Accelerated Polishing Machine

Product Description

The Cooper Wessex Accelerated Polishing Machine CRT-APM is the industry standard device for the determination of the Polished St Wessex Engineering first manufactured an Accelerated Polishing Machine, CRT-APM over *0 years ago, and were involved both in the development of the machine and the test procedures. Wessex has sold more than ***0 APMs globally. In ***0 increased traffic flow and higher speeds, together with concerns about road safety led to research into the relationship between road materials and skid-resistance. Research at the UK Transport Road Research Laboratory showed a significant relationship between polishing of aggregates used in road surfaces and skid resistance. Tests were devised using an Accelerated Polishing Machine and a friction measuring device(known as the Pendulum, also supplied by Cooper-Wessex), to determine a Polished Stone Value(PSV). As the best quality market leaders Cooper-Wessex have recently been copied by low quality manufacturers. Imitators machines may look similar, but precision, repeatability and reproducibility come only with years of experience. Key Features * High ground steel main spindle running in precision sealed ball bearings additionally protected by a labyrinth seal spindle axially loaded to eliminate end play. * Adjustable 3 phase motor speed control with adjustable timing belt drive, reducing power consumption and improves control. * Inverter drive to motor for precise speed control * Digital display preset timer and revolution counter. * Robust welded steel mainframe, standing on adjustable pads * Specimens manufactured and easily removed from precision machined moulds. * *4 Specimens located on 'Road Wheel' by rubber rings and held by simple side fixing. * Tyred wheel easily removed for replacing tyres. * Water gravity fed from high level tank through calibrated flow meter. * Used abrasive and water collected in easily removable tray. * Loaded tyre raised and lowered to the running surface by mechanical lifting device. * Protection by covers and guards may be easily removed for maintenance. * CE marked. * ASTM option with pneumatic wheel. Key Uses * To produce polished stone samples of aggregates used in road surfaces, to simulate actual road conditions. Standards * EN *****8:***0 (formerly BS**2 pt**4: ***9) * ASTM E*****3 * ASTM D******1