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What you’ve got on paper...
Torque limiting clutches with measured and documented adjustment torques
The Mauerstetten company mayr power transmission sets standards not only with reference to the product range and variant diversity of mechanical torque limiting clutches, but also as far as quality assuranceisconcerned . Modern, calibrated installation test stands adjust all clutches accurately to the required torque before delivery. Adjustment and function are checked several times and the measurement data are permanently archived together with the order and serial number of the product. An inspection protocol confirms on paper the delivery condition of each individual clutch.
- The clutch disengagement torque is measured and presented. If it lies out of the permitted limits, the technician corrects the value by manual adjustment of the adjusting nut.
Torque limiting EAS-clutches have been set accurately to the required torque and inspected in the mayr power transmission factory for many years. As part of the company certification according to a the related aim of achieving the best possible quality assurance, all necessary facilities have been installed in order to record the measurement data electronically, to save them permanently and to document them. The entire adjustment, inspection and documentation runs, among other things, via a companydeveloped and built installation test stand.
The technician transfers the relevant data for processing into the test stand. In one particular case, a customer had ordered 7 clutches with the order number . In this way, the system knows that seven synchronous clutches, size 1, with cup spring layering .7 are waiting for adjustment and inspection. If, as in this case, no requirements as to torque adjustment have been stated, the clutch nominal torque will be set to 70 % of the clutch nominal torque. In this way, for example, an adjustment value of 140 Nm can be calculated from a maximum limit torque for overload of 200 Nm.
The first clutch can be adjusted using the torque level values. The torque is directly dependent on the cup spring pretensioning or on the adjustment of the adjusting nut. This dependence is used by the test stand, as it turns the adjusting nut to the position in accordance with the required torque. The adjustment tables required are recorded in the system for all sizes and ypes of adjustable clutches. In operation, the torque can later be altered problem free to other values via the adjusting nut with its graduation scale.