Shop 900 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 900 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 |
|---|---|---|---|---|---|---|---|
| M90012414S | 900 1-3/4BX7/16K : Magnaloy 900 HUB 1-3/4" BORE X 7/16" KEY SPECIAL | 900 | Keyed | 1.75 (1-3/4") | 0.4375 (7/16") | 1-3 Days | $936.99 |
| M90011214S | 900 1-3/8BX7/16K : Magnaloy 900 HUB 1-3/8" BORE X 7/16" KEY SPECIAL | 900 | Keyed | 1.375 (1-3/8") | 0.4375 (7/16") | 1-3 Days | $936.99 |
| M90012816 | 900 1-7/8BX1/2K : Magnaloy 900 HUB 1-7/8" BORE X 1/2" KEY | 900 | Keyed | 1.875 (1-7/8") | 0.5 (1/2") | 1-3 Days | $901.99 |
| M900M10028 | 900 100MMBX28MMK : Magnaloy 900 HUB 100MM BORE X28MM KEY METRIC SPECIAL | 900 | Keyed | 100mm | 28mm | 1-3 Days | $936.99 |
| M900M10028DSS | 900 100MMBX28MMK : Magnaloy 900 HUB 100MM BORE X 28MM KEY W/DBL SET SCREW | 900 | Keyed | 100mm | 28mm | 7-10 Days | $943.99 |
| M900M10028DSS45 | 900 100MMBX28MMK : Magnaloy 900 HUB 100MM BORE X 28MM KEY DBL SET SCREW 45 DEG | 900 | Keyed | 100mm | 28mm | 7-10 Days | $943.99 |
| M90021620DSS | 900 2-1/2BX5/8K : Magnaloy 900 HUB 2-1/2" BORE X 5/8" KEY W/DBL SET SCREW | 900 | Keyed | 2.5 (2-1/2") | 0.625 (5/8") | 7-10 Days | $909.99 |
| M90021620DSS45 | 900 2-1/2BX5/8K : Magnaloy 900 HUB 2-1/2" BORE X 5/8" KEY DBL SET SCREW 45 DEG | 900 | Keyed | 2.5 (2-1/2") | 0.625 (5/8") | 7-10 Days | $909.99 |
| M90021620 | 900 2-1/2BX5/8K : Magnaloy 900 HUB 2-1/2" BORE X 5/8" KEY | 900 | Keyed | 2.5 (2-1/2") | 0.625 (5/8") | 1-3 Days | $901.99 |
| M90020816 | 900 2-1/4BX1/2K : Magnaloy 900 HUB 2-1/4" BORE X 1/2" KEY | 900 | Keyed | 2.25 (2-1/4") | 0.5 (1/2") | 1-3 Days | $901.99 |
| M90020416 | 900 2-1/8BX1/2K : Magnaloy 900 HUB 2-1/8" BORE X 1/2" KEY | 900 | Keyed | 2.125 (2-1/8") | 0.5 (1/2") | 1-3 Days | $901.99 |
| M90020420 | 900 2-1/8BX5/8K : Magnaloy 900 HUB 2-1/8" BORE X 5/8" KEY SPECIAL | 900 | Keyed | 2.125 (2-1/8") | 0.625 (5/8") | 1-3 Days | $936.99 |
| M90023024S | 900 2-15/16BX3/4K : Magnaloy 900 HUB 2-15/16" BORE X 3/4 KEY SPECIAL | 900 | Keyed | 2.9375 (2-15/16") | 0.75 (3/4") | 1-3 Days | $936.99 |
| M90022420 | 900 2-3/4BX5/8K : Magnaloy 900 HUB 2-3/4" BORE X 5/8" KEY | 900 | Keyed | 2.75 (2-3/4") | 0.625 (5/8") | 1-3 Days | $901.99 |
| M90022428S | 900 2-3/4BX7/8K : Magnaloy 900 HUB 2-3/4" BORE X7/8" KEY SPECIAL | 900 | Keyed | 2.75 (2-3/4") | 0.875 (7/8") | 1-3 Days | $936.99 |
