We repair motors, generators and gearboxes of all makes and sizes up to a unit weight of 12.5 tons. New rewinds up to size 355 are carried out at our Stockerau plant, larger tonnages and motor sizes at our partner companies in neighboring EU countries. You can reach us 24 hours a day from Austria via our service hotline!
MOLL-MOTOR has developed as a direct successor to Norbert MOLL’s repair workshop, which he founded in 1948. The repair of electric motors has therefore been a tradition with us for generations. However, it is not only the company itself that has decades of experience, but also the individual employees. Five colleagues from the repair department have been with the company for more than 20 years, one of them for more than 33 years! We are delighted to have such loyal employees and that they pass on their experience to our mechatronics apprentices, who we train on an ongoing basis. In total, over 90 employees at MOLL-MOTOR work tirelessly for our customers, and we are available 24 hours a day, 7 days a week via our service hotline.
Repair of electric motors
If an electric motor is no longer functional, the most common cause is a defective winding. In our factory, the motor is inspected and the customer is recommended to purchase a new replacement motor, if it is an IEC standard motor. These mass-produced motors are much cheaper than a hand-made new winding. However, for built-in and special motors with mechanical dimensions that deviate from the standard – including shaft end, shaft height, installation dimensions and design – or deviating winding data – including insulation class, voltage, frequency or high number of poles – repair is still the best solution. The service life is at least the same as that of new motors, the repair is comprehensive and the routine testing is carried out in accordance with the regulations for new motors.
Over the past decades, MOLL-MOTOR has already gained experience with countless special motors, which benefits our customers.
We also take care of functional electric motors on behalf of our customers. The most common reason for repair is bearing wear. Damaged bearings generate running noises and undesirable frictional heat, but with the necessary experience they can be replaced quickly.
In any case, we advise our customers and recommend the quickest and most cost-effective solution. Our stock of new motors leaves nothing to be desired, and bearing motors can be adapted to customer specifications at any time.
Repair of SIEMENS servo motors and SIMOTIC main spindle motors
MOLL-MOTOR is the only SIEMENS-certified and audited repair facility for SIEMENS servo motors in Austria. Servo motors differ from conventional electric motors in that the angular position of the motor shaft, rotational speed and acceleration can be controlled. For this purpose, they are equipped with a rotary encoder with which the position can be continuously determined. In this way, particularly precise machine sequences can be controlled. Due to the high level of precision required, they must be serviced regularly, whereby they are put through their paces on our test bench; simulated load operation is also possible. Depending on the condition, either the encoder is readjusted or components such as the encoder, bearing, brake or connector are replaced.
We can do all of this within just 3 to 8 days, and a quick repair is possible within a few hours, as we always have a large stock of spare parts available. As an authorized partner of SIEMENS, we also have online access to all the necessary data and documents from production and our employees regularly take part in training courses at the SIEMENS headquarters. Every two years, a competence check is carried out by SIEMENS in our company. During this audit, the quality management system, organization and processes, quality and occupational safety as well as infrastructure and competence are reviewed.
MOLL-MOTOR is also a TÜV-certified company in accordance with ISO EN 9001.
Repair of gearboxes
Gearboxes from all well-known manufacturers are repaired in our workshop. Here too, MOLL-MOTOR offers customers the best conditions thanks to its wealth of experience, good access to spare parts and the machinery in Stockerau. You can even entrust us with gearboxes weighing up to 12.5 tons.
Repair of pumps & co
A few decades ago, most machine manufacturers had their own repair department. But in the course of rationalization, these were often cut back. In the worst cases, customers are forced to throw away repairable products and replace them. More responsible manufacturers usually look for a partner like MOLL-MOTOR to carry out contract repairs. For example, we have a contract with the company Xylem (formerly Vogel Pumpen) for the repair of pumps, which we carry out at our site in Stockerau. For customers of Herborner Pumpenfabrik, our customer service is preferably active in swimming pool technology – also on site, with original spare parts – in order to avoid longer closure times.
Even products from manufacturers with whom we have no contractual relationship can usually be repaired. Original spare parts can be procured and many faults can be rectified independently of spare parts.
Fault diagnosis
Occasionally, defective gearboxes, motors or geared motors are replaced by the customer with a new product, but the customer still wants to make use of our expertise to determine the cause of the fault and, for example, to protect the system against the same fault in the future. To do this, we can dismantle the damaged drive and examine the individual parts for traces. The fault pattern usually provides clear indications as to whether damage was caused by short or long-term overloading, axial or radial forces, etc.
Diagnosis is not only possible retrospectively, but also on an ongoing basis. MOLL-MOTOR works with SIEMENS SIMOTICS CONNECT 400 diagnostic boxes, which collect motor data and transmit it to a server via WLAN. This allows either the maintenance technician himself or MOLL-MOTOR on behalf of the operator to analyze the data and receive alarms in the event of significant deviations.
