 500 | Keyed | 28mm | 8mm | 1-3 Days | $79.99 |
| M50020016C | 500 2BX1/2K : Magnaloy 500 HUB 2" BORE X 1/2" KEY W/CLAMP | 500 | Keyed | 2" | 0.5 (1/2") | 1-3 Days | $96.99 |
| M50020016 | 500 2BX1/2K : Magnaloy 500 HUB 2" BORE X 1/2" KEY | 500 | Keyed | 2" | 0.5 (1/2") | Same Day | $62.99 |
| M50020008S | 500 2BX1/4K : Magnaloy 500 HUB 2" BORE X 1/4" KEY SPECIAL | 500 | Keyed | 2" | 0.25 (1/4") | 1-3 Days | $79.99 |
| M50020012S | 500 2BX3/8K : Magnaloy 500 HUB 2" BORE X 3/8" KEY SPECIAL | 500 | Keyed | 2" | 0.375 (3/8") | 1-3 Days | $79.99 |
| M500200NC | 500 2BXNOK : Magnaloy 500 HUB 2" BORE X NO KEY W/CLAMP | 500 | Keyed | 2" | NONE | Same Day | $109.99 |
| M500200N | 500 2BXNOK : Magnaloy 500 HUB 2" BORE X NO KEY | 500 | Keyed | 2" | NONE | 1-3 Days | $79.99 |
| M50002408S | 500 3/4BX1/4K : Magnaloy 500 HUB 3/4" BORE X 1/4" KEY SPECIAL | 500 | Keyed | 0.75 (3/4") | 0.25 (1/4") | 1-3 Days | $79.99 |
| M50002404S | 500 3/4BX1/8K : Magnaloy 500 HUB 3/4" BORE X 1/8" KEY SPECIAL | 500 | Keyed | 0.75 (3/4") | 0.125 (1/8") | 1-3 Days | $79.99 |
| M50002406C | 500 3/4BX3/16K : Magnaloy 500 HUB 3/4" BORE X 3/16" KEY W/CLAMP | 500 | Keyed | 0.75 (3/4") | 0.1875 (3/16") | 1-3 Days | $96.99 |
| M50002406 | 500 3/4BX3/16K : Magnaloy 500 HUB 3/4" BORE X 3/16" KEY | 500 | Keyed | 0.75 (3/4") | 0.1875 (3/16") | 1-3 Days | $62.99 |
| M500024N | 500 3/4BXNOK : Magnaloy 500 HUB 3/4" BORE X NO KEY | 500 | Keyed | 0.75 (3/4") | NONE | 1-3 Days | $79.99 |
| M500M3014 | 500 30MMBX14MMK : Magnaloy 500 HUB 30MM BORE X 14MM KEY | 500 | Keyed | 30mm | 14mm | 1-3 Days | $79.99 |
| M500M3012S | 500 30MMBX3/8K : Magnaloy 500 HUB 30MM BORE X 3/8" KEY SPECIAL. | 500 | Keyed | 30mm | 0.375 (3/8") | 1-3 Days | $95.99 |
| M500M3010S | 500 30MMBX5/16K : Magnaloy 500 HUB 30MM BORE X 5/16" KEY SPECIAL. | 500 | Keyed | 30mm | 0.3125 (5/16") | 1-3 Days | $95.99 |
| M500M3008 | 500 30MMBX8MMK : Magnaloy 500 HUB 30MM BORE X 8MM KEY METRIC | 500 | Keyed | 30mm | 8mm | 1-3 Days | $79.99 |
| M500M31N | 500 31MMBXNOK : Magnaloy 500 HUB 31MM BORE X NO KEY | 500 | Keyed | 31mm | NONE | 1-3 Days | $79.99 |
| M500M3208S | 500 32MMBX1/4K : Magnaloy 500 HUB 32MM BORE X 1/4" KEY SPECIAL | 500 | Keyed | 32mm | 0.25 (1/4") | 1-3 Days | $95.99 |
| M500M3210 | 500 32MMBX10MMK : Magnaloy 500 HUB 32MM BORE X 10MM KEY METRIC | 500 | Keyed | 32mm | 10mm | 1-3 Days | $79.99 |
| M500M3210C | 500 32MMBX10MMK : Magnaloy 500 HUB 32MM BORE X 10MM KEY W/CLAMP | 500 | Keyed | 32mm | 10mm | 1-3 Days | $112.99 |
