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8 Inch Crawler

8 inch mainline crawler

Specifically designed for the worst sanitary and storm lines, Cobra Mainline Crawlers are powerful, rugged and dependable.
Features such as a belt drive system and an automatic freewheel clutch make Cobra Mainline Crawlers unique and decisively superior in performance.

Automatic Freewheel Clutch - An electric tooth clutch is connected in parallel to the Crawler motor. When voltage is applied to the motor, the clutch automatically engages. When the voltage is removed from the motor, the clutch automatically opens. Other crawlers use mechanical clutches which require the user to drive the crawler into a freewheel condition.

Features

  • Forward/Reverse/Automatic Freewheel on all Cobra crawlers
  • Single connector at rear of crawler. Swivel connector reduces wear and damage to pigtail - a major source of problems
  • Utilizes chain versus cables to connect to video cable
  • 8 Inch Crawler with gantry and additional lightingIndustry compatible. Cobra Crawlers can be installed on any multiconductor system with an appropriate adaptor cable
  • No manhole entry required. Special lowering/retrieval harness provided
  • Quick and simple lift wheel change for different pipe size inspection
  • Pan &Tilt Camera replaces Straight-Line Camera in minutes
  • Powerful 0.2HP gear motor with cut steel gear planetary reduction Gearhead. High strength spiral bevel gears
  • Belt drive provides 4 wheel drive
  • Long-lasting maintenance-free drive belts
  • User can carry out all normal maintenance such as replacement of sealed bearings and drive gears
  • Powerful, yet compact enough to handle all Contractor needs

Detailed Specifications

CRAWLER ASSEMBLY 8"-24"

  • 1 Crawler Camera Assembly 8" Multi-Conductor to include:
    • 1 Hi-torque Planetary Gear Motor with Forward/Reverse and Freewheel Drive with full control of crawler speed.
    • 1 Automatic freewheel clutch
    • 1 Planetary Gear head with cut steel gears
    • 1 120 VDC 4 Brush Servo Motor with 24 Bar commutator
    • 1 2.6" diameter Locking Electric Clutch with 20 Degree teeth
    • 1 Lowering and Recovery Harness
    • 1 Set 10", 12", 15"Lift Wheels with ¼ x 20 Bolts
      • 8 inch mainline crawler in pipe
    • 1 Set Balloon Wheels for 18" and larger pipe inspection
    • 1 90 Degree Stainless Steel Swivel with single 8 pin connection and towing bars on each side of swivel
    • 1 Set 3/16" adjustable tow chains
    • 2 Set Drive Belts ¾" solid Polyurethane (1 Spare)
    • 1 SS Adaptor Plate with O ring Seal to accept 3" diameter camera with 5 pin MS connector
    • 1 Crawler housing Weldment with side plates, mild steel, electrolysis nickel plated with accessories work bar
    • 1 Rear enclosure with O ring Seal designed to accept Stainless Steel swivel connector