| Typical application |
Clean, empty HDPE or PP drums requiring controlled-size flakes |
Whole or flattened drums requiring high torque and coarse size reduction |
Applications requiring shredding followed by a more uniform granulate |
| Typical installed motor power |
20–35 kW |
45–75 kW |
60–110 kW total system power |
| Typical throughput for empty plastic drums |
Approximately 250–600 kg/h |
Approximately 500–1,200 kg/h |
Approximately 400–1,000 kg/h, depending on the granulator screen |
| Recommended feed preparation |
Remove liquid residue and loose metal parts; drums may need flattening |
Usually accepts whole drums; oversized metal components should be removed |
Requires consistent feed quality to prevent screen and knife blockages |
| Approximate equipment footprint |
2.5–4.5 m², excluding conveyors and access space |
4–7 m², excluding conveyors and access space |
8–15 m², excluding storage, conveyors, and dust-control equipment |
| Suggested service clearance |
At least 0.8 m on service sides and 1.0 m at the feed area |
At least 1.0 m on service sides and 1.2 m at the feed area |
At least 1.2 m around the shredder and granulator for screen and knife access |
| Floor and foundation needs |
Level industrial floor; anchoring is normally required |
Rigid reinforced floor and secure anchoring recommended because of higher torque |
Reinforced floor, accurate alignment, and additional support for conveyors or separators |
| Electrical installation |
Three-phase supply, typically 380–480 V; allow space for a motor control cabinet |
Three-phase supply with higher short-circuit and starting-current capacity |
Separate protection and controls may be needed for the shredder, granulator, and conveying system |
| Dust and noise provisions |
Local extraction may be needed when drums contain labels, dust, or dried residue |
Noise and vibration control should be considered because of high-torque cutting |
Dust extraction is strongly recommended because the granulator produces finer particles |
| Main maintenance access points |
Top hopper, cutting chamber, rotor, fixed knives, and hydraulic unit |
Two shafts, cutting discs, gearbox, bearings, hydraulic system, and discharge area |
All shredder access points plus granulator rotor, screen, knives, and dust filter |
| Routine inspection interval |
Daily visual checks; knife and fastener inspection weekly under regular use |
Daily checks; gearbox, bearing, and cutting-disc inspection weekly or according to operating hours |
Daily checks for both stages; screens and granulator knives require frequent inspection |
| Typical wear-part work |
Sharpen or replace knives; clean the cutting chamber and check hydraulic oil |
Inspect and replace cutting discs, check shaft alignment, and service the gearbox |
Maintain knives, screens, bearings, belts, and dust-collection components |
| Estimated electricity cost per operating hour |
About US$2.25–3.94 per hour |
About US$5.06–8.44 per hour |
About US$6.75–12.38 per hour |
| Operating-cost profile |
Lowest power and service cost; throughput may be limited for whole drums |
Higher power and wear-part cost, but good capacity for difficult or inconsistent feed |
Highest power and maintenance cost, but produces more uniform material in one line |
| Best choice when |
Floor space and operating budget are limited |
The feed includes whole drums, thick walls, or variable shapes |
The recycled material must meet a tighter size specification |