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Kollmorgen S72401-NANANA

Product Category: AC Servo Motor — S7200 Series

Product Overview:
The S72401-NANANA is the base (stack length 1) variant of the S7200 frame-40 servo motor with standard winding, no feedback installed, and standard shaft. This is the most compact, cost-effective option in the S7240 family, suitable for applications requiring moderate torque in a small package.

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Detailed content

Technical Specifications:

  • Series: S7200
  • Frame Size: 40
  • Stack Length Code: 1 = Short stack (lowest torque in frame 40 family)
  • Winding Code: NANANA (standard winding)
  • Feedback Code: NA = No feedback / Resolver only
  • Shaft Code: NA = Standard shaft with keyway
  • Rated Torque (Continuous): Approximately 2.5 Nm
  • Peak Torque: Approximately 7.5 Nm (3× continuous)
  • Rated Speed: Up to 5000 RPM (shorter stack = lower inertia = higher max speed)
  • Voltage Rating: 200–480 VAC
  • Insulation Class: Class H (180°C)
  • Protection Rating: IP40 (standard) / IP65 (with optional sealing kit)
  • Weight: Approximately 1.9 kg
  • Moment of Inertia (Rotor): Approximately 0.5 × 10⁻⁴ kg·m²

Material Composition:

  • Same as S72402 but with shorter stack length
  • Magnets: N42SH NdFeB
  • Housing: 6061-T6 aluminum alloy
  • Shaft: 42CrMo4 alloy steel, Ø10 mm with keyway (2.5 × 2.5 mm)
  • Bearings: 6800-series angular contact ball bearings (smaller than 6900-series due to frame size)

Structural Features:

  • Same square flange as S72402 (compatible mounting)
  • Shorter shaft: approximately 20 mm
  • Lighter weight enables higher acceleration
  • 1× M20 cable gland
  • 1× PTC temperature sensor
  • Balancing: G2.5 per ISO 1940-1

Working Principle:
Identical PMSM + FOC principle as other S7200 motors. The shorter stack length results in lower torque but also lower rotor inertia, enabling faster acceleration/deceleration — ideal for high-speed, low-torque applications.

Key Advantages:

  • Lowest inertia in frame 40 family — fastest dynamic response
  • Compact and lightweight — 1.9 kg
  • Cost-effective — base variant, no optional features
  • High max speed — 5000 RPM (vs 4000 RPM for stack 2)

Applicable Industries:

  • High-speed pick-and-place
  • Light-duty CNC axes (X/Y rapid axes)
  • Textile spindle drives
  • Lab automation
  • 3D printer axes (high speed)

Installation Requirements:

  • Same as S72402, with M4 mounting bolts (torque: 4 Nm)
  • Shaft: Ø10 mm — use corresponding coupling bore

Usage Notes:

  • Same resolver/NA feedback requirements as S72402
  • Due to low inertia, use lower current loop gain to avoid oscillation
  • Not recommended for high-torque applications — use S72402 or S7240S instead

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