STANDARD CONFIGURATIONS OF CONTINUOUS HINGES
     
HINGE TERMINOLOGY  
   
  Our standard hinge consists of two equal hinge flaps and a central pin.  
     
    1. MATERIAL THICKNESS  
  The thickness of the hinge flap  
     
  2. PIN (bar, shaft, rod, pivot)  
  The hinge pin holds the flaps together and acts as the axis around which the flaps rotate. If is the same length as the hinge (unless a special is required) and the dimension quoted is the pin diameter.
     
  3. HINGE WIDTH (OPEN)  
  The over all dimension of the hinge, measured when flat.  
 
 
  4. HINGE FLAP (leaf or flange)  
  The hinge flap is formed from flat material and gives a fixing surface for the `door or frame`. It is dimensional from the centre of the knuckle to its outer edge and represents half the hinge width.
 
 
  5. HINGE LENGTH  
  The total length of the hinge measured parallel to the pin.  
     
  6. KNUCKLE (joint, curl, loop, barrel, node)  
  The hollow cylindrical part of the hinge through which the hinge pin passes.
  Knuckle diameter = pin diameter + (material thickness x 2 ) + tolerances.
     
  7. KNUCKLE LENGTH  
  The nominal or typical dimension of the knuckle measured parallel to the pin including the longitudinal clearance.
     
  8. KNUCKLE CLEARANCE (paint clearance or gap, siting edge)
  The distance between the outer face of the of the knuckle of one flap and the opposing inner edge of the other flap.
     
  9. LONGITUDINAL CLEARANCE (end play, end float)  
  The working clearance between adjacent knuckles.  
     
  LATERAL CLEARANCE (ACROSS HINGE WIDTH)  
  The variable clearance inherent in the manufacturing process. (side play)
     
  10. KNUCKLE DIAMETER FORMULA (FITTING CLEARANCE)  
  Pin diameter + (material thickness x 2) + manufacturing tolerances.
 
 
  WIDTH CLOSED FORMULA  
  Hinge flap + 1/2 pin diameter + material thickness + manufacturing tolerances.
     
  FIXING SURFACE  
  Hinge flap minus (1/2 pin diameter, material thickness and knuckle clearance).
     
  CLOSED UNINSTALLED  
 
 
  CLOSED INSTALLED  
 
 
  OPEN FLAT 180°  
 
 
  OPEN BACK (BACK ANGLE) typically 270°  
 
 
  11. STANDARD HOLES (fixings, punchings, piercing, drillings)
  Regularly spaced holes in the hinge flaps. The diameter and centres are stated in the relevant product section Data Sheets.
  The dimensions given are the nominal measured hole diameter. When ordering fastenings, to obtain the correct size, adjust for both Cooke Brotjhers and the fasteners suppliers tolerances.
  Hinges can be made to non-listed hole sizes and positions, please see the special hinges section in data sheets.
   
  PLAIN HOLE
 
  COUNTERSUNK HOLE
 
  Countersunk holes are normally used where screw heads must be flush with the top surface of the hinge. Material thickness must be taken into account when designing and specifying to ensure that there is sufficient allowance made in the components to be hinged to accommodate the screw head depth.
 
STANDARD CONFIGURATIONS OF CONTINUOUS HINGES