Main Data

• Description: Ship lift wormrack
• GEARX No.: CWR133-490Q
• Minimum thickness of screw: 133 mm
• Minimum space width of screw: 244 mm
• Depth of screw: 100 mm
• Screw pitch: 450 mm
• No. of threads: 11
• Material: G35CrNiMo6-6+QTI DIN EN 10293
• Heat treatment: Through quenching and tempering
• Hardness: HB250±20
• Length: 4,930 mm
• Width: 1,980 mm
• Height: 553 mm
• Thread surface finish: Thread milling by gantry miller
• Accuracy grade:
  • Tolerance for thread pitch: ±0.1 mm
  • Tolerance for thread helix angle: ±0.05° 
• Weight of worm-rack blank: 44,000 kg
• Weight of worm-rack: 24,000 kg

Application

• Vertical ship lift system

The Main Fabrication Procedure

• Upon request

Technical Documents

• Inspection certificate of material
• Heat treatment certificate
• Certificate of ultrasonic inspection
• Magnetic particle detection certificate(on thread flank)
• Size tolerance and geometric tolerance report
• Inspection report of thread quality

Relative Standards

• Upon request