Drop forged conveyor chain is sometimes referred to as en-masse conveyor chain or scraper chain. Drop forged chain is commonly fitted with special attachments that are either welded directly onto the drop forged links or alternatively bolted onto lugs that have been welded to the drop forged links. FB drop forged conveyor chains are made from specially selected high grade alloy steels. The plates are through hardened to give them their basic strength as well as make them resistant to excessive wear. The pins are case hardened, which not only makes them extremely resistant to wear, but also maintains their flexible core which results in much improved resistance to shock loading. FB drop forged chains have three main styles; standard, double and triple link.

Standard drop forged conveyor chain links

Standard drop forged conveyor link plate Drop forged chain link

Chain Link 102NA 125NA 142NA 142HA 150NA 160NA 175NA 200NA 216NA 250NA 260NA
Minimum Breaking Load 180 kN 200 kN 300 kN 450 kN 300 kN 350 kN 520 kN 600 kN 600 kN 700 kN 700 kN
  40,400 lb 44,900 lb 67,500 lb 101,000 lb 67,500 lb 78,700 lb 117,500 lb 135,000 lb 135,000 lb 158,000 lb 158,000 lb
Case Hardness Rockwell C57-C62 Rockwell C57-C62 Rockwell C57-C62 Rockwell C57-C62 Rockwell C57-C62 Rockwell C57-C62 Rockwell C57-C62 Rockwell C57-C62 Rockwell C57-C62 Rockwell C57-C62 Rockwell C57-C62
Case Depth 0.5 mm 0.6 mm 0.7 mm 0.7 mm 0.7 mm 0.8 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm
Core Hardness Rockwell C40 Rockwell C40 Rockwell C40 Rockwell C40 Rockwell C40 Rockwell C40 Rockwell C40 Rockwell C40 Rockwell C40 Rockwell C40 Rockwell C40
Weight (Per Link) 0.38 kg 0.70 kg 1.08 kg 1.76 kg 1.20 kg 1.30 kg 2.73 kg 2.85 kg 3.66 kg 4.26 kg 5.38 kg
Dimensions 102NA 125NA 142NA 142HA 150NA 160NA 175NA 200NA 216NA 250NA 260NA
P 102 mm 125 mm 142 mm 142 mm 150 mm 160 mm 175 mm 200 mm 216 mm 250mm 260 mm
H 36 mm 35 mm 50 mm 50 mm 49 mm 44.5 mm 60 mm 60 mm 75 mm 75 mm 75 mm
T 7 mm 10 mm 12 mm 16.5 13 mm 13 mm 16 mm 18 mm 19 mm 18 mm 21 mm
W 28 mm 36 mm 42 mm 62 mm 36 mm 42 mm 72 mm 68 mm 59 mm 70 mm 71 mm
M 12 mm 15 mm 18.7 mm 28.5 mm 15 mm 19.5 mm 22 mm 30 mm 26 mm 32 mm 31 mm
D 14 mm 16 mm 25 mm 25 mm 25 mm 20 mm 30 mm 30 mm 35 mm 32 mm 32 mm

Double and triple drop forged conveyor chain links

Triple drop forged conveyor link plateDrop forged chain link with 2 lugs Drop forged chain link one lug

Chain Link 142DNA 142DHA 142TNA 142THA 175DNA
Minimum
Breaking Load
300 kN 450 kN 300 kN 450 kN 520 kN
  67,500 lb 101,000 lb 67,500 lb 101,500 lb 117,500 lb
Case Hardness Rockwell C57-C62 Rockwell C57-C62 Rockwell C57-C62 Rockwell C57-C62 Rockwell C57-C62
Case Depth 0.7 mm 0.7 mm 0.7 mm 0.7 mm 1.0 mm
Core Hardness Rockwell C40 Rockwell C40 Rockwell C40 Rockwell C40 Rockwell C40
Weight (Per Link) 1.37 kg 2.00 kg 1.67 kg 2.32 kg 3.17 kg
P 142 mm 142 mm 142 mm 142 mm 175 mm
H 50 mm 50 mm 50 mm 49 mm 60 mm
T 12 mm 16 mm 12 mm 16 mm 16 mm
W 42 mm 62 mm 42 mm 62 mm 72 mm
M 18.7 mm 28 mm 18.7 mm 28.5 mm 22 mm
D 25 mm 25 mm 25 mm 25 mm 30 mm
F 67 mm 87 mm 92 mm 112 mm 96 mm
E 13 mm 13 mm 13 mm 13 mm 17 mm
B 8.5 mm 8.5 mm 8.5 mm 8.5 mm 10.5 mm