Flexible shaft coupling enjoys lifetime of development

The Budgetbeam flexible shaft coupling from ABSSAC has been continuously developed over 40 years of application experience where performance, reliability and low unit cost were the key objectives. Ideally suited to transmit torque values from 0.92Nm to 10.96Nm makes the single piece design ideal for use with encoders or small motors.

There is no single shaft coupling design that is the solution to all applications, states ABSSAC. “However, it is vital that the correct design type is chosen. The ideal shaft coupling has to reliably transmit torque, without backlash, but also absorb the shaft misalignments that can occur during operation.

Correct specification is based on the key operating parameters, which can include the transmittable torque, operating environment, the direction of rotation and the angular or parallel offset of the shafts, to name a few.”

Vital part of the machine

In short, a flexible shaft coupling isn’t just a simple physical connection, but a truly vital part of any machine’s functionality and, when chosen correctly, will deliver many years of reliable service, the company adds. “The design of the Budgetbeam shaft coupling uses a proven helical beam geometry configuration in one, two or three beam starts, but maintaining a single piece construction.

"The unique design delivers high torsional stiffness and torque transmission capability, but also simultaneously absorbs shaft misalignments. A perfected manufacturing process ensures product quality, which ultimately translates into ‘fit and forget’ reliability."

Attaching the shaft coupling to the motor shaft and driven shaft couldn’t be easier, ABSSAC states. “Two designs are available. The set screw shaft attachment design, which uses two sets of grub screws at 120 degrees apart to affix directly on to the shaft at each hub end. Secondly, the integral clamp attachment design, which ensures shaft concentricity and total shaft clamping. 

Special designs at the ready

ABSSAC also offers the availability of special designs, which can suit individual applications on attachment, performance and budget.

Manufactured form high grade Aluminium, the Budgetbeam shaft coupling can accept up to 5 degrees of angular and 0.1mm of parallel shaft misalignment.  Stocked in metric bores from 3mm, 4mm, 5mm, 6mm, 8mm, 10mm to 12mm the Budgetbeam shaft coupling is described as a low-cost superior way of ensuring torsional wind up does not enter into your drive designs. 

“The low-cost connection solution is ideal for closed loop encoder and servomotor applications, as well as lead screw to motor connection, both of which require high torsional stiffness to avoid loss of registration.”