The main characteristic of this model is the double worm gear reduction, with speed ratio ranges from 1:150 to 1:2500, is used in applications that needs high reductions. This model is available in aluminum alloy cast box and in iron alloys cast box to the biggest models.
Reference technical data
| Reduction ratio | 1:7.5 to 1:2,500 |
|---|---|
| Power | Up to 25 hp |
| Torque | See catalog or Pierini engineering |
| Lubrication | Mineral oil — level per manual |
| Temperature | -10 °C to +40 °C (covered environment) |
| Mounting | Reinforced flange / feet |
| Type | PRD heavy-duty reducer |
| Output | High mechanical strength |
| Line | PRD |
| Application | Crushing, conveyors, loaded starts |
| Model | Reduction | Power (hp) |
|---|---|---|
| PRD-02/01 |
150 200 225 300 375 450 600 |
0,16 0,16 0,16 0,12 0,12 0,12 0,12 |
| PRD-03/01 |
150 200 225 300 375 450 600 750 900 |
0,33 0,33 0,25 0,16 0,16 0,16 0,16 0,12 0,12 |
| PRD-04/02 |
150 200 250 300 375 450 500 600 750 900 1200 1600 |
0,50 0,33 0,33 0,33 0,33 0,25 0,25 0,25 0,16 0,16 0,16 0,12 |
| PRD-05/03 |
150 |
0,75 0,50 0,50 0,50 0,50 0,33 0,33 0,25 0,25 0,16 0,16 0,12 |
| PRD-06/04 |
150 200 250 300 375 450 600 750 900 1200 1600 2000 |
1 0,75 0,75 0,50 0,50 0,50 0,50 0,33 0,33 0,33 0,25 0,16 |
| PRD-07/04 |
200 300 450 500 600 750 900 1200 1600 2000 2500 |
1 0,75 0,75 0,75 0,75 0,50 0,50 0,50 0,33 0,25 0,25 |