Floor Blocks

Floor Blocks

Various types of floor blocks.

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Fixed Combination Floor Blocks

  • Used with individual wire guided, J-Guide, or T-Bar sets.
  • Economical, fixed floor block for use on sets with limited travel.
  • Rope lock (010-533R) and floor block in a single unit.
  • 8" diameter Nylon sheave or ASTM Class 30 grey iron sheave, grooved for 3/4" rope.
  • Sealed precision 17mm ball bearings.
  • Incorporates tie off points for guide wires.
Adjustable Combination Floor Blocks

  • Used with individual wire guided, J-Guide, or T-Bar sets.
  • Rope lock (010-533R) and floor block in a single unit.
  • ASTM Class 30 grey iron sheave, grooved for 3/4" rope.
  • Sealed precision ball bearings.
  • Incorporates tie off points for guide wires.
  • Sheave position may be adjusted to properly tension the hand line.
Sliding Tension Floor Blocks

  • Used with manual fire curtains to provide proper tension in the hand line.
  • 12" diameter ASTM Class 30 grey iron sheave with machined groove for 3/4" or 1" rope.
  • Tapered roller bearings.
  • Sheave "floats" on two 3/4" diameter rods.
Tension Floor Blocks

  • Used as the return pulley for the hand line in J-Guide or T-bar manual counterweight sets.
  • Minimum 40 lb. weight to properly tension the handline.
  • Kick tab permits easy readjustment of the block.
  • ASTM Class 30 grey iron sheave.
  • Sealed precision ball bearings.
  • Steel shoes.
  • Special grooves and shoe sizes available, consult factory.
  • Also known as "Welch" tension blocks, after the J. R. Clancy employee who developed the block in 1925.
Custom Blocks

  • Used with wire guide locking rail. Due to their limited travel, wire guided sets can use this economical fixed floor block.
  • 8" diameter Nylon or ASTM Class 30 grey iron sheave, grooved for 3/4" rope.
  • Sealed precision 17mm ball bearings.
  • 12 gauge side plates fully enclose sheave.
  • Additional spacers are provided for arbor guide wire attachment.
  • Floor block clip package includes mounting hardware for attachment to 011-518 locking rails.

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