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Kollmorgen AKM52G-ANC2EJ0

Product Name: Kollmorgen AKM52G Frameless Servo Motor

Product Series: AKM (Advanced Kinetics Motor) — Frameless

Model Number: AKM52G-ANC2EJ0

Outer Diameter52 mm (52 = 52mm OD)

Detailed content

Stack Length: G = Standard length code for 52mm frame

Winding Code: AN = High-torque winding (ANC2 = specific torque/speed variant)

Feedback Code: EJ0 = EnDat 2.2 Absolute Encoder, Single-Turn, 128 cycles/rev, 5V

Rated Continuous Torque: Approximately 2.0 Nm (dependent on ANC2 winding)

Peak TorqueApproximately 6.0 Nm

Rated Speed: 3000 RPM (typical for AKM52G)

Max Speed4500 RPM

Rated Voltage48 VDC bus (24-48VDC range)

Motor Type: Brushless DC (BLDC) / Permanent Magnet Synchronous Motor (PMSM)

Construction:

  • Stator: Laminated silicon steel, copper windings
  • Rotor: NdFeB rare-earth permanent magnets
  • Housing: None — frameless design
  • Bearings: None — customer-supplied
  • Shaft: None — customer-supplied
  • Encoder: Integrated EnDat 2.2 absolute encoder on rear

Encoder Specifications (EJ0):

  • Type: Single-turn absolute optical encoder
  • Resolution: 128 cycles/rev (512 counts/rev quadrature)
  • Protocol: EnDat 2.2
  • Power: 5V DC
  • Output: Differential RS422

Electrical Connections:

  • Motor Power: 3-phase U, V, W + PE (connector on stator)
  • Encoder: EnDat 2.2 (6-pin or 9-pin connector per variant)

IP RatingIP00 (frameless — protection determined by customer integration)

Weight: Approximately 0.45 kg (motor only)

Material Composition:

  • Stator Lamination: M19 silicon steel
  • Windings: Class H insulation, copper
  • Magnets: NdFeB N42SH grade
  • Encoder Disk: Glass, chrome-on-glass

Applicable Industries: Collaborative robots, surgical robots, drone gimbals, aerospace actuators, precision optics, semiconductor wafer stages.

Installation Requirements:

  • Press-fit or bond stator into customer mechanical structure
  • Customer must provide bearings, shaft, and housing
  • Align encoder axis to < 0.05 mm runout
  • Connect EnDat 2.2 cable to AKD drive with proper termination

Precautions:

  • Handle with ESD protection (encoder is sensitive)
  • Do not exceed rated current (thermal limit is stator winding temperature)
  • Ensure encoder cable bend radius > 30 mm
  • Verify EnDat 2.2 termination resistor is installed at drive end only

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