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BIG-T chains

BIG-T chains

 

The newly developed multi-point contact principle of the Big-T chain allows the effective contact area to be increased by distributing the contact zone uniformly over the entire zone between the two points. Contact pressure, and hence chain wear, is therefore significantly reduced.


The vertical link is also broader and flatter in design. This increase in width creates a much larger wearing surface and provides increased wear resistance, so that the overall wear behaviour of the chain is very much improved.


The flatter design of this chain – which is even flatter than the super-flat chain – makes it suitable for use on extremely compact conveyors (for low-seam applications*), or produces an extremely strong and durable chain for a given pan profile.


» THD - THIELE Heavy Duty (further informations)
Heavy Duty Flat Type Chains according to THIELE standards


The round links have a flattened profile where they engage with the bottom of the chain pockets. This greatly improves the wear behaviour of the chain on the sprocket.


The leg diameter d1 is much smaller than the nominal diameter d – without any loss in chain performance. The benefits include a 15% saving in weight at the round link and a larger volume of material at the critical flight-bar profile, which significantly increases the stiffness and breaking force of the flight bar.


In spite of the broader contact face the smaller d1 value means that the round link is also narrower than that of a standard chain. The chain centre-to-centre spacing therefore remains unaltered, in spite of the larger nominal size.


BIG-T® Chains


Mechanical Properties

Chain-
size
Dia-
meter
PitchPitchFlight
Bar
Space
Thick-
ness
Leg Ø
Roundlink
Inside Width
Roundlink
Outside Width
Roundlink
Inside Width
Flatlink
Outside Width
Flatlink
Wei.
d x t [mm]dt1t2FSe max.e max.b1 min.b2 max.b3 min.b4 max.[kg/m]
  34x121/131    34    ± 0,9    121    ± 1,3    131    ± 1,3    74    40    30,5    ± 0,8    45    109    38    84,1    20,2  
  42x140/152    42    ± 1,1    140    ± 1,5    152    ± 1,5    91    56,1    37,8    ± 1,1    67    148    45,1    99,1    34,1  
  48x144/158    48    ± 1,5    144    ± 1,5    158    ± 1,6    81    55    40    ± 1,1    64    149    54,3    109    38,7  
  52x156/171    52    ± 1,6    156    ± 1,6    171    ± 1,7    87    59    43    ± 1,3    69,5    161    58,3    118    45,5  
  56x168/184    56    ± 1,7    168    ± 1,7    184    ± 1,8    94    64    47    ± 1,5    75    173    62,3    126    52,8  
  60x181/197    60    ± 1,9    181    ± 1,8    197    ± 2,0    100    68    50    ± 1,6    80    185    66,3    135    61,0  
Technical specifications subject to change

Mechanical Properties THD

ChainsizeArticle No.Test ForceElongation
under test
force
Breaking
Force
Elongation
at fracture
Minimum
Deflection
d x t [mm]TECkN% max.kN min.%[mm]
  34x121/131    F15505    1.090    1,4    1.450    11    34  
  42x140/152    F15506    1.660    1,4    2.220    11    42  
  48x144/158    F15501    2.170    1,4    2.900    11    48  
  52x156/171    F15502    2.550    1,4    3.400    11    52  
  56x168/184    F15503    2.960    1,4    3.940    11    56  
  60x181/197    F15504    3.390    1,4    4.520    11    60  
the above values apply to chains in \"natural black\" condition (nsw) / Technical specifications subject to change