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9 ft

At iStudio Projects, our iSP Side-Loading Rod Arbor 9 ft is the largest and highest-capacity arbor in the iSP rod arbor series, purpose-built for full-scale professional counterweight fly systems requiring maximum counterweight capacity. Capable of accommodating up to 53 standard 5″×1 7/8″ bricks (1,961 lbs) or up to 88 thinner 5″×1 1/8″ bricks (1,848 lbs), the RA9 is the workhorse solution for heavily loaded battens carrying full-length drops, pipe grid assemblies, or substantial scenic elements.

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Product Description

  • Model #: ISP.RA9
  • Dim A (Travel Height): 9′-0″
  • Dim B (Overall Height): 9′-8″
  • Arbor Weight: 100 lbs
  • Rod Diameter: 3/4″
  • Arbor Width: 10″
  • Spreader Plates: Required every 2 ft (approx. 4–5 plates along full height)
  • 5″ x 1 7/8″ Bricks: Max 53 qty / 1,961 lbs
  • 5″ x 1 1/8″ Bricks: Max 88 qty / 1,848 lbs
  • Side-loading rod design for efficient counterweight brick access at the loading rail across the full 9 ft rod height
  • Multiple spreader plates at every 2 ft ensure rod alignment and structural rigidity under near-2,000 lb counterweight loads
  • Highest brick capacity in the iSP rod arbor series — accommodates both standard 5″×1 7/8″ and slim 5″×1 1/8″ brick formats
  • Fabrication date stamped on each unit for full lifecycle and inspection traceability
  • Warning labels and ANSI E1.47 compliance markings affixed to each unit
  • Load Limit: Do not exceed maximum capacity — 53 qty / 1,961 lbs (5″×1 7/8″) or 88 qty / 1,848 lbs (5″×1 1/8″); overloading creates a critical out-of-balance condition
  • Brick Loading: Load and unload counterweight bricks only at the designated loading rail with the arbor at the correct loading position; the 9 ft arbor height requires careful sequential loading to maintain balance throughout the process
  • Spreader Plates: Inspect and confirm all spreader plates are properly seated and secure before each use; with the full rod height of 9 ft, missing or loose spreader plates present a significant structural risk under full counterweight load
  • Rope Condition: Do not operate with twisted, kinked, or damaged operating line; at high counterweight loads, rope failure presents a severe safety hazard
  • Equipment Condition: Do not operate damaged, malfunctioning, or field-modified equipment
  • Clearance: The full 9 ft travel arbor requires an extended clear zone; keep all personnel clear of the arbor travel path, rope paths, and all pinch points during operation
  • Annual Inspection: Required per ANSI E1.47; given the high load capacity of the RA9, inspection rigor is especially critical — document fabrication date, inspection date, and inspector per unit
  • Brick Compatibility: Do not mix 5″×1 7/8″ and 5″×1 1/8″ bricks in the same arbor without careful recalculation of total counterweight and balance against the loaded batten

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