The motor range from Beckhoff drive technology is rounded off by the AL2400 and AL2800 ranges of 3-phase Linear Servomotors. Linear motors are integrated directly into the machine design and coupled with the load without coupling and transfer elements required for rotary motors. This results in optimum space utilization, and the absence of transfer elements ensures play-free power transmission. Linear motors can be used wherever the rotary design reaches mechanical installation limits, or where special drive characteristics in terms of dynamics, synchronism or acceleration are required. Particularly with shortstroke movements in rapid succession with high speed, conventional rotary systems can lead to premature wear of mechanical components. In these applications, linear motor technology can offer significant benefits. The primary motor sections contain the coils and the iron core and are ideally suited for use in aggressive environments. The secondary sections contain the permanent magnets required for generating force. A stainless cover protects the magnet material from mechanical damage and oxidation. Through their compact design, the AL series linear motors with iron core provide high power density and maximum dynamics.

"These two linear motor ranges close the gap that existed between the smaller and larger power range. Through the use of optimized magnet material, the motors have led to significant customer growth in areas such as glass processing, timber machinery, window production machines and other applications with harsh operating conditions."

The permanent magnets located on the secondary sections create an attractive force for the iron core located on the primary section. The linear guide has to be able to withstand this force. In the linear motors of the AL series, the attractive force is minimized by reducing the number of magnets used, without any loss in force. Additional beveling of the magnets reduces cogging.

The aim during the development of all three motor designs was dynamic operation without water cooling – which is needed for other linear motors with similar performance data - because this requires significant additional effort and expense in most cases. For this reason, the motors were designed with minimum heat transfer resistance.

All three motor series have the same pole spacing. This has the advantage that the procedure for adjusting the drive amplifiers and the adaptation to a linear encoder or the MES system is always the same, which saves time during commissioning. In principle, it is possible to operate several primary sections on one magnetic track. This significantly reduces the installation and component costs and opens up application options that would not normally be considered for linear motors.

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