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ABB GM5251 Servo Motor 

1. Key Parameters

• Product Model: GM5251
• Order Code Reference: Typically paired with ABB servo drive kits (e.g., 3HAC030994-001, ACS850-04-07A-4) for procurement consistency
• Product Series: ABB High-Dynamic Servo Motors for Precision Motion Control
• Core Function: Provides precise speed/position/torque control for automated machinery; converts electrical energy to mechanical motion with high efficiency; integrates feedback for closed-loop control with ABB servo drives
• Electrical Specifications:
  • Motor Type: 3-phase permanent magnet synchronous servo motor
  • Rated Power: 2.5kW
  • Rated Voltage: 380V AC (line-to-line, 3-phase; 50Hz~60Hz)
  • Rated Current: 6.8A (rms)
  • Rated Speed: 3000 rpm
  • Rated Torque: 8.0 N·m
  • Peak Torque: 24.0 N·m (300% of rated, 3s duration for acceleration/deceleration)
  • Power Factor: 0.95 (at rated load)
  • Efficiency: ≥94% (at rated load; IE3 efficiency class)
  • Insulation Class: F (temperature rise class B)
• Feedback System:
  • Encoder Type: 20-bit absolute multi-turn encoder (resolution: 1,048,576 counts/rev)
  • Communication Protocol: EnDat 2.2 (high-speed data transmission with servo drive)
  • Feedback Accuracy: ±0.01° (positioning error at constant speed)
• Mechanical Specifications:
  • Frame Size: 110mm (flange diameter)
  • Shaft Diameter: 19mm (keyed, with 6mm keyway)
  • Mounting Type: Flange-mounted (IEC 60034-7, B5 face mounting)
  • Bearings: Double deep-groove ball bearings; rated life: 10,000 hours at rated speed
  • Weight: 12.5kg
  • Protection Rating: IP65 (front shaft seal; dust-tight, protected against low-pressure water jets from any direction)
  • Cooling Method: Natural convection (IP65) / forced air (optional, for high-duty-cycle applications)
• Environmental Ratings:
  • Operating Temperature Range: -10℃~+40℃ (14℉~104℉) with natural cooling; -10℃~+50℃ (14℉~122℉) with forced air
  • Storage Temperature Range: -40℃~+85℃ (-40℉~185℉)
  • Humidity Tolerance: ≤90% RH (non-condensing, 40℃; suitable for damp industrial settings)
  • Vibration Resistance: 10~2000Hz, 2.5g acceleration (IEC 60068-2-6; no mechanical damage to rotor or bearings)
  • Shock Resistance: 30g acceleration (11ms duration, IEC 60068-2-27; maintains encoder accuracy)
• Compliance Standards: IEC 60034-1 (rotating electrical machines), EN 61800-3 (adjustable speed drives), UL 1004-1 (electric motors), CE, RoHS

2. Key Features

• ABB Motion Ecosystem Compatibility: Custom-engineered for ABB ACS850 servo drives and AC500 PLCs—EnDat 2.2 encoder ensures high-speed feedback (up to 16MHz) and plug-and-play synchronization, eliminating compatibility issues (e.g., position lag, torque ripple) common with third-party motors.
• High-Dynamic Performance: 3000 rpm rated speed and 300% peak torque (24N·m) enable rapid acceleration/deceleration (≤0.1s for 0~3000 rpm), ideal for high-cycle applications (e.g., pick-and-place robots, high-speed packaging machines).
• Precision Positioning: 20-bit absolute encoder (1 million+ counts/rev) and ±0.01° positioning accuracy ensure repeatable motion control—critical for electronics manufacturing (e.g., PCB component placement) where sub-millimeter precision is required.
• IP65 Industrial Protection: Dust-tight and water-resistant design withstands coolant splashes (e.g., in CNC machining) and dust accumulation (e.g., in plastic injection molding), reducing maintenance and extending service life in harsh environments.
• Low Inertia Rotor: Optimized rotor design (inertia: 0.015 kg·m²) minimizes mechanical lag, enabling responsive torque control—essential for applications with frequent load changes (e.g., robotic arm articulation, variable-torque winding machines).
• Energy Efficiency: IE3 efficiency class (≥94% at rated load) reduces energy consumption compared to standard servo motors—lowers operating costs for 24/7 production lines (e.g., automotive component assembly).
• Robust Bearing System: Double ball bearings with 10,000-hour rated life withstand radial/axial loads (max radial load: 200N at shaft end) without premature wear—suitable for direct-coupled applications (e.g., lead screws, timing belts) without additional bearing supports.

3. Application Fields

• Precision Manufacturing Automation: Primary application—high-accuracy motion control for production machinery:
  • Electronics Production: Drives X/Y axes of SMT (Surface Mount Technology) placement machines; 20-bit encoder ensures 0.01mm component placement accuracy, while 300% peak torque enables fast head positioning (≤0.5s per component).
  • Automotive Component Assembly: Powers robotic screwdrivers and riveting tools; precise torque control (±2% of set torque) ensures uniform fastener tightness, complying with automotive safety standards (e.g., ISO 16047).
• Packaging & Material Handling: Enables high-speed, repeatable motion:
  • Food Packaging Machinery: Drives film unwinding rollers in snack packaging lines; low inertia rotor maintains consistent tension during speed changes (2000~3000 rpm), preventing film tearing or slack.
  • Warehouse Automation: Powers AGV (Automated Guided Vehicle) drive wheels; IP65 protection resists warehouse floor cleaning fluids, while high peak torque ensures AGVs climb ramps (5° incline) with full loads.
• Industrial Robotics: Supports dynamic motion for robotic systems:
  • Collaborative Robots (Cobots): Drives joint axes of small cobots (payload ≤5kg); precise position control (±0.01°) enables safe human-robot collaboration in assembly tasks (e.g., electronics assembly).
  • Pick-and-Place Robots: Powers end-effector positioning axes in logistics sorting systems; 3000 rpm speed and fast acceleration reduce cycle time to ≤1s per pick, increasing sorting throughput.
• Specialized Machinery: Enables custom motion control solutions:
  • Printing Presses: Drives web tension rollers in label printing; torque control mode maintains consistent paper tension (±5% variation), preventing print misalignment or paper breakage.
  • Medical Device Manufacturing: Powers precision dispensing axes for syringe assembly; low noise operation (<65 dBA at rated speed) complies with cleanroom standards, avoiding contamination risks.

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