Introduction

xtreme pressure chains

Xtreme ChainExcessive internal friction caused by temporary extreme loading and made worse by inadequate lubrication results in turned pins. It is important to note that extreme loads on a brand new chain result in turned pins even on its very first movement. The likelihood of turned pins occurring increases when internal chain bearing pressure exceeds 0.18 kN/mm²; this would be 14% to 15% of a chain tensile strength (UTS). Some machinery stands allow operating loads of up to 20% UTS, which increases the risk of turned pins even without working in demanding environments.

Xtreme Chain

Xtreme pressure chains are dimensionally similar to the chain in the international standard. However, the pin length is longer than the ISO standard equivalent, and the running width and distance between flanges may require checking and adjustment. If the chain anchors have been made to international standards, the chain terminations should require no alteration.

The chain has a tensile strength in excess of the international standard as these chains are made up of slip fit links, and there is a reduction fatigue load when compared to standard construction leaf chain.

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  Inter-changeable Pitch P MM Pin Diameter A MM Plate Thickness B MM Plate Depth C MM Pin Length D MM Washer Thickness Weight KG/Metre Breaking Strength kN
BL644XP BL644-LH1244 19.05 7.94 3.30 18 33.7 2 3 127.5
BL645XP BL666-LH1266 19.05 7.94 3.30 18 47.3 2 4.5 191.2
BL646XP BL688-LH1288 19.05 7.94 3.30 18 60.9 2 6 255
BL844XP BL844-LH1644 25.4 9.53 4.09 24.1 41.2 2 5 206
BL846XP BL846-LH1646 25.4 9.53 4.09 24.1 49.7 2 6.2 206
BL866XP BL866-LH1666 25.4 9.53 4.09 24.1 58 2 7.3 309
BL888XP BL888-LH1688 25.4 9.53 4.09 24.1 74.4 2 9.5 412
WL1644XP LL3244 50.08 17.81 6 43.00 60.20 3.10 13.50 530
WL1666XP LL3266 50.08 17.81 6 43.00 87.20 3.10 20.00 800
WL1688XP LL3288 50.08 17.81 6 43.00 111.20 3.10 26.50 1050
WL2066XP LL4066 63.5 22.89 8 73.03 112.20 3.10 30.00 1270
WL2088XP LL4088 63.5 22.89 8 73.03 146.00 3.10 38.80 1690
Download a Guide to Leaf Chain Inspection

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