| M500M3212 | 500 32MMBX12MMK : Magnaloy 500 HUB 32MM BORE X 12MM KEY | 500 | Keyed | 32mm | 12mm | 1-3 Days | $79.99 |
| M500M3206 | 500 32MMBX6MMK : Magnaloy 500 HUB 32MM BORE X 6MM KEY SPECIAL | 500 | Keyed | 32mm | 6mm | 1-3 Days | $95.99 |
| M500M3207 | 500 32MMBX7MMK : Magnaloy 500 HUB 32MM BORE X 7MM KEY | 500 | Keyed | 32mm | 7mm | 1-3 Days | $95.99 |
| M500M3208 | 500 32MMBX8MMK : Magnaloy 500 HUB 32MM BORE X 8MM KEY METRIC | 500 | Keyed | 32mm | 8mm | 1-3 Days | $79.99 |
| M500M32N | 500 32MMBXNOK : Magnaloy 500 HUB 32MM BORE X NO KEY | 500 | Keyed | 32mm | NONE | 1-3 Days | $79.99 |
| M500M3510 | 500 35MMBX10MMK : Magnaloy 500 HUB 35MM BORE X 10MM KEY METRIC | 500 | Keyed | 35mm | 10mm | 1-3 Days | $79.99 |
| M500M3510C | 500 35MMBX10MMK : Magnaloy 500 HUB 35MM BORE X 10MM KEY W/CLAMP | 500 | Keyed | 35mm | 10mm | 1-3 Days | $112.99 |
| M500M3512 | 500 35MMBX12MMK : Magnaloy 500 HUB 35MM BORE X 12MM KEY | 500 | Keyed | 35mm | 12mm | 1-3 Days | $79.99 |
| M500M3514 | 500 35MMBX14MMK : Magnaloy 500 HUB 35MM BORE X 14MM KEY | 500 | Keyed | 35mm | 14mm | 1-3 Days | $79.99 |
| M500M3508 | 500 35MMBX8MMK : Magnaloy 500 HUB 35MM BORE X 8MM KEY | 500 | Keyed | 35mm | 8mm | 1-3 Days | $79.99 |
| M500M35NC | 500 35MMBXNOK : Magnaloy 500 HUB 35MM BORE X NO KEY W/CLAMP | 500 | Keyed | 35mm | NONE | 1-3 Days | $112.99 |
| M500M35N | 500 35MMBXNOK : Magnaloy 500 HUB 35MM BORE X NO KEY | 500 | Keyed | 35mm | NONE | 1-3 Days | $79.99 |
| M500M3810C | 500 38MMBX10MMK : Magnaloy 500 HUB 38MM BORE X 10MM KEY METRIC W/CLAMP | 500 | Keyed | 38mm | 10mm | 1-3 Days | $112.99 |
| M500M3810 | 500 38MMBX10MMK : Magnaloy 500 HUB 38MM BORE X 10MM KEY METRIC | 500 | Keyed | 38mm | 10mm | 1-3 Days | $79.99 |
| M500M3812 | 500 38MMBX12MMK : Magnaloy 500 HUB 38MM BORE X 12MM KEY | 500 | Keyed | 38mm | 12mm | 1-3 Days | $79.99 |
| M500M4012C | 500 40MMBX12MMK : Magnaloy 500 HUB 40MM BORE X 12MM KEY METRIC W/CLAMP | 500 | Keyed | 40mm | 12mm | 1-3 Days | $112.99 |
| M500M4012 | 500 40MMBX12MMK : Magnaloy 500 HUB 40MM BORE X 12MM KEY METRIC | 500 | Keyed | 40mm | 12mm | 1-3 Days | $79.99 |
| M500M4013 | 500 40MMBX13MMK : Magnaloy 500 HUB 40MM BORE X 13MM KEY | 500 | Keyed | 40mm | 13mm | 1-3 Days | $95.99 |
| M500M4014 | 500 40MMBX14MMK : Magnaloy 500 HUB 40MM BORE X 14MM KEY | 500 | Keyed | 40mm | 14mm | 1-3 Days | $79.99 |
