Miki Pulley Stand-alone, Belt-type Stepless Speed Changers

Speed changers born from unique technology developed over long years of experience

Our belt-type stepless speed changers that can continuously vary their speed of rotation without stopping the machinery are derived from our unique technology developed over long years of experience. They can be easily mounted on any type of machinery or equipment, and dramatically improve working efficiency. Many models are available, including VARI-DIA pulleys (which vary the pulley diameter by forcibly displacing the variable-speed pulley to which the belt is attached) and intermediate gear pulleys (which place a variable-pitch pulley between the drive and driven pulleys).

P Models (Single-type variable-pitch pulleys)

These are VARI-DIA pulleys that use standard V belts. They are mounted on a motor, and change the RPM by moving the motor and forcibly changing the pitch diameter of the belt attached to the pulley.They are easily mounted on a motor shaft, since they use an adapter system. They also produce excellent performance from a simple mechanism; for example, a proprietary cam mechanism prevents slips.

AP Models (Single-type variable-pitch pulleys)

These are VARI-DIA pulleys that use standard V belts. They are used as a set with P models.By using the AP model on the motor and the P model on the driven side, speed can be changed without changing the distance between shafts. Speed cannot be changed with the stand-alone AP model.

PL Models (Single-type variable-pitch pulleys)

These are VARI-DIA pulleys that use standard V belts. They are used by mounting them on motors.They have speed-change ratios that can be as high as 1:2.4 (PL-210). There are four sizes of compatible motors, ranging from 0.2 kW to 1.5 kW (4-pole).

PK Models (ingle-type variable-pitch pulleys)

PF Models (Single-type variable-pitch pulleys)

These are VARI-DIA pulleys that use wide speed-change belts. They are used by mounting them on motors.Use of wide speed-change belts provides larger speed-change ratios, ensuring large transmission capacity. The optimal double-swinging design of the pulley for the wide speed-change belt also keeps the belt’s run-line constant, giving the belts exceptionally long service life. There are four sizes of compatible motors, ranging from 0.4 kW to 3.7 kW (4-pole).

R/RK/RH Models (Motor Slide Bases)

These are motor slide bases that move the set motor when changing the speed of a VARI-DIA pulley.Place the motor on which the VARI-DIA pulley is mounted onto the motor slide base and then simply rotate the handle to change the distance between the motor and driven-side shafts, easily change the speed.

L Models (Intermediate gear pulleys)

These are speed-change pulleys that are embedded between the motor and the machine.A cone that can move freely in the thrust direction reciprocally changes the pitch diameter of the intermediate gear pulley hung on the motor side and the intermediate gear pulley hung on the machine side, thereby varying the speed. Work the lever to move the pulley and change the speed.

U Models (Intermediate gear pulleys)

T Models (Intermediate gear pulleys)

These are speed-change pulleys that are embedded between the motor and the machine.A cone that can move freely in the thrust direction reciprocally changes the pitch diameter of the intermediate gear pulley hung on the motor side and the intermediate gear pulley hung on the machine side, thereby varying the speed. The T models can be freely used in designs that embed them in machinery.