MSMF042L1V2M Panasonic A6 400W Motor + BRK, Torque Nm - 1.27, RPM - 3000

About MSMF042L1V2M Panasonic A6 400W Motor + BRK, Torque Nm - 1.27, RPM - 3000

MSMF042L1V2M 400 W AC Servo Motor (with brake)

Heres a clean technical breakdown of what your specs mean and whether they are correct.

Key verified specifications (Panasonic A6 series)

From official datasheet:

• Rated power: 400 W
• Rated torque: 1.27 Nm
• Rated speed: 3000 rpm
• Max speed: 6000 rpm (no load)
• Holding brake: Yes (built-in)
• Encoder: 23-bit absolute (very high precision)
• Frame size: 60 mm
• Inertia: very low ( 0.30 10 kgm)
• Protection: IP65

Source confirms exactly your numbers:

What 1.27 Nm @ 3000 rpm really means

This is a servo motor rated operating point, not peak capability.

• At 3000 rpm, it can continuously deliver 1.27 Nm
• At lower speed, it can deliver more torque (up to ~3.82 Nm peak)
• The motor is designed for continuous precision motion, not brute force

So:

Your torque value is correct
Your RPM value is correct
They are rated operating specs, not maximum stall limits

What this motor is actually good for

This is a high-performance industrial servo motor, used in:

• CNC machines
• Robotic arms
• Packaging machines
• Pick-and-place systems
• Automation axes

Key behavior:

• High precision (23-bit encoder 8.3 million counts/rev)
• Very smooth low-speed control
• Fast response (A6 series ~3.2 kHz bandwidth)
• Not designed for heavy continuous load torque

  Correct:

  • 1.27 Nm = continuous rated torque
  • 3.8 Nm = short peak torque
  • Above that = overload only (very brief):

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    Dimensions (Size)

    • Flange size (front face): 60 mm 60 mm
      2.36 in 2.36 in
    • Shaft diameter: 14 mm (approx.)
      0.55 in
    • Shaft length (out from body): ~30 mm
      1.18 in

    Typical overall motor body length (approx.):

    • ~5.5 to 6.5 inches (140165 mm) depending on brake version and connector type

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    Weight

    • Net weight: 1.7 kg
      3.75 lb (approx.)

    (Some listings show 1.2 kg for non-brake version, but your model with brake is ~1.7 kg)

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    Simple Summary (in inches/lb)

    • Width Height (front): 2.36 in 2.36 in
    • Length: ~5.56.5 in (approx.)
    • Weight: ~3.7 lb