KROMER Spring Balancers, available from Millsom Materials Handling , have lifting capacities ranging from 9kg to 300kg. These balancers are distinguished by their conical cable drum which ensures that the retraction force remains constant, regardless of the cable travel. As a result, the position is retained after the attached tool has been used. Spring Balancers permit fatigue-free working over prolonged periods of time.
Most versions of both the retractors and balancers are available with an automatic Arresting Mechanism. This mechanism stops the retraction process in any required position, provided the tool is retracted slowly. If the tool retracts rapidly, the arresting mechanism does not operate. This feature is useful when there is a need to prevent the tool from returning to its original starting position.