Mechanical torque limiter 4-9608-ETA

steelwith adapter

This torque adapter converts a 1/4 inch bit and holder into a preset torque tool for manual operation. It provides a tactile click when the preset torque is reached and prevents overtightening.

Area of application
Turn your 1/4 inch bit and a holder into a torque-controlled tool. The torque value is preset in the adapter and can be clamped between any standard holding tool and a bit. The click indicates when the torque is reached. The adapter cannot be overtightened. When loosening a fastener there is no torque unlocking (due to the blocked core shaft), so no additional loosening tool is required (approx. 30% higher torque when loosening). The adapter is primarily intended for manual operation.

Technical description
The adapters are tested according to DIN EN ISO 6789 (manually operated torque screwdriving tools) and maintain a tolerance of ±10% for at least 20,000 clicks. The torque value should be checked regularly by the user using a torque meter. The adapter works by locking the ratchet in the bushing sleeve. The patented system includes a hollow core shaft and a damping cylinder. The core shaft moves the movable ratchet; the damping cylinder has a slot that allows the spacer sleeve to slide along the core shaft. When the applied torque exceeds the preset value, the core shaft becomes inactive so the continuous torque is no longer increased on the fastener.

General information
Torque adapters are commonly used as a complete solution for work on electronic equipment, quick-change systems, robotic stations, aerospace, medical applications, or on any workbench where accurate torque control is required.

Characteristics / technical specifications

• Preset torque, precise for at least 20,000 clicks
• Tolerance: ±10% (factory certificate available on request)
• Tightening torque: 8.0 Nm / 81.6 Kgf·cm / 70.8 in·lb
• Bit magnetic holder: 1/4 inch hexagon 6.35 mm (DIN 3126)
• Drive hex shank: 1/4 inch (DIN 3126)
• Material: alloyed steel
• Adapter Ø: 20 mm
• Adapter length: 33.5 mm (without shank)
• Total length: 43.5 mm
• Weight: 69 g