The Roller 45 Drum Wheel is a load-bearing mechanical drum component used in roller (shutter-type) garage doors.

It is mounted on the door shaft and functions as the primary winding element that:

• Supports the door curtain

• Guides the rolling action

• Transfers lifting force from the operator to the door

 The “45” typically refers to:

• Drum diameter / profile size

• Or compatibility with specific shaft sizes / door systems

Core specifications

Mechanical dimensions

• Wheel diameter: 45 mm
• Shaft (axle) diameter: ~10.8 mm – 11 mm
• Shaft length (typical):
  • ~109 mm (short)
  • ~165 mm (long)

Construction

• Wheel material: Nylon (engineering plastic)
• Bearing type:
  • Multi-ball bearing (typically 11–13 bearings)
• Bearing design: Sealed (dust-resistant)

Performance

• Load rating: ~34–35 kg per wheel
• Cycle life:
  • ~15,000 – 20,000 cycles (open + close)
• Operation:
  • Low-friction rolling
  • No lubrication required

Compatibility

• Track size:
  • Standard 2-inch residential roller door track
• Application:
  • Roll-up / roller garage doors
  • Drum/curtain guide systems

Functional characteristics

• Transfers door weight to track via rolling motion
• Maintains alignment of curtain/drum assembly
• Reduces:
  • Friction
  • Noise
  • Wear on track and door

Key spec summary

•  Diameter: 45 mm
•  Shaft: ~10.8–11 mm
•  Material: Nylon
•  Bearings: 11–13 ball bearing (sealed)
•  Load: ~35 kg per wheel
•  Life: 15k–20k cycles
•  Track: Standard 2” garage door track
•  Maintenance: Lubrication-free