Chain Pulley Blocks

Chain Pulley Blocks


Chain Pulley Blocks, GR 80 have steel forged hooks, which are confirming to IS-8610 and fitted in upper arm bottom block made out of heavy duty S.G. iron / malleable casting. The grade 80, IS-6216 alloy steel chains uniformly electrically welded from alloy-steel duly heat treated for ductility, toughness & wear resistance accurately calibrated for smooth running in wheels. The gears are made from nickel-chrome, alloy steel, case hardened, gears are accurately machined and teeth generated on hobbing machine to corrected involutes for high bending stress and low wear.

Model No. 10 SF 20 DF 30 DF 50 DF 75 TF 100 QF
Capacity in Kgs 1000 2000 3000 5000 7500 10000
No. of falls 1 2 2 2 3 4
Chain Velocity Ratio 52 104 144 144 216 288
Effort at full load Kgs 26 28 30 49 53 57
Load chain size mm 8 8 9 10 10/12 10/12
Wt. Of standard block in Kgs 22 32 58 75 120 160
Add. Wt. Per meter lift in Kgs 3.0 4.5 6.5 8.0 11.5 15.0
Head room reqd. (mm) 460 550 690 775 928 1020

  • Load chain wheels are of S.G. iron/malleable casting with accurate chain sprockets for smooth running.
  • Load wheel is mounted on two ball bearings for smooth operation
  • Hand chain wheel is manufactured from graded casting as per IS-210
  • Screw and friction type self actuating load pressure brake ensures safety at all positions
  • Rigid frame built from steel plates

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