Model Code Breakdown:

• DA = Direct Drive Rotary
• 12 = Frame Size 12 (Outer Diameter: 310 mm)
• L = Long Stack Length
• 1600 = Continuous Torque: 16 Nm
• A = Standard Winding
• G = Connector Type G (Mil-Spec or equivalent)
• F = Feedback: Resolver

Continuous Torque: 16 Nm

Peak Torque: 48 Nm (10 seconds)

Rated Speed: 1,500 RPM

Maximum Speed: 3,000 RPM

Stator Outer Diameter: 310 mm

Stator Inner Diameter (Bore): 170 mm (customizable)

Stack Length: 65 mm (typical for “L” variant)

Rotor Outer Diameter: 168 mm

Rotor Inertia: 0.12 kg·m² (typical)

Torque Constant (Kt): 1.06 Nm/A

Voltage Constant (Ke): 10.1 V/krpm

Phase Resistance: 0.42 Ω (at 20°C)

Phase Inductance: 0.85 mH

Weight (Stator): 8.5 kg

Weight (Rotor): 6.2 kg

Total Weight: 14.7 kg

Feedback Type: Resolver (12-bit, ±10 arc-sec accuracy)

Connector: Mil-Spec circular connector (19-pin)

Insulation Class: Class H (180°C)

Thermal Resistance (Rotor to Stator): 0.35 °C/W

Cooling Method: Liquid cooling (stator jacket) — required for continuous operation

Environmental Rating: IP65 (with proper sealing)

Operating Temperature: -10°C to +60°C (with liquid cooling)

Structural Features:

• Stator: Laminated silicon steel, epoxy-potted, with integrated coolant channels
• Rotor: NdFeB permanent magnets, dynamically balanced, stainless steel retention sleeve
• Bearings: Ceramic hybrid bearings (Si3N4 balls, steel races) — preloaded
• Housing: Anodized aluminum stator with O-ring seal

Key Advantages:

• Zero-backlash direct drive — no gearbox required
• High torque density: 16 Nm in 310 mm OD
• Resolver feedback provides absolute position without power-up homing
• Liquid cooling enables continuous rated torque operation

Applicable Industries:

• Semiconductor wafer handling (rotation stages)
• Antenna and radar positioning
• Telescope and satellite tracking
• High-precision turntables
• Medical imaging (CT/MRI gantry rotation)

Installation Requirements:

• Mount stator to customer structure with 8 × M8 bolts (torque: 12 Nm)
• Connect coolant lines: 1/4″ NPT, 2–4 L/min flow rate, 20–40°C inlet temperature
• Align rotor to stator bore within 0.02 mm concentricity
• Preload bearings to 15–20 N axial force

Usage Notes:

• Liquid cooling is mandatory for continuous operation — air cooling derates torque by 40%
• Resolver excitation: 10 kHz, 7 Vrms (provided by drive)
• Do not rotate shaft manually when unpowered — resolver requires drive excitation
• Maximum radial load on shaft: 500 N