2. Driving system

2.1 Horizontal shaft parts
Friction clutch is installed between motor and horizontal shaft to connect them.
The horizontal shah is supported at two points by bearing housing (3) and bearing houseing (4) with built-in ball bearings and spiral gear is installed between them. Bearing housing (3) and (4) are provided with oil seals, respectively, to prevent leakage of gear oil.
A groove has been cut at the pump side end of horizontal shaft so that the safety joint may enter.

2.2 Vertical shaft parts
The vertical shaft is supported by upper and lower bearing parts and a pinion is provided between them.
The upper bearing parts is provided with flat spring and the lower bearing parts with lower spring so as to absorb vibration in vertical direction. Further. the upper bearing parts is supported by upper springs at 6 points in a radial direction for absorption of vibration in horizontal direction.

2.3 Brake
The brake is so constructed that the brake is applied by causing brake lining to be pressed against the outside of friction pulley with a spring.
Normally it is desirable to stop without using brake, but only when prompt stopping is desired in case of emergency or for repair and inspection, brake can be applied.

2.4 Friction clutch
The friction clutch is used to effect slow starting and acceleration so as to prevent motor overload. The motor shah is equipped with friction block and friction boss and the horizontal shaft, with friction pul!ey.
After start-up, the motor attains its rated rotation instantly, friction block lining is pressed under centrifugal force against the inside of friction pulley, slip occurs between friction pulley and lining, and driving force is transmitted to the friction pulley (horizontal shaft side).
The bowl is so designed that normally it attains its rated rotation in about 5 to 10 minutes.
Friction clutch

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