Two shifts of spindle speed. All transmission gears are made of high quality steel.

The directions of spindle revolution are reversible for tightening and loosing work.

Wear-resisting and self-adjusting cone clutch made of steel.

Enforced recycling lubricating of the clutch and bearings offers and excellent tightening work.

The output torque can be preset , controlled and adjusted accurately via a hydraulic servo, and the actual torque readout displays on a torque indicator.

Ergonomic designing machine. All the operation could be done by simply pressing down the height-adjustable hand lever.

Impact torque can be obtained by turning the switch-off lever.

Hydraulic servo actuate in case of over loading.

Mono-rail chassis with anti-friction bearings and insulating roller(optional bilateral-rail chassis).

Retractable jib with insulating rollers.