MacGregor MacRack Electric Drive
MacRack is a patented, fully electric operating system for side-rolling hatch covers. It replaces hydraulic systems with unique, compact units, combining a rack-and-pinion drive and a lifter for side-rolling hatch covers.It is the most environmentally friendly solution for side-rolling hatch covers on the market. MacRack reduces maintenance costs, is highly reliable in extreme environments, eliminates hydraulic oil spills, and delivers weathertight performance to protect your cargo, supported by MacGregor's proven experience in cargo solutions.
Components & Design
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Technical Data
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Common failures & inspection points
Visual inspection for discoloration, cracks, deformation; tactile inspection of elasticity. Damaged sections (minimum 1 m length) must be replaced. Do not apply oil/grease products. Validate with ultrasonic leak detection test.
Surface inspection for corrosion and scratches. Check straightness with steel ruler. Damaged rods must be properly replaced/repaired and realigned (alignment critical for even compression).
Check oil level. Take oil samples and analyze quarterly for contamination. Oil change every 5 years; replace filter annually. Inspect piston rods for corrosion/scratches. For leaks inspect seal rings and cylinder block. Lubricate grease nipples between seal rings.
Inspect drainage channels for blockage (visual, if necessary with wire probe). Test check valves opening/closing manually (ball should move freely, not be hardened). Inspect drainage holes in cargo hold corners. Clean or replace if fouled.
Measure pad height against manufacturer specification. Wear of 4 mm or more destroys rubber seal. Damaged pads must be replaced with original spare parts of same size and material (involve specialists). Check movement between panel and cargo hold edge with pencil test.
Perform ultrasonic tightness test: place ultrasonic generator in closed cargo hold, run sensor receiver outside around all joints. Signal strength shows compression quality. Additionally chalk test: rub compression rods with chalk, imprint shows uneven compression. Hose test in empty cargo holds (0.5 m/s, 12 mm nozzle, 1–1.5 m distance) as validation.
Type-general inspection and maintenance points for this equipment category — not model-specific.
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