Forged Chains

4B's drop forged chain is made of special heat treated high grade alloy steel, case hardened to Rockwell C57-62 with a ductile core hardness of Rockwell C40.
4B's superior heat treatment technique provides the optimum forged chain link with a more resilient ductile core for shock resistance, and an extremely hard exterior surface for superior wear resistance.

4B forged chain links and pins are also available in all grades of stainless steel.

  • Ultimate Strengths
  • 180Kn (15300kg) to 700Kn (71400kg)
  • Case hardened links and pins. -Precision machined driving face for long life
  • Case hardness: Rockwell C57-C62
  • Core hardness: Rockwell C40
  • Chain pitches available: 102LA, 102NA, 125NA, 142NA, 142LA, 142HA, 150NA, 160NA, 175NA, 200NA, 216NA, 250NA, 260NA
  • Large range of non-stock chain
  • Stainless steel links and pins - available on request
New Sizes
  • Easy and simple assembly on site or in the shop
  • Precise calculated flight bending force
  • Exceptional low noise levels
  • Bolt-on Flight; no welding required
  • Guaranteed, reliable pin attachment
  • Condensed storage and shipping
  • Reduced costs
  • Smooth running
  • Nylon Flights
  • For use with 2-strand chain applications
  • Ultimate Strengths
  • 300Kn (67500 lbs) to 520Kn (117500 lbs)
  • Case hardened links and pins. -Precision machined driving face for long life
  • Case hardness: Rockwell C57-C62
  • Core hardness: Rockwell C40
  • Chain pitches available: 142DNA, 142DHA, 175DNA
  • Suitable for high capacity applications
  • Stainless steel links and pins - available on request
  • For use with 3-strand chain applications
  • Triple configuration for widths up to 3.7m
  • For high capacity applications
  • Ultimate Strengths
  • 300Kn (67500 lbs) to 450Kn (101500 lbs)
  • Case hardened links and pins. -Precision machined driving face for long life
  • Case hardness: Rockwell C57-C62
  • Core hardness: Rockwell C40
  • Chain pitches available: 142TNA, 142THA
  • Stainless steel links and pins - available on request