Miki Pulley Belt-type Stepless Speed Changer Units

Stepless speed changer units use variable-speed pulleys

These units change speeds without changing the distance between shafts by making the belt pitch diameter of one variable-speed pulley track the belt pitch diameter of another variable-speed pulley when its belt pitch diameter is changed. Since speed can be changed without changing the distance between shafts, more compact designs are possible, mounting is simple, and ease of use is exceptional. They can be combined with motor/speed reducer and electromagnetic clutches and brakes can also be built in. These units are easy to maintain and belt-type power transmission is efficient, helping to save energy.

ANS Models

Rotate the handle of the speed changer on the motor side to change the width of the speed-change pulley.When you change the pitch of the speed-change belt hanging from it, the pitch diameter of the speed-change pulley on the machinery side tracks it, for a belt-type stepless speed changer that can freely change the rotation speed. Instead of the coil spring that traditionally tracks the machinery-side pulley, the ANS models use a constant-pressure load disc spring to track the pitch diameter changes of the motor-side pulley. Use of a disc spring increases transmission efficiency and enables stable speed-change operation.

ANW NHN/PMN Types

These models combine ANS model speed changers with motors and worm reducers. The appropriate output RPM is obtained using the speed change mechanism.There is a full line-up of shapes, including horizontal and vertical, so installations are easy to design.

ANW NKN Types

These models combine ANS model speed changers with motors and worm reducers. The appropriate output RPM is obtained using the speed change mechanism.There is a full line-up of shapes, including top and bottom facing output shafts, so installations are easy to design.

ANG GDN Types

These models combine ANS model speed changers with motors and co-axial reducers. The appropriate output RPM is obtained using the speed change mechanism.Co-axial reducers are not constructed to require oil, making them maintenance-free to provide design flexibility.

ACW Models

These are models that combine an ANS model speed changer with an electromagnetic clutch/brake, motor, and worm reducer. They are a compact design that incorporates an electromagnetic clutch in the driven speed-change pulley and an electromagnetic brake on the worm reducer input shaft.Combining with a worm reducer enables the optimum output RPM, while the electromagnetic clutch and brake enable simple start/stop, positioning, inching, and intermittent operation.

ANB Models

These are models that incorporate an electromagnetic clutch/brake unit and a motor into an ANS model speed changer. This enables the optimum output RPM, while the electromagnetic clutch and brake enable easy and high frequency start/stop, positioning, inching, and intermittent operation.

PDS Models

Rotate the handle of the speed changer on the motor side to change the width of the speed-change pulley.When you change the pitch diameter of the speed-change belt hanging from it, the pitch diameter of the speed-change pulley on the machinery side tracks it, for a belt-type stepless speed changer that can freely change the rotation speed.

PDC Models

These are stepless speed changers that incorporate a motor and a driven shaft into a PDS model speed changer on a bed.They are very simple speed changer units. They are perfect for customers who design creatively.

PDG BSN Types

These are stepless speed changers that incorporate a motor and a worm reducer into a PDS model speed changer on a bed.The PDG-BSN is the standard model, but a brake motor can be used for the motor, the output shaft of the speed reducer can be faced upwards, a two-stage worm reducer can be used, or a variety of other changes can be made.

AHS Models

The AH series are boxed units that can be combined, as necessary, with transmission equipment such as electromagnetic clutches/brakes and motors around a belt-type stepless speed changer.The AHS models are intermediate speed-changer units that can be mounted between machine and machine or between motor and machine. Electromagnetic clutches/brakes can be built into the standard AHS-A model as tracking functions (for the AHS-B model), enabling complex control such as frequent start/stop and inching.

AHM Models

The AH series are boxed units that can be combined, as necessary, with transmission equipment such as electromagnetic clutches/brakes and motors around a belt-type stepless speed changer.These models integrate an AHM model with a motor and speed changer. Electromagnetic clutches/brakes can be built into the standard AHM-A model as tracking functions (for the AHM-B model), enabling complex control such as frequent start/stop and inching.