Cable Impulse Screwdriver e-M Series – Yokota

The YOKOTA electric system wrenches with integrated torque transducer and angle sensor
offer a large reduction of energy consumption, a high degree of speed, accuracy and
fantastic work efficiency.
ELECTRIC DRIVE

• Reduction of energy consumption Lean and Green.
• No need for pneumatic installation with compressor, air piping, hose and solenoid valves.
• No need for lubrication of the tool. Good for the working environment, especially near paint shops.
• Due to the newly developed outer rotor servo motor and the composite body, the YOKOTA system e-wrench has the lightest weight in its class.

RELIABLE AND ACCURATE TIGHTENING

• Faulty tightening detection with maximum accuracy due to the use of an integrated torque transducer and also an integrated angle sensor.
• During the tightening process, four different variables are measured and monitored: Torque – Angle – Time – Nº. of Impulses.
• Torque transducer and angle sensor located directly at the front of the main shaft, giving the best accuracy of measurement.
• Torque transducer measures directly and transmits the signals contactless.
• The angle sensor is an extremely compact (PAT) rotary encoder that detects both angle as well as
  direction by 1 degree, signal transmission contactless.
• Detects cross threads, double hits, contamination, etc.

DURABILITY

• The impulse unit is supported on both ends by ball bearings (PAT.P).
• The impulse unit has a check valve mechanism (PAT.P) to reduce the oil pressure on the main shaft.
• For heat suppression of the impulse unit it is equipped with a separate cooling fan.
• For heat suppression of the motor it is equipped with a cooling fan that reduces motor size (and weight at the same time).

OPERATOR COMFORTABILITY

• The reaction forces are close to zero due to the use of the oil impulse mechanism, even at high torque bolt tightening. Compared with older models, the number of bolt tightening is improved to 20 bolts/minute.
• Special feature to prevent cross threaded tightening: reversely rotating a bolt to a preset angle at the start of tightening.
• High speeds: Free speed (bolt run down) of 4800 RPM.
• High intensity LED light to project on the bolt.
• Combinations of buzzers and LED (Green / Red) for operator feedback on OK / NOK tightenings.
• Motor speed freely adjustable in the controller. For three different speed stages: Start of trigger / Run down / Final tightening.

CONTROLLER FEATURES

• 20 different parameter settings possible, for a variety of different work pieces.
• Touch screen LCD color display, showing graphs, torque, angle, impulses and more.
• Group management function (counting).
• Result of tightening output through various interfaces: USB, RS-232C, I/O and Ethernet connector.
• Simultaneous use of two tools on one controller is possible.