Description
The SAN4II-40M (DAHCHIDENTSU SAN4II-40M / DAIICHI-DENTSU SAN4-40M) is an original Japanese industrial electric torque fastening controller from DAIICHI-DENTSU (DDK). It is a 4-axis high-precision intelligent tightening control unit that integrates multi-mode torque control, data storage, fault diagnosis and industrial communication. This controller realizes precise closed-loop control of torque, angle and yield point for electric screwdrivers/tightening shafts, solving high-quality automatic assembly, precise bolt fastening and data traceability requirements in automotive, electronics and manufacturing automation. It is 100% original brand new, fully compatible with DDK NFT series tightening shafts and legacy SAN4 series control systems.

Technical Specifications
- Brand: DAIICHI-DENTSU (DAHCHIDENTSU)
- Model: SAN4II-40M (SAN4-40M)
- Warranty: One Year
- Condition: 100% New & Original
- Control Axis: 4-axis independent synchronous control
- Rated Input Power: Three-phase AC200–220V ±10%, 50/60Hz
- Rated Power Consumption: 80W; Instantaneous peak current: 18A
- Control Modes: Torque control, angle control, current control, yield point control (CW/CCW), composite torque+angle control
- Parameter Storage: Standard 16 sets; expandable to 32 sets; supports 10,000 groups tightening data logging
- Communication: RS485 (Modbus RTU), optional RS232C; USB parameter programming
- Signal Output: 4–20mA analog, relay DI/DO control signals
- Operating Temperature: 0°C ~ +45°C
- Mounting: DIN rail / panel mounting
- Weight: 5.0 kg
- Certifications: CE, RoHS
Key Features & Benefits
- Multi-Mode Precise Fastening Control: Supports torque/angle/yield composite control, realizes high-precision bolt locking and anti-loosening correction, effectively avoids torque drop and fastening failure.
- 4-Axis Synchronous Control: Supports multi-axis simultaneous tightening and automatic forward/reverse switching, greatly improves assembly line efficiency.
- Large-Capacity Data Traceability: Stores massive tightening data, supports parameter upload/download and quality data analysis, meets industry quality traceability standards.
- Complete Fault Diagnosis & Protection: Built-in overvoltage, overcurrent, motor temperature, torque sensor fault alarm and interlock protection, improves equipment operation safety.
- Torque Hold & Speed Automatic Switching: Stable torque maintaining function, automatically adjusts speed according to fastening stages, ensures consistent fastening quality.
- Legacy System Compatibility: Standard electrical interface, fully interchangeable with original SAN4 series controllers and NFT series tightening shafts.
Application Scenarios
- Automotive Manufacturing: Engine, chassis, body parts automatic precise bolt tightening assembly.
- Electronics & Precision Assembly: Consumer electronics, new energy battery pack high-quality fastening production lines.
- Industrial Automation Equipment: Intelligent tightening stations, multi-axis robotic automatic fastening systems.
Frequently Asked Questions (FAQ)
- Q: What is the primary function of the SAN4II-40M?
- A: It is a 4-axis intelligent electric torque fastening controller, providing multi-mode precise bolt tightening control, data storage and fault monitoring.
- Q: Is SAN4II-40M compatible with legacy SAN4 series systems?
- A: Yes, it is fully compatible with DDK original SAN4 legacy controllers and NFT series tightening shafts.



