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GEARS & GEARBOXES Apex DynAmics geArboxes
cut Downtime with increAseD flexibility for cA group
Building envelope manufacturer and contractor CA Group has praised the support it received from gearbox specialist Apex Dynamics UK to redesign the gearbox specifications in its converting machine, delivering much greater flexibility and dramatically cutting maintenance downtime. The company has a converting
machine for the manufacture of steel sections for cladding containing a series of 20 Apex Dynamics spiral bevel gearboxes working together. CA Group’s maintenance team identified a problem with the previous set-up, as the gearboxes were
connected by a solid shaft all the way through, which did not allow for any flexibility of movement. This flaw in the overall design meant that seals were under strain and
often began to leak, leading to high failure rates. Additionally, if a gearbox failed or a seal blew out, it would result in 5-6 hours of downtime to repair the machine because of the difficulty of accessing the gearboxes.
working together to find the ideal solution Engineering teams from Apex Dynamics and CA Group worked together to come up with a new design that provides the flex needed to prevent parts failure. By developing a new coupling capable of flexing between short shafts, the collaborative project provided the damping needed between the gearboxes to cater for any misalignment of the base or face of the machine. A new platform for the gearboxes to sit on has also been created for the
converting machine that reduces downtime in the event of a gearbox failure. The base of the machine is no longer one solid piece and so, rather than having to dismantle elements of the machine in order to change gearboxes, the platform can simply slide in and out to change gearboxes within 20-30 minutes, compared with 5-6 hours previously.
benefits of the new design Retrofitting the CA Group converting machine has been such a success that the company reports it has not seen any gearbox failures or seals blow in the more than two years since the new solution was implemented and it has been gradually switching all of its machines over to the new configuration. The use of Apex Dynamics AT170JH through-hole spiral bevel gearboxes
in the converting machine provides CA Group with low backlash, high resilience from the robust stainless steel design, low noise and excellent nominal torque. High efficiency, compact, AT-H series of spiral bevel gearboxes are easy to mount, with one input shaft and a through hollow output shaft with keyway to reduce backlash. Stuart Lowe, CA Group Works engineering manager, commented: “We
really appreciate the support provided by the knowledgeable expert team at Apex Dynamics. Having identified the problem, this was a truly collaborative project that resulted in the right solution to provide the flexibility needed and ensure our converting machine runs smoothly.” Phil Waldock, CA Group maintenance supervisor, added: “We are really
happy with the solution from Apex Dynamics UK. Since the design has been changed over, there has not been a single gearbox fail or seal blow out.” Apex Dynamics UK northern area manager, Malcolm Hillary, who worked
closely with CA Group on the project, added: “We were very pleased to be able to help CA Group find the correct solution. They came to us with issues surrounding gearboxes leaking and we confirmed their analysis of the problem. Working in partnership, we were able to successfully solve the issues of non-flexibility between the gearboxes and make the converting machine easier to maintain in the future.”
Apex Dynamics uK
www.apexdynauk.com
FEBRUARY 2024 Design solutions 17
PRODUCTS
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