When it comes to Power Lead Screws & Transport Class Ball Screws for medium to heavy duty industrial applications, Abssac works hard strives to keep the customer happy. As the name suggests, the ABSSAC transport and power range of ball and lead screws are aimed at the more industrial type application with dynamic load capacities from 900 to 13449 kgf.
With the transport ball screws, the widely tested recirculating ball bearing nut technology is used as the base of the product. The Transport Industrial class ball screws encompass screw diameters from 16mm up to 80mm as standard. In many cases multiple ball circuits, per ball nut, are employed to achieve greater load capacities making the product suitable for many types of arduous application. Whatever the load, it will be delivered with both high efficiency and low drive torque. With stocked screw lengths of up to 4500mm, for diameters up to 32mm diameter and 5600mm for screws above 40mm in diameter makes this a formidable product. All Transport industrial ball screws can be delivered cut to length and machined ready to fit into the application required support bearing mounts, which are also supplied by ABSSAC.
Require more information on our range of Transport Ball Screws – Click here
Require more information on our range of Transport support bearing mounts – Click here
Continuously stocking up to 3 meter lengths of POWER trapezoidal lead screw diameters of 12mm, 16mm, 20mm, 22mm, 24mm, 30mm, 36mm, 40mm and 50mm in both right and left handed formats, all our screws are complimented with a large selection of industry standard Bronze and Steel nut designs. Abssac is the place for fast delivery, keen prices and knowledgeable sales staff. Our screws are available in both Steel and Stainless Steel, with a large selection of round bodied flanged or non-flanged Bronze nuts from stock. Additionally, we supply weldable square, hex and round steel nuts. Combine this large POWER SCREW range with our ability to supply cut to length or ready to fit, machined bearing journal ends to the screws gives ABSSAC is a winning formula. Don’t forget the complimentary range of radial and thrust mounted bearings linear slides ideal for use with the POWER SCREW ranges
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Recently a customer was redesigning a food packaging machine originally using left hand and right hand opposing screws to operate a high speed gripper in a machine that hot plastic foil sealed ready to cook meals for a leading supermarket. The application dictated that there could be no lubrication within the system, which contributed to the premature failure of a competitors nuts after only 50,000 cycles. It was also a concern that the existing lead accuracy matching between leadscrews could also be a factor in the excessive wear of the nuts. ABSSAC’s engineers set about utilizing a PTFE impregnated plastic as the antibacklash nut base material and then picked matched pitch accuracy screws in both the right handed and the left handed screws to ensure linear positional accuracy. This winning combination was proven by initial tests cycles which achieved over 56,000 cycles without any detrimental sign of wear to the nuts.
A quick turnaround by Abssac has aided the restoration of two pre WW11 machine tools being restored to their former glory in a local woollen mills maintenance workshop. Despite the customer being without the original dimensional drawings for the ball screws and the fact that they were very much damaged, meant that Abssac had to rely on its extensive ball screw knowledge to satisfy the customer. First a careful measurement of the last remaining ball screw was undertaken. It was found that the ball screw was imperially sized, with a 1.00 inch diameter by 0.250 inch lead, Gothic arch ball screw format. Abssac was able to utilise a cold rolled formed ball screw format, which were cut to a length and then machined at the ends to allow them to fit a thrust bearing to the whole assembly. The traditional square section nuts that were used by the old machines were replaced by adapted standard product range nuts and were chosen specifically for authenticity due to their single ball return design. The whole assembly was then low temperature black Chrome plated, which gave a corrosion resistant and exceptionally smooth and scratch resistant surface finish, hope fully giving the machine at least another 50 years of service. Mr Phil Jones of Abssac says, “It is nice to get involved with these types of project were we are part of a restoration. Abssac has a huge range of linear products, so 9 times out of ten we can help with these more unusual requirements”
ABSSAC LTD E1A Enterprise Centre, Enterprise Way Evesham Worcestershire WR11 1GS