Technical & Performance Specifications

• Rated Matching Drive Input Voltage: 120/240VAC single/three-phase
• Continuous Stall Torque: 12.8 N·m
• Peak Transient Torque (0–2s): 38.4 N·m
• Rated Continuous Operating Speed: 3000 RPM
• Maximum Mechanical Safe Speed: 6000 RPM
• Rotor Moment of Inertia: 0.0021 kg·m²
• Rated Phase Operating Current: 11.5A RMS
• Feedback Device (ACC suffix): SFD3 intelligent single-cable digital feedback (27-bit multi-turn absolute position)
• Winding Insulation Class (C suffix): Class F reinforced high-temperature winding, 155°C maximum winding temperature
• Mechanical Shaft (N): Standard keyway solid output shaft
• Integrated Holding Brake (E suffix): 24VDC power-off electromagnetic holding brake, static holding torque 14N·m
• Protection Rating (M suffix): IP65 housing, IP67 output shaft seal
• Flange Standard: AKM5 series unified square mounting flange pattern

Material Composition

• Motor Housing: High-pressure die-cast aluminum alloy vertical fin heat sink housing, matte black anti-static hard anodized coating
• Stator Core: 0.3mm ultra-thin grain-oriented silicon steel lamination stack with low iron loss electromagnetic design
• Rotor Magnet: High-coercivity upgraded sintered neodymium magnet with high-temperature anti-demagnetization coating (AKM2G exclusive magnet formulation)
• Stator Winding: Class F polyimide insulated copper magnet wire, full vacuum epoxy resin impregnation
• Bearing Assembly: Double-row sealed high-speed deep-groove ball bearing with low-viscosity high-temperature synthetic grease
• Output Shaft: 4140 quenched tempered alloy steel, induction hardened keyway surface anti-wear treatment
• Holding Brake Assembly: Permanent magnet power-off brake with friction disc copper alloy lining, 24VDC coil excitation winding

Structural Features

• AKM unified square flange mounting interface with upgraded extended stator stack for AKM2G increased torque density without flange dimension modification
• Rotatable 360° rear SFD single-cable integrated junction box combining power and feedback wiring into single cable port
• Integrated rear power-off holding brake module mounted between rotor and feedback sensor, sealed independent chamber to isolate brake friction dust
• Dual front/rear high-speed sealed bearing assembly optimized for 6000RPM maximum continuous mechanical rotation speed
• External vertical aluminum heat sink fin array for passive natural convection heat dissipation without auxiliary cooling fan
• Full perimeter EPDM rubber O-ring sealing on all housing split joints for dust and liquid splash isolation

Working Principle

1. Three-phase sine wave alternating current output from matched AKD low-voltage servo drive energizes stator distributed winding to generate high-strength rotating electromagnetic field;
2. AKM2G upgraded high-energy IPM rotor magnet interacts with stator rotating field to generate 30% increased continuous electromagnetic torque relative to legacy AKM models of identical frame size;
3. SFD3 single-cable digital feedback sensor installed at rear rotor end transmits 27-bit multi-turn absolute position signal back to matched AKD drive over shared power cable without separate feedback wiring;
4. Integrated 24VDC power-off holding brake engages automatically when brake coil power supply is cut to lock output shaft static position; brake releases immediately upon 24VDC coil energization for normal rotation operation;
5. Vacuum-impregnated stator winding eliminates internal air gaps to minimize winding temperature rise under full continuous torque load cycle operation.

Function Features

1. AKM2G exclusive upgraded electromagnetic design delivers 30% higher torque density than legacy AKM series with identical mechanical mounting dimensions;
   1. SFD3 single-cable integrated feedback architecture merges power lines and absolute position signal into one unified cable, cutting wiring harness quantity and cabinet wiring labor cost by 50%;
   2. Built-in 24VDC power-off holding brake provides constant static locking torque for vertical lifting axes without sustained motor energization; brake noise suppressed via copper alloy friction lining design;
   3. 27-bit multi-turn absolute encoder retains full position data after complete equipment power loss; no homing cycle required upon power restart to improve production cycle efficiency;
   4. Low cogging torque rotor lamination layout maintains torque ripple <1.0% across full speed spectrum, eliminating micro-jitter for ultra-precision positioning applications;
   5. Class F reinforced winding supports stable continuous operation within ambient temperature range of -20°C ~ +45°C without insulation degradation.

   Advantage Highlights

   1. Higher torque density reduces required motor frame size for fixed torque demands, lowering overall mechanical equipment footprint and weight;
   2. Native plug-and-play compatibility with all AKD low-voltage servo drives; WorkBench software auto-identifies SFD feedback parameters without manual configuration input;
   3. Integrated holding brake eliminates external mechanical locking assemblies, simplifying mechanical design of vertical transport and Z-axis machining equipment;
   4. Absolute multi-turn feedback removes mandatory homing routines, cutting machine startup time and avoiding positioning offset risks after emergency power failure;
   5. Standard IP65 enclosure rating adapts to general factory environments with coolant splashes, light dust and moderate humidity; full CE, UL, RoHS global compliance certification.

   Applicable Industries

   3C precision assembly equipment, vertical CNC machining Z axes, packaging vertical lifting robots, laser cutting positioning stages, semiconductor handling equipment, medical automated transport platforms, textile high-speed winding machinery.

   Installation Requirements

   1. Standard AKM5 square four-hole flange mounting; M8 high-strength bolts cross-tightened evenly to 12N·m torque to eliminate flange uneven stress;
   2. Minimum clearance of 30mm surrounding motor heat sink fins to maintain unobstructed natural convection airflow;
   3. Shaft coupling radial concentricity runout tolerance limited ≤0.03mm; flexible bellows coupling is mandatory, rigid direct shaft connection prohibited;
   4. Rear integrated SFD cable junction box must be mounted upward or horizontal to prevent liquid accumulation inside terminal cavity;
   5. Separate isolated 24VDC power supply for holding brake circuit; install independent fuse for brake coil loop to avoid cross-circuit interference;
   6. Mounting base flatness tolerance ≤0.05mm across full flange contact surface to prevent bearing side load during long-term operation.

   Usage Precautions

   1. If motor housing surface temperature exceeds 90°C, halt operation for passive cooling; maximum sustainable continuous winding temperature is 130°C;
   2. Prohibit heavy radial impact force directly applied to output shaft during mechanical assembly to prevent permanent deformation of bearing inner race;
   3. Avoid sustained operation within mechanical resonance speed band of 1500–2200 RPM to suppress vibration and bearing fatigue loss;
   4. Holding brake coil must receive stable 24VDC ±10% supply during motor rotation; incomplete voltage supply leads to incomplete brake release and abnormal friction heat generation;
   5. High-pressure water jet cleaning of rear feedback junction box and brake housing is strictly forbidden to prevent water ingress damaging SFD sensor and brake friction components;
   6. Only pair with single/three-phase 120/240V low-voltage AKD series drives; connection to 380–480V high-voltage drives causes irreversible winding burnout.