Rotating Equipment Specialists
Qualtex technicians and engineers specialise in the repair and maintenance of rotating equipment and associated ancillary plant on industrial sites throughout New Zealand.
Electric Motor Servicing
AC and DC motors with a large range of physical sizes and power ratings require scheduled electrical testing, inspections and mechanical checks including bearing and seal inspection or renewal. The shaft alignment and machine foundations should also checked whilst on site.
High voltage motors require specialised electrical testing to check the integrity of insulation systems, core laminations, rotating rectifiers and thermal protective devices. Ancillaries such as heat exchangers and oil pressure systems can be inspected and overhauled in conjunction with the other testing taking place.
Qualtex specialises in the servicing of white metal bearings.
Fans, Pumps, Gearboxes
All the various rotating equipment types utilise bearings, bushes and lubricants to support and lubricate the internal components. The machine application and the operating environment along with the OEM recommendations will determine the maintenance schedule and time in service before bearings and the lubricants are inspected or renewed.
Qualtex specialises in the inspection, analysis and replacement of critical bearings and components.
Some bearings fitted to fans and larger machines often require cleaning, inspection and the lubricants renewing on an annual basis. With larger machines this is normally undertaken on site.
Fluid pumps require bearing servicing along with the inspection of mechanical seals and impellor condition assessment.
Critical Bearing Fitting
Qualtex has a large range of specialised equipment available enabling technicians to remove and inspect and renew critical bearings with ease. Hydraulic nuts and high pressure oil injection systems allow dismounting and refitting larger bearings and couplings that require high oil pressure to expand the internal diameters to facilitate this process without damaging the components. Our engineers are experienced in performing inspections and measurement of bearing clearances, shaft and housing tolerances and the analysis of lubricant condition to help determine the condition of the machinery.
Machinery Utilised in Food Production
Equipment installed in food manufacturing environments requires specialised maintenance expertise.
Foreign materials, chemicals, and bacteria and pathogens must not be introduced during operation or maintenance. Qualtex technicians are highly trained and experienced in these areas. They regularly inspect and overhaul a large range of rotating plant installed in the Dairy and Food Processing environment throughout New Zealand, particularly during maintenance shuts.
Decanters, Centrifuges, Rotary Valves and specialised fluid pumps are just some examples of the type of machines & equipment serviced by our skilled technicians.
High Speed Spindle Moulders and Routers
The components fitted in high speed manufacturing equipment normally have precision fits and tolerances. Bearing and lubricant condition, shaft and housing fits and tolerances, rotating component straightness and residual unbalance influence high speed machine performance.
Qualtex service expertise ensures that repairs carried out on these components comply with these special engineering requirements. After repairs and checks have been completed, the rotors and spindles are dynamically balanced to ensure vibration is reduced to minimum levels required for trouble free operation and the production of a high grade end product. Balancing of the spindles is generally carried out in the workshop facility.
Following the precision rebuild and balancing of a spindle, it’s then properly run-in on our purpose built test bed.
This is a critical process that maximises bearing and grease life, and minimises the potential risk of a catastrophic failure at start-up.
