The Marantec STAI 1-8-45 Rail Drive is a high-performance industrial rail-mounted door operator designed for sectional doors. It provides smooth, precise movement and is ideal for applications where shaft-mounted drives are not suitable.

General

• Type: Rail-guided sectional door operator (overhead track drive)
• Model: STAI 1-8-45
• Application: Spring-balanced sectional doors
• Mounting: Rail-mounted (overhead guide system)
• Control: External control system (e.g. CS 320 / CS series)

Electrical specifications

• Supply voltage: 230 V / 400 V AC, 3-phase
• Frequency: 50 Hz (50/60 Hz variants)
• Motor power: 0.55 kW
• Control voltage: 24 V DC
• Rated current:
  • ~1.9 A (star)
  • ~3.3 A (delta)
• Fuse protection: 16 A

Mechanical specifications

• Output torque: 80 Nm
• Holding torque: 600 Nm
• Output speed: 45 rpm
• Running speed: ~15 cm/s
• Gear system: Worm gear (double-bearing worm shaft)
• Shaft support: 25.4 mm

Door capability

• Max door area: 30 m²
• Max door height: up to 4.5 m

Performance

• Cycles per hour: up to 15 (25 for HD variants)
• Max output revolutions: 40
• Noise level: ≤70 dB(A)
• Operating temperature: −20 °C to +60 °C

Protection & construction

• Protection class: IP54 (IP65 variants available)
• Housing: Die-cast aluminium
• Thermal protection: Motor winding protection (~140 °C)

Rail drive system

• Drive type: Rail-guided with carriage
• Transmission: Roller chain drive system
• Rail options:
  • Multiple lengths (≈3.7 m – 6.8 m profiles)
• Emergency operation: Release on carriage (manual disengage)

Limit & control system

• Limit system options:
  • Absolute encoder (AWG)
  • Mechanical limit switches (MEC)
• Control type: External programmable controller
• Functions:
  • Direction monitoring
  • Intermediate positions
  • Load monitoring (AWG variants)

Physical characteristics

• Weight: ~15 kg
• Dimensions (approx):
  • Length: 245 mm
  • Width: 104 mm
  • Height: 369 mm

Key specs summary

•  Type: Rail-mounted industrial operator
•  Voltage: 230/400 V AC (3-phase)
•  Power: 0.55 kW
•  Torque: 80 Nm
•  Speed: 45 rpm
•  Door capacity: 30 m² / up to 4.5 m height
•  Drive: Rail + chain carriage system
•  Limits: AWG encoder or mechanical
•  Protection: IP54 (IP65 optional)