Your Flexible Friend

Written by: Abssac Ltd | Published:

Does your rotary application design demand unusual shaft attachments or perhaps the design requires a higher degree of angular offset than the standard flexible shaft coupling can deliver?

Perhaps your application needs to transmit more torque, but you cannot change the physical envelope size of the existing shaft coupling?

These questions are nothing new to Abssac, who have been solving such problems for over 30 years with its unique specialist Heli-Cal beam product. As the originators of the product, the ability to adapt into applications where simply others cannot follow provides the end user with a means to help solve rotational challenges, without the cost burden normally associated with special or bespoke made products.

By utilising flawless production techniques, the single piece construction totally eliminates any form of friction wear within its design, whilst also ensuring a zero-backlash and no torque loss operation.

The Heli-Cal product, is determined by six major characteristics:

1. The shaft coupling outside diameter
2. The shaft coupling inside diameter
3. The coil thickness
4. The material used
5. The number of coils in the flexure area, i.e. more coils, more flexibility
6. The number of coil starts, i.e. single, double or triple start

By altering these characteristics; torque capacity, angular and parallel misalignment capabiliti es, can be modified to suit specific specifications and or requirements.

Endless Possibilities
Did you know that Abssac has just supplied a fully functional 3mm diameter shaft coupling for a medical application. Using a left and right handed thread shaft for attachment the coupling could accept up to 1 degree of angular off set rotating up to 10,000 rpm. The same customer is now looking at a double start flexure with a 1.5mm outside diameter produced in titanium.

Chris Cattle at Abssac says, “When you consider the Heli-Cal couplings capability as a shaft coupling and then add this ability to integrate the design engineers own end attachment ideas, you have a formidable product combination that other coupling manufacturers cannot supply”

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