TOHNICHI STC200CN3-G, STC500CN3-G tua vít lực điện tử kèm kiểm soát góc siết

TOHNICHI MFG, Japan 

Digital Torque Screwdriver with Angle Detection STC3-G series

Model:

STC50CN3-G (5-50 cN.m x0.02cN.m, Accepts 1/4" Hex Bits) STC200CN3-G (20-200 cN.m x0.1cN.m, Accepts 1/4" Hex Bits) STC500CN3-G (50-500 cN.m x0.2cN.m, Accepts 1/4" Hex Bits)

The Tohnichi STC3-G series digital indicating torque screwdrivers are designed for precision tightening and quality control inspections, offering advanced monitoring of both torque and rotation angle. The STC3-G measures both tightening torque and rotation angle to improve fastening reliability in low-torque assembly and inspection applications. Torque-and-angle monitoring helps detect abnormalities such as double tightening and insufficient rotation caused by galling or seizure. Its slim design, high-visibility OLED display and 360-degree LED notification ring provide clear, immediate operator feedback.

• Dual Monitoring: Tracks peak torque and final rotation angle simultaneously. This detects anomalies like double tightening, galling, or thread seizure. 
• Multi-Mode Operation: Features Tightening Mode for production line fastening, and Inspection Mode for retightening or breakaway torque checks. 
• Intuitive Feedback: Uses a high-visibility OLED display, a 360-degree LED ring, and a buzzer for real-time Pass/Fail alerts. 
• Data & Power: Stores up to 1,000 measurement records and features a USB Type-C port for charging and data export. It is powered by a rechargeable Ni-MH battery giving 50 hours of continuous use.

• Measures and records both peak torque and final rotation angle for improved fastening control and traceability.
• Detects tightening abnormalities, including double tightening and insufficient rotation angle caused by galling or seizure.
• Selectable Tightening Mode and Inspection Mode support production fastening, retightening inspection and breakaway torque inspection.
• Programmable upper and lower limits for torque and angle provide automatic Pass/Fail judgment.
• Multicolor 360-degree LED ring and buzzer provide visible and audible pre-alarm, tightening-complete and OK/NG notification.
• High-visibility OLED display shows torque, angle, memory number, battery status and Bluetooth connection status.
• Reversible measurement display supports comfortable viewing in different working positions.

• Tohnichi STC50CN3-G: Features a measuring range of 5 to 50 cN·m / 50-.998 kgf.cm . It is engineered for highly sensitive, ultra-low torque applications. 
• Tohnichi STC200CN3-G: Features a measuring range of 20 to 200 cN·m/ 2.00-3.99 kgf.cm . This variant balances mid-range fastening capacity with high precision. 
• Tohnichi STC500CN3-G: Features a measuring range of 50 to 500 cN·m/ 5.00-9.98 kgf.cm. It handles the upper-limit threshold for low-torque electronic small-screw assembly.

• Applications: Tightening fasteners on printed circuit boards (PCBs), server racks, and delicate semiconductor components.
• Why it fits: The ultra-low torque settings (starting at 5 cN·m) prevent cracking fragile substrates. Angle monitoring flags if a screw cross-threaded or stripped the plastic or aluminum threads. 

• Applications: Fastening sensors, interior trim modules, electronic control units (ECUs), and small dashboard clusters.
• Why it fits: In safety-critical sub-assemblies, "double-tightening" (accidentally retightening an already tightened screw) can damage components. The tool automatically detects and logs this error. 

• Applications: Assembling surgical instruments, diagnostic equipment, and wearable medical hardware.
• Why it fits: The dual-monitoring system satisfies strict medical compliance and quality control audits by saving up to 1,000 detailed measurement records.

• Retightening Inspection: Verifies if a previously tightened fastener has loosened or relaxed during transit or testing.
• Breakaway Torque Inspection: Measures the exact peak torque required to break a fastener loose to assess thread friction and clamp load stability.