CTB500N2X22D-G CTB2, Digital Retighening Torque Wrench, 100-500 N.m

Tohnichi CTB500N2X22D-G is a high-precision digital indicating re-tightening torque wrench engineered for quality inspections, precise torque verification, and controlled tightening in demanding assembly environments such as heavy automotive manufacturing, machinery installation, and general industrial maintenance. Delivering accurate measurements from 100 to 500 N·m via a 3/4" square drive with interchangeable QH22D ratchet head, this manual tool features dual LCD/LED displays for enhanced visibility, advanced re-tightening detection to prevent joint damage, data memory for up to 999 measurements with USB/RS232C output, and judgment functions for immediate pass/fail feedback on torque and re-hit events. Robust and ergonomic with an aluminum body, it supports bi-directional operation (clockwise and counterclockwise) for versatile use in tightening and loosening tasks, promoting operator efficiency and reducing the risk of over-torquing in high-force applications.

Key Performance Specifications

• Torque Range: 100 - 500 N·m (885 - 4,425 in-lbs / 74 - 369 ft-lbs)
• Torque Graduation: 0.5 N·m
• Torque Accuracy: ±1% of indicated value
• Drive Size: 3/4" Square with QH22D Ratchet Head
• Loading Direction: Bi-directional (CW and CCW)

Physical and Environmental Specifications

• Overall Length: 949 mm (37.36")
• Weight: 4.0 kg (8.82 lbs)
• Handle Diameter: Approximately 30 mm (ergonomic for high-torque control)
• Operating Temperature: 32°F to 104°F (0°C to 40°C); suitable for standard workshop conditions
• Battery Life: Ni-MH rechargeable; approx. 20 hours continuous use
• Storage Conditions: Dry environment to prevent corrosion; calibration recommended annually

Key Features

• Dual Display System: LCD for direct light viewing and 7-segment LED for dark environments, with real-time and peak torque readouts
• Re-Tightening Detection: Advanced algorithm identifies and alerts on re-hit events to prevent over-tightening and joint failure
• Data Memory & Output: Stores up to 999 measurements (with date/time) via USB/RS232C for easy traceability and Excel integration
• Judgment & Alerts: Buzzer and multi-color LED for immediate pass/fail on set limits, plus auto zero and power-off functions
• Ergonomic Aluminum Body: Unified design adapted for color vision deficiencies, with CE marking and interchangeable head for versatile workflows
• Applications: Optimized for large fastener tightening and inspection in heavy machinery, construction, automotive chassis, and general industrial assembly; excels in re-tightening prevention and compliance verification