JR Clancy Tension Floor Blocks

• Used as the return pulley for the hand line in J-Guide or T-Bar manual counterweight sets.
• Minimum 40 lbs. (18.1 kg) weight to properly tension the handline.
• Kick tab permits easy readjustment of the block.
• ASTM Class 30 grey iron sheave.
• Sealed precision 17 mm 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.