| M500M4210 | 500 42MMBX10MMK : Magnaloy 500 HUB 42MM BORE X 10MM KEY METRIC | 500 | Keyed | 42mm | 10mm | 1-3 Days | $79.99 |
| M500M4212C | 500 42MMBX12MMK : Magnaloy 500 HUB 42MM BORE X 12MM KEY METRIC W/CLAMP | 500 | Keyed | 42mm | 12mm | 1-3 Days | $122.99 |
| M500M4212 | 500 42MMBX12MMK : Magnaloy 500 HUB 42MM BORE X 12MM KEY METRIC | 500 | Keyed | 42mm | 12mm | 1-3 Days | $79.99 |
| M500M4214 | 500 42MMBX14MMK : Magnaloy 500 HUB 42MM BORE X 14MM KEY | 500 | Keyed | 42mm | 14mm | 1-3 Days | $79.99 |
| M500M4411 | 500 44MMBX11MMK : Magnaloy 500 HUB 44MM BORE X 11MM KEY | 500 | Keyed | 44mm | 11mm | 1-3 Days | $95.99 |
| M500M4412 | 500 44MMBX12MMK : Magnaloy 500 HUB 44MM BORE X 12MM KEY | 500 | Keyed | 44mm | 12mm | 1-3 Days | $79.99 |
| M500M4512 | 500 45MMBX12MMK : Magnaloy 500 HUB 45MM BORE X 12MM KEY | 500 | Keyed | 45mm | 12mm | 1-3 Days | $79.99 |
| M500M4514 | 500 45MMBX14MMK : Magnaloy 500 HUB 45MM BORE X 14MM KEY METRIC | 500 | Keyed | 45mm | 14mm | 1-3 Days | $79.99 |
| M500M4514C | 500 45MMBX14MMK : Magnaloy 500 HUB 45MM BORE X 14MM KEYAY W/CLAMP | 500 | Keyed | 45mm | 14mm | 1-3 Days | $112.99 |
| M500M4614 | 500 46MMBX14MMK : Magnaloy 500 HUB 46MM BORE X 14MM KEY | 500 | Keyed | 46mm | 14mm | 1-3 Days | $79.99 |
| M500M4713 | 500 47MMBX13MMK : Magnaloy 500 HUB 47MM BORE X 13MM KEY | 500 | Keyed | 47mm | 13mm | 1-3 Days | $79.99 |
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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 ▼ |
|---|---|---|---|---|---|---|---|
| M600M6518 | 600 65MMBX18MMK : Magnaloy 600 HUB 65MM BORE X 18MM KEY METRIC | 600 | Keyed | 65mm | 18mm | 1-3 Days | $120.99 |
| M600M6520 | 600 65MMBX20MMK : Magnaloy 600 HUB 65MM BORE X 20MM KEY METRIC | 600 | Keyed | 65mm | 20mm | 1-3 Days | $120.99 |
| M60002808 | 600 7/8BX1/4K : Magnaloy 600 HUB 7/8" BORE X 1/4" KEY | 600 | Keyed | 0.875 (7/8") | 0.25 (1/4") | 1-3 Days | $96.99 |
| M60002806 | 600 7/8BX3/16K : Magnaloy 600 HUB 7/8" BORE X 3/16" KEY | 600 | Keyed | 0.875 (7/8") | 0.1875 (3/16") | 1-3 Days | $96.99 |
| M600R | 600 NO BORE : Magnaloy 600 HUB NO BORE | 600 | Keyed | NONE | NONE | 1-3 Days | $83.99 |
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Series 700 Keyed Flexible Insert Coupling Halves
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Series 800 Keyed Flexible Insert Coupling Halves
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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.
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.