Tiruppur City Municipal Corporation_Pre Shredder04

Supply, Erection and Testing Commissioning of Shredder Machine With Complete Set ComponentSpecificationTotal Power200 HP (150 kW)Motor Configuration2 x 100 HP (75 kW) AC Induction MotorsMotor StandardIE3 High-Efficiency, 3-Phase, 415V / 50HzGearbox TypeHeavy-duty Planetary or Helical Gear reducers (2 units)Power TransmissionDirect drive via fluid coupling or heavy-duty v-belt to gearboxShaft Speed15 to 35 RPM (Low speed ensures maximum shearing force and minimizes dust/noise)2. Cutting Chamber & ToolingThe cutting chamber is the core of the machine. The metallurgy of the blades dictates the maintenance schedule and the types of materials the machine can handle without fracture.ComponentSpecificationChamber DimensionsApprox. 1200 mm (L) x 1000 mm (W) (Customizable based on hopper feed)Shaft DesignTwin counter-rotating hexagonal or splined shaftsShaft MaterialEN-19 or EN-24 hardened alloy steel (Diameter: 150 mm – 200 mm)Blade MaterialD2, H13, or special EN-31 Tool SteelBlade Heat TreatmentThrough-hardened to 58–60 HRC for high wear resistanceBlade Thickness40 mm to 60 mm (Depending on desired output shred size)Cleaning Hooks/SpacersStationary wiper plates installed between blades to prevent material wrapping and self-clean the shafts3. Performance & CapacityThroughput varies significantly based on the bulk density and sheer resistance of the input material.Material TypeEstimated Throughput (Tons Per Hour)Municipal Solid Waste (MSW)5.0 – 10.0 TPHIndustrial Plastics / Drums4.0 – 6.0 TPHWood / Biomass5.0 – 8.0 TPHPassenger Tires3.0 – 5.0 TPH4. Automation & Control Panel (Electrical)For modern infrastructure, these machines require robust automation to prevent mechanical failure and allow for centralized monitoring (such as SCADA integration)

Logic Controller: PLC-based control system (typically Siemens, Schneider, or Allen-Bradley).Auto-Reverse Mechanism: Integrated current sensors monitor motor load. If the blades jam on an uncrushable object (like solid steel blocks), the PLC instantly reverses the shafts for 3-5 seconds to clear the jam, then resumes forward motion. If it jams three consecutive times, the machine shuts down and triggers an alarm.Starters: Fully automatic Star-Delta starters or Variable Frequency Drives (VFDs) for smooth torque ramping.Safety Interlocks: Emergency Stop buttons on the panel and hopper; hopper tilt/open safety limit switches.Integration: Can be equipped with Modbus/Ethernet modules for remote SCADA monitoring of motor temperature, load parameters, and operational hours.5. Structural Fabrication & DimensionsThe housing must be heavily reinforced to absorb extreme torsional vibration.Chamber Housing: Machined from solid Mild Steel (MS) plates, typically 30 mm to 50 mm thick, heavily ribbed for structural integrity.Base Frame/Skid: Constructed from heavy ISMB (Indian Standard Medium Weight Beam) channels (e.g., ISMB 250/300) with anti-vibration mounting pads.Hopper: Flared MS hopper (customized to accept feed from conveyors, JCBs, or grapple cranes).These specifications may vary according to site conditions