3S Industrial Manual Lever Blocks


The heavy duty lever blocks are a versatile lifting and tensioning device widely used in rigging, construction, and mining. The 3S industrual chain lever block mechanism and gears are enclosed in a robust all-steel compact shell. The load chain is made of high resistance Grade 80 alloy steel that has a black finish, is heat treated, and is calibrated and marked according to ISO 3077 and ISO 1834. 'ID' plates and rivets are supplied in stainless steel (a non-conductive material) in order to avoid dangerous sparking, making them ideal for underground mining.

3S Industrial Manual Lever Blocks

250kg & 500kg 3S Lever Blocks are designed for small to medium size lifting and pulling applications.
The design combines strength and compact design into one, to provide a high quality and versatile Lever Block.

  • Load chain made from high resistance, Grade 80 zinc plated finish, calibrated and marked according to international standards ISO 3077 and ISO 1834.
  • The short arm lever and the gears ration allows minimum effort to raise maximum load with maximum security
  • Top and bottom hook are complete with cast latches
  • Top and bottom hooks are fitted with ball bearings to allow rotation under load
  • Compact design to allow minimum headroom
  • 3S lever blocks are operationally tested to its rated capacity and its supplied with a test certificate, relating to its stamped identification side plate
  • Repair and testing facilities are to NATA specification
  • Manufactured to AS 1418.2 and exceeds standards
  • Gunmetal Grey
  • High quality aluminium housing
  • Easy handling with low physicalforce on lever
  • Fully protected mechanism for low maintenance cost
  • Easy adjustment by free chaining mode
  • Grade 80 zinc plated alloy load chain
  • Bearing top and bottom hook
  • Load drop protection in free-wheel position
  • Comprehensive spare parts range and technical support


 Product CodeRated CapacityColour CodeStandard LiftTest LoadEffort on Lever to lift Full LoadNo. Load Chain FailsLoad Chain Diameter
506025 0.25t Grey 1.5m 4.9kN 210N 1 4mm
506050 0.5t Grey 1.5m 9.8kN 320N 1 4mm
506080 0.8t White 1.5m 11.3kN 140N 1 6mm x 16mm
506160 1.6t Violet 1.5m 22.5kN 240N 1 8mm x 24mm
506320 3.2t Yellow  1.5m 45kN 320N 1 10mm x 30mm
506630 6.3t Brown 1.5m 1.5kN 340N 2 10mm x 30mm
506900 9t Orange 1.5m 135kN 360N 3 10mm x 30mm

Every 3S industrial level block is operationally tested to its rated capacity and is supplied wtih a test certificate, relating to its stamped identification side plate. This lever block comlpies to AS 1418.2 and approved Colour Coded to Match International Lifting Standard.

 Product CodeRated CapacityABCDEHNet Weight
506025 0.25t 87mm 55.5mm 68mm 145mm 21mm 200mm 1.5kg
506050 0.5t 100.5mm 62.5mm 81mm 160mm 24.5mm 250mm 2.5kg
506080 0.8t 148mm 90mm 136mm 280mm 30mm 325mm 7kg
506160 1.6t 172mm 98mm 160mm 410mm 35mm 380mm 11kg
506320 3.2t 200mm 115mm 180mm 410mm 40mm 480mm 21kg
506630 6.3t 200mm 115mm 235mm 410mm 50mm 620mm 31kg
506900 9t 200mm 115mm 316mm 410mm 60mm 700mm 47kg

506025 and 506050 Diagram

506025 50Dia

506080, 506160 and 506320 Diagram

506080 160 320Dia

506630 Diagram


506900 Diagram


We are Adelaide based and deliver Australia Wide


Brisbane - Sydney - Canberra - Melbourne - Hobart - Adelaide - Perth - Darwin - Regional Areas

Active Lifting is Quality Assured to ISO 9001 International Standards

Active Lifting Equipment