| M90021224S | 900 2-3/8BX3/4K : Magnaloy 900 HUB 2-3/8" BORE X 3/4 KEY SPECIAL | 900 | Keyed | 2.375 (2-3/8") | 0.75 (3/4") | 1-3 Days | $936.99 |
| M90021220 | 900 2-3/8BX5/8K : Magnaloy 900 HUB 2-3/8" BORE X 5/8" KEY | 900 | Keyed | 2.375 (2-3/8") | 0.625 (5/8") | 1-3 Days | $901.99 |
| M90022020 | 900 2-5/8BX5/8K : Magnaloy 900 HUB 2-5/8" BORE X 5/8" KEY | 900 | Keyed | 2.625 (2-5/8") | 0.625 (5/8") | 1-3 Days | $901.99 |
| M90022824DSS | 900 2-7/8BX3/4K : Magnaloy 900 HUB 2-7/8" BORE X 3/4" KEY W/DBL SET SCREW | 900 | Keyed | 2.875 (2-7/8") | 0.75 (3/4") | 7-10 Days | $936.99 |
| M90022824 | 900 2-7/8BX3/4K : Magnaloy 900 HUB 2-7/8" BORE X 3/4" KEY | 900 | Keyed | 2.875 (2-7/8") | 0.75 (3/4") | 1-3 Days | $901.99 |
| M90020016 | 900 2BX1/2K : Magnaloy 900 HUB 2" BORE X 1/2" KEY | 900 | Keyed | 2" | 0.5 (1/2") | 1-3 Days | $901.99 |
| M90031628 | 900 3-1/2BX7/8K : Magnaloy 900 HUB 3-1/2" BORE X 7/8" KEY | 900 | Keyed | 3.5 (3-1/2") | 0.875 (7/8") | 1-3 Days | $901.99 |
| M90030824DSS | 900 3-1/4BX3/4K : Magnaloy 900 HUB 3-1/4" BORE X 3/4" KEY W/DBL SET SCREW | 900 | Keyed | 3.25 (3-1/4") | 0.75 (3/4") | 7-10 Days | $909.99 |
| M90030824 | 900 3-1/4BX3/4K : Magnaloy 900 HUB 3-1/4" BORE X 3/4" KEY | 900 | Keyed | 3.25 (3-1/4") | 0.75 (3/4") | 1-3 Days | $901.99 |
| M90030424S | 900 3-1/8BX3/4K : Magnaloy 900 HUB 3-1/8" BORE X 3/4 KEY SPECIAL | 900 | Keyed | 3.125 (3-1/8") | 0.75 (3/4") | 1-3 Days | $936.99 |
| M90032424S | 900 3-3/4BX3/4K : Magnaloy 900 HUB 3-3/4" BORE X 3/4" KEY SPECIAL | 900 | Keyed | 3.75 (3-3/4") | 0.75 (3/4") | 1-3 Days | $936.99 |
| M90032428 | 900 3-3/4BX7/8K : Magnaloy 900 HUB 3-3/4" BORE X 7/8" KEY | 900 | Keyed | 3.75 (3-3/4") | 0.875 (7/8") | 1-3 Days | $901.99 |
| M90031228DSS | 900 3-3/8BX7/8K : Magnaloy 900 HUB 3-3/8" BORE X 7/8" KEY W/DBL SET SCREW | 900 | Keyed | 3.375 (3-3/8") | 0.875 (7/8") | 7-10 Days | $909.99 |
| M90031228 | 900 3-3/8BX7/8K : Magnaloy 900 HUB 3-3/8" BORE X 7/8" KEY | 900 | Keyed | 3.375 (3-3/8") | 0.875 (7/8") | 1-3 Days | $901.99 |
| M90032028 | 900 3-5/8BX7/8K : Magnaloy 900 HUB 3-5/8" BORE X 7/8" KEY | 900 | Keyed | 3.625 (3-5/8") | 0.875 (7/8") | 1-3 Days | $901.99 |
| M90031428S | 900 3-7/16BX7/8K : Magnaloy 900 HUB 3-7/16 BORE X7/8" KEY SPECIAL | 900 | Keyed | 3.4375 (3-7/16") | 0.875 (7/8") | 1-3 Days | $936.99 |
| M90032832DSS45 | 900 3-7/8BX1K : Magnaloy 900 HUB 3-7/8" BORE X 1" KEY W/DBL SET SCREW AT 45DEG | 900 | Keyed | 3.875 (3-7/8") | 1" | 7-10 Days | $909.99 |
