Series 40 loft blocks are designed to mount on top of grid or other support structure. Each rigid steel housing contains a single-groove sheave rotating on sealed precision ball bearings. Each base angle is punched with a series of holes to accommodate a wide variety of loft well configurations. … [Read more...] about Series 40 Upright Loft Blocks
Series 50 Upright Head Block
Series 50 head blocks are designed to mount on top of head beams or other support structure. Each rigid steel housing contains a multi-groove sheave with a standardized quantity of cable grooves and one purchase line groove. Sheaves are available in cast iron and MD Nylon. Each base angle is … [Read more...] about Series 50 Upright Head Block
Double Purchase Head Blocks
Double purchase head blocks are used when an obstruction or other limitation restricts the travel of a single purchase arbor. Used in conjunction with a double purchase arbor, this style of rigging enables the batten to travel two feet for each foot of arbor travel. A standard Series 50, 51, or 55 … [Read more...] about Double Purchase Head Blocks
Series 70 Tension Block
Used in tee or jay bar mounting. The heavy steel housing is designed to provide automatic tension on the purchase line. Guides may be mounted to provide either a self locking or free-floating operation. … [Read more...] about Series 70 Tension Block
Series 73 Wire Guide Floor Block
Floor block assembly is designed for use with #579 Wire Guide Locking Rail. Housing has tie-offs for use with wire guide arbors. No provision is provided for adjustment of purchase line. … [Read more...] about Series 73 Wire Guide Floor Block
Series 74 Sliding Tension Block
Used most often with fire curtains, act curtains, and paint frames. Designed to provide automatic tension on the purchase line. Self-locking feature prevents upward travel of sheave housing unless manually released. … [Read more...] about Series 74 Sliding Tension Block
Series 81 / Series 83 Mule Blocks
This style of mule block attaches to the bottom flange of the roof support struction. Each rigid sheave housing contains a single or multi-groove sheave with a standardized quantity of cable grooves. Heavy offset clips and bolts are supplied for attachment. Beam flange width and thickness must be … [Read more...] about Series 81 / Series 83 Mule Blocks
Series 991 Tee Guide Arbors
Series 991 counterweight arbors are designed to be captured and guided between tee or jay bar. They are avaiable in one foot increments from 4 to 12 feet. Each Series 991 counterweight arbor is fabricated from heavy steel shapes to provide a sturdy frame in which to lead counterweights. Arbor … [Read more...] about Series 991 Tee Guide Arbors
Model 991RG Ball Bearing Roller Guide
Special ball bearing Nylatron GS guide wheels enable the arbor to roll instead of slide along guide tracks. This guide assembly provides the ultimate in ease in operation for a rigid guide system. Guide assemblies are adjustable for spacings of 6" or 8" centers. These guides may also be retrofitted … [Read more...] about Model 991RG Ball Bearing Roller Guide
Series 991G – Arbor Guide Shoe
Arbor guide shoes are constructed of high density polyethylene guides with full width 1/4" thick steel backing plates to capture the counterweight arbor. These guides enable the arbor to glide freely along steel tee or aluminum jay bar guides. The guide material"™s unique characteristics provide … [Read more...] about Series 991G – Arbor Guide Shoe