Overview and Technology

Impregnation Machines

Bartec Dispensing Technology acquired Mazzali Systems who has been a pioneer in the impregnation equipment industry for over 30-years. Currently Bartec offers high quality impregnation machines that range from small production scale machines to high volume impregnating systems covering Trickling impregnation, Roll dip impregnation, hot dipping impregnation and vacuum impregnation.


Vacuum Potting

Trickling Impregnating

Roll Dip Impregnating

Hot Dip Impregnating

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Roll dip video


Roll dip impregnation application
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What are the benefits of Impregnating rotors, stators and other parts?

With impregnation or resins and varnishes you can close and seal the cavities and voids between the winding of the wires in order to achieve a better electrical insulation and minimize vibrations by fixing the wires around the windings. Also increase thermal conductivity and improve the protection against the elements and finally to create a bonding effect on the lamination.

A quality impregnation process must achieve:
  • Full penetration of resin or varnish into existing gaps
  • Absence of bubbles in the resin-winding mass
  • Creating a bonding effect on the lamination
  • Absence of resin residuals on shafts and laminations.
Over the last 30 years we have designed and built impregnation machines to trickle, roll dip or hot dip resins and varnishes for Industrial motors, traction motors, submersible pumps, high end brushless motors, elevator motors, power tool motors in addition to other applications.

The design of our impregnation machines include ENERGY optimisation by implementing a heat recovering system in the oven exhaust. This energy can be reused for heating purposes in the factory, GREAT YIELD OF RESIN (high dry residual on parts) No waste of resins, resin is temperature controlled, filtered and reused in the system. EXCELLENT SYSTEM EFFICIENCY: Programmable auto start, which can be programmed efficiently based on the production shift and auto shut down at the end of the shift, automatic flushing of pumps and drippers, automatic lubrication of the system, centralized collection of washed lubricant, automatic diagnostics for tracing failures, collection of flushing solvent into the same container located in the trickling area for an easy drainage, low thermal dissipation due to high quality insulation material, all exterior oven walls are only 10 - 15°C higher than ambient temperature, On-line feedback to monitor the correct mix ratio and flow rate on 2-component resins. The Impregnation System will stop if the mix ratio or flow rate is out of specification.