| M90032832DSS | 900 3-7/8BX1K : Magnaloy 900 HUB 3-7/8" BORE X 1" KEY W/DBL SET SCREW | 900 | Keyed | 3.875 (3-7/8") | 1" | 7-10 Days | $909.99 |
| M90032832 | 900 3-7/8BX1K : Magnaloy 900 HUB 3-7/8" BORE X 1" KEY | 900 | Keyed | 3.875 (3-7/8") | 1" | 1-3 Days | $901.99 |
| M90030032S | 900 3BX1 : Magnaloy 900 HUB 3" BORE X 1 SPECIAL | 900 | Keyed | 3" | 1" | 1-3 Days | $936.99 |
| M90030024 | 900 3BX3/4K : Magnaloy 900 HUB 3" BORE X 3/4" KEY | 900 | Keyed | 3" | 0.75 (3/4") | 1-3 Days | $901.99 |
| M90030020S | 900 3BX5/8K : Magnaloy 900 HUB 3" BORE X 5/8" KEY SPECIAL | 900 | Keyed | 3" | 0.625 (5/8") | 1-3 Days | $970.99 |
| M90041640 | 900 4-1/2BX1-1/4K : Magnaloy 900 HUB 4-1/2" BORE X 1-1/4" KEY | 900 | Keyed | 4.5 (4-1/2") | 1.25 ( 1-1/4") | 1-3 Days | $901.99 |
| M90041632DSS | 900 4-1/2BX1K : Magnaloy 900 HUB 4-1/2" BORE X 1" KEY W/DBL SET SCREW | 900 | Keyed | 4.5 (4-1/2") | 1" | 7-10 Days | $909.99 |
| M90041632 | 900 4-1/2BX1K : Magnaloy 900 HUB 4-1/2" BORE X 1" KEY | 900 | Keyed | 4.5 (4-1/2") | 1" | 1-3 Days | $901.99 |
| M90040828S | 900 4-1/4B X 7/8K : Magnaloy 900 HUB 4-1/4" BORE X 7/8" KEY SPECIAL | 900 | Keyed | 4.25 (4-1/4") | 0.875 (7/8") | 1-3 Days | $970.99 |
| M90040832DSS | 900 4-1/4BX1K : Magnaloy 900 HUB 4-1/4" BORE X 1" KEY W/DBL SET SCREW | 900 | Keyed | 4.25 (4-1/4") | 1" | 7-10 Days | $909.99 |
| M90040832 | 900 4-1/4BX1K : Magnaloy 900 HUB 4-1/4" BORE X 1" KEY | 900 | Keyed | 4.25 (4-1/4") | 1" | 1-3 Days | $901.99 |
| M90040432 | 900 4-1/8BX1K : Magnaloy 900 HUB 4-1/8" BORE X 1" KEY | 900 | Keyed | 4.125 (4-1/8") | 1" | 1-3 Days | $901.99 |
| M90042440 | 900 4-3/4BX1-1/4K : Magnaloy 900 HUB 4-3/4" BORE X 1-1/4" KEY | 900 | Keyed | 4.75 (4-3/4") | 1.25 ( 1-1/4") | 1-3 Days | $901.99 |
| M90041232 | 900 4-3/8BX1K : Magnaloy 900 HUB 4-3/8" BORE X 1" KEY | 900 | Keyed | 4.375 (4-3/8") | 1" | 1-3 Days | $901.99 |
| M90042040 | 900 4-5/8BX1-1/4K : Magnaloy 900 HUB 4-5/8" BORE X 1-1/4" KEY | 900 | Keyed | 4.625 (4-5/8") | 1.25 ( 1-1/4") | 1-3 Days | $901.99 |
| M90041432S | 900 4-7/16B X 1K : Magnaloy 900 HUB 4-7/16" BORE X 1" KEY SPECIAL | 900 | Keyed | 4.4375 (4-7/16") | 1" | 1-3 Days | $936.99 |
| M90040032DSS | 900 4BX1K : Magnaloy 900 HUB 4" BORE X 1" KEY W/DBL SET SCREW | 900 | Keyed | 4" | 1" | 7-10 Days | $936.99 |
| M90040032 | 900 4BX1K : Magnaloy 900 HUB 4" BORE X 1" KEY | 900 | Keyed | 4" | 1" | 1-3 Days | $901.99 |
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.