Product Range
 
 
 
 

Keyless Shaft Hub Locking Devices & Shrink Discs
 
   
 
   

mecaloc shaft hub locking devices once mounted offer a perfect interference fit, with the case of a slide fit during assembly and disassembly to give a backlash free torque transmission. When the locking screws are tightened, a radial pressure is produced through the taper wedge cross-section of the device to expand into the hub and to shrink on to the shaft to cause a frictional locking between the shaft and the hub.

mecaloc locking devices offer the most advanced solution in the field of locking elements of transmission equipment as it combines the precision of the transmission of synchronous motion with the high power that can be transmitted by a friction coupling.

 
     
 

mecaloc prevents the axial movement of the drive components and will find ideal application to lock timer pulleys, gears, cams, pinions, flywheels, gear boxes, couplings, clutches, brake discs and a whole lot of components in the kinematic chain that have been designed for the transmission of mechanical power.

 
   
  mecaloc Typical Advantages  
 
  • Ease of assembly and disassembly.
  • Backlash free frictional torque transmission.
  • No angular, axial or radial play.
  • High resistance to continuous alternating torsional forces.
  • Optimisation of design.
  • Reduced costs.
 
   
  Installation & Removal of mecaloc  
  Installation:  
 

mecaloc devices come in a ready to install condition. Since torque is transmitted through frictional contact, it is very important that all contact surfaces are clean and installation instructions are observed.

 
 
  • Loosen the screws of mecaloc by 2-3 turns and apply a drop of oil on the screw threads, and the screw head
    bearing surface.
  • Insert mecaloc into the housing of the hub and slide the shaft into the mecaloc
  • Tighten screws uniformly, step by step in a diametrically opposite sequence to the indicated tightening torque TA.
  • Screws adjacent to the slit in the internal ring should be tightened last.
  • Recheck tightening torque on all screws to ensure that the tightening torque TA. is achieved.
 
  Note:  
  Do not use oils containing molybdenum disulphide.
The efficiency of mecaloc is no reduced if keyway exist on the shaft or hub. Such keyways may be ignored.
 
     
  Removal :
 
 
  • Unscrew all screws by a few threads.
  • Remove the screws adjacent to the extraction hole and insert them into the extraction holes until contact.
  • Tighten screws into the extraction holes uniformly, step by step in a diametrically opposite sequence until
    connection is released.
 
   
 

mecaloc 5051 and 5052 have same overall dimensions except that the series 5052 is designed with a larger flange to form a shoulder for the hub. This eliminates any axial movement of the hub during assembly with respect to the shaft and also improves the perpendicularity of the hub.

   
 
   
 
 
 
 
   
     
 

mecaloc 5051 and 5052 have same overall dimensions except that the series 5052 is designed with a larger flange to form a shoulder for the hub. This eliminates any axial movement of the hub during assembly with respect to the shaft and also improves the perpendicularity of the hub.

   
 
   
 
 
 
 
     
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