Coupling to the shaft of an electric motor (different size shafts)

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SUMMARY

This discussion focuses on coupling solutions for electric motors with different shaft sizes, specifically addressing the use of "Taper Lock" bushes and flexible couplings. Taper Lock systems are available in various sizes and can be selected to fit shafts that need to be joined. Users are advised to consider taper lock HRC couplings for their applications. Additionally, stock splined shafts can be sourced from PTO shaft and drive-line suppliers for easier integration.

PREREQUISITES
  • Understanding of electric motor specifications, particularly 60V brushless motors.
  • Familiarity with coupling types, specifically Taper Lock bushes and HRC couplings.
  • Knowledge of sourcing mechanical components from suppliers like PTO shaft and drive-line vendors.
  • Basic mechanical skills for installation and adjustment of couplings and shafts.
NEXT STEPS
  • Research "Taper Lock" coupling systems and their applications in electric motors.
  • Explore the specifications and installation procedures for taper lock HRC couplings.
  • Investigate suppliers for stock splined shafts suitable for electric motor applications.
  • Learn about the mechanical properties and tolerances of different coupling types.
USEFUL FOR

This discussion is beneficial for mechanical engineers, hobbyists working with electric motors, and anyone involved in the design or modification of motor-driven systems requiring shaft coupling solutions.

bu4ck
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Baluncore said:
You may find it easier to avoid the gear. Short splined shafts are stock items and can be purchased from PTO shaft and drive-line suppliers.

"Taper Lock" bushes are available for any diameter shaft. Google "Taper Lock".
There are several taper lock systems in different sizes available. Select a system that is bigger than either shaft to be joined. Then get two different bushes to fit the shafts.

There are also taper lock flexible couplings of different types.
Look at the taper lock HRC Couplings.
https://pineriversbearings.com.au/power-transmission/couplings/

And there are bigger, more tolerant systems.
https://www.ebay.com.au/itm/332854007597
Hi. Could you help me with some advise on an electric shaft driven motor, the casing/shaft rods are too wide, can I get shorter ones to fit a 60v brushless motor? I’m a complete novice
 
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bu4ck said:
Hi. Could you help me with some advise on an electric shaft driven motor, the casing/shaft rods are too wide, can I get shorter ones to fit a 60v brushless motor? I’m a complete novice
Hi and welcome to PF. We need a lot more information about this before making any recommendations. A photo might help, showing the motor and were it's supposed to go. Some actual dimensions are needed.
 
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