DIRECT DRIVE SAFETY COUPLINGS
Safety Couplings for the direct attachment of toothed belt pulleys, gear wheels, chain wheels, flanges, drums and so on with integrated ball bearing or sliding bearing - for optimal constructional adjustment, frictional shaft-hub-connection with conical clamping bush or conical clamping ring
The safety coupling modular system consists of four standard types namely Friction, Rolling, shear and linear. Several special solutions for nearly every application. Various attachments can be fitted to the basic safety mechanism as required by the application.
For indirect drives, pulley, gear, brake drum or flange connection is available. For direct drives, the safety mechanism is connected to any type of coupling. The most important criteria for selection is the required disengagement torque, torsional stiffness, shaft diameters, assembly conditions, and shaft misalignment.
BALL TYPE
FRICTION TYPE
SHEAR TYPE
Technical Information
Safety couplings are designed for nominal break points or as overload protection in a direct or indirect drive application. The heart of the safety coupling is a highly precise, sturdy disengagement mechanism.
with steel balls as spring loaded positive locking elements. The drive torque is guided into the centrally arranged hub via a frictional, backlash-free lateral clamping hub or conical bush connection. The hub is designed as a ball cage and serves for fitting the flange ring and the shift disk. Special cup springs press the balls over the shift disk into hardened countersunk holes (calotte) of the flange ring. In normal operation, the drive torque is transferred without backlash into the flange ring. For further transfer of the torque and speed, a choice of compensation elements (metal bellows, elastomer spider), a gear or pulley or an appropriate connection flange is fit to the flange ring. If the set disengagement torque is exceeded in the case of crash or collision, the flange ring turns in relation to the cage hub and the balls are abruptly pushed out of the holes. The drive train is cut-off within a few milliseconds.
FRICTION TYPE
INTRODUCTION
The mechanical drive train comprises individual units such as motor, gear unit and driven machine. The coupling connects these component assemblies.
As well as the transmission of rotary motion and torque, other requirements may be made of the coupling.
• Compensation for shaft misalignment with low restorative forces
• Control of characteristic angular vibration frequency and damping
• Interruption or limitation of torque
• Noise insulation, electrical insulation
Couplings are frequently chosen after the machines to be connected have already been selected. Thanks to a large number of different coupling assembly options, specified marginal conditions for clearance and connection geometry can be met from the standard range. The coupling also performs secondary functions, e.g. providing a brake disk or brake drum for operating or blocking brakes, devices to record speed or the attachment of sprockets or pulleys.
Couplings are divided into two main groups, couplings and clutches.
Clutches interrupt or limited the transmissible torque. The engaging and disengaging forces on externally operated clutches are introduced via a mechanically, electrically, hydraulically or pneumatically operating mechanism. Overload, centrifugal or freewheel clutches draw their engaging energy from the transmitted output.
Rigid couplings, designed as clamp, flanged or mechanism couplings, connect machines which must not undergo any
shaft misalignment. Hydrodynamic couplings,
Products are blackodised for protection against rusting, for your specific requirement contact.
Product are produced from alloy steel and toughened to 25 to 35 HRC.
Special Seals are used to achieve required performance.
Product specifications are subject to change due to continuous technical improvement.
All components are processed to achieve desired performance.
Material of Construction
Cylinder - Alloy Steel
Piston - Alloy Steel
Other - Carbon Steel
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