In ErgoPulse shut-off tools the air supply is shut off as soon as the pre-set torque has been reached, minimizing operator infl uence. The result is increased accuracy and faster tightening.

Torque sensing system: In ErgoPulse PTS and PTX nutrunners torque is “sensed” by means of a rotatable inertial mass acting against an adjustable spring. The result is a highly accurate and easily adjustable shut-off system.

Pulse mechanism: The pulse mechanism has pistons for minimum weight and long service life. The design is based on cam-guided pistons and rollers and the pulse cylinder is oil-filled. The moving parts are thus completely immersed in oil, which ensures a long service life.

Twin chamber vane motor: This is designed to give high torque at low speed, which gives the best characteristics for fast, accurate tightening.

TRIM valve: A patented adjustable valve at the air outlet is used to maximize tool accuracy on one type of joint, which could be hard, medium or soft.

• High reliability
• Consistent torque over time, low meanshift
• High level of durability
• High speed, short cycle times
• One-handed operation
• High power-to-weight ratio
• No springs to wear out
• No wear on key parts
• High precision components
• No reaction forces
• Light, well-balanced tools
• Low noise levels
• Lubrication free

(a) To be used as a guide only, fi nal torque depends on type of joint, accessories used and air pressure
(b) Female hexagon drive. Quick change chuck
(c) In full speed mode
(d) RE-reporting kit not included (Ordering No. 4250 1854 91)
(e) Measured at 5 bar air pressure