Single Shaft Shredder — SS 304 hardened blades, low-noise, gravity feed.
Single-shaft, low-speed shredder with hydraulically-pushed feed (optional), interchangeable screen mesh and PLC-controlled auto-reverse on overload. Fabricated for kitchen, garden, horticulture and food-processing residue pre-treatment ahead of a K-Drum or K-Thermo composter.
Single Shaft Shredder spec sheet
| Cutting system | |
| Shaft configuration | Single shaft + fixed counter blade |
| Rotor diameter | 250 / 300 / 350 / 400 mm (model-dependent) |
| Rotor speed | 60 – 120 RPM (low-speed for low noise + low fines) |
| Knife configuration | Square knives, 4-side rotatable, replaceable |
| Knife MOC | SS 304 hardened / DC53 / D2 tool steel (option) |
| Counter blade MOC | SS 304 hardened, replaceable |
| Number of knives | 16 / 24 / 32 / 48 (size-dependent) |
| Cutting chamber size | 500 × 600 / 600 × 800 / 700 × 900 / 800 × 1000 mm |
| Throughput & output | |
| Throughput | Up to 500 kg / hr (kitchen + garden waste, 25% moisture) |
| Output particle size | 20 – 80 mm (interchangeable screen mesh) |
| Available screen sizes | 30 / 40 / 50 / 60 / 80 mm |
| Material handled | Kitchen waste, garden waste, leaves, prunings, vegetables, fruit, food-processing residues, light wood |
| Material NOT recommended | Stones, metal scrap, large bones, hard plastics > 12 mm thick (route to dual-shaft instead) |
| Drive & power | |
| Motor power options | 7.5 / 11 / 15 / 22 kW (size-dependent) |
| Motor efficiency class | IE2 / IE3 (premium efficiency) |
| Power supply | 3-phase, 415 V ± 10%, 50 Hz |
| Gearbox | SEW / Bonfiglioli planetary or helical, oil-bath lubricated |
| Bearings | SKF / FAG sealed deep-groove, greased for life |
| Drive coupling | Flexible coupling, shock-absorbing |
| Feed & discharge | |
| Feed type (standard) | Top hopper, gravity feed |
| Feed type (optional) | Hydraulic pusher (4–6 ton ram) — for stiff materials & consistent feed |
| Hopper capacity | 0.3 – 1.0 m³ |
| Hopper opening | 500 × 600 / 600 × 800 mm (size-dependent) |
| Discharge | Bottom chute (standard) or belt conveyor Optional |
| Control & safety | |
| Control system | PLC-based with HMI |
| Reversing function | Auto-reverse on torque overload (PLC-managed) |
| Emergency stop | Mushroom-head E-stop, single press shutdown |
| Safety interlock | Hopper lid switch — motor cut-out when open |
| Thermal protection | Overload relay; auto-restart after cool-down |
| Soft-start drive | Optional — VFD soft-start; reduces inrush current |
| Construction | |
| Frame | MS welded box construction, epoxy-painted (RAL 6005 forest green standard) |
| Rotor housing | Heavy-gauge MS plate, internal wear plates (replaceable) |
| Wear plates | SS 304 / hardox 400 (high-wear application option) |
| Mounting | Floor-mounted on adjustable feet OR castor-mounted (size-dependent) |
| Dimensions & weight | |
| Footprint (small / 7.5 kW) | ~1500 × 1100 × 1800 mm (LxWxH) |
| Footprint (large / 22 kW) | ~2500 × 1600 × 2400 mm (LxWxH) |
| Weight | 800 – 2500 kg (size-dependent) |
| Operating environment | |
| Noise level | < 85 dB(A) at 1 m (low-speed design) |
| Ambient temperature | 0 – 50 °C |
| Operating duty | S1 (continuous) up to 8 hr/day |
| Indoor / outdoor | Both; outdoor needs canopy |
| Warranty & service | |
| Standard warranty | 1 year comprehensive (excl. wear parts: knives, counter blade) |
| Engineer response | On-site within 24 – 48 hours |
| AMC available | Yes — fixed AMC (response only) or comprehensive (parts + labour) |
| Spare parts stock | Knives, counter blade, bearings, motor — held at Manesar plant for next-day dispatch |
Best for these applications
🍽 Kitchen / canteen waste
Hotels, hostels, mess halls, hospitals, IT campuses. Pre-treat to 20–50 mm before composter loading.
🌿 Garden & horticulture
Parks, golf courses, gated communities. Handles leaves, grass, prunings up to 30 mm thick.
🥗 Food processing residues
Vegetable peels, fruit pulp, dairy curd, brewery spent grain. SS 304 contact = food-grade compliant.
Common questions
When should I pick Single Shaft over Dual Shaft?
Single Shaft is right for soft / fibrous / kitchen-grade waste at up to 500 kg/hr. Dual Shaft is needed for woody material, MSW with contamination risk, hard plastics, larger throughput (up to 3000 kg/hr) and where auto-reverse jam clearing matters most. If your input has any chance of containing stones, metal or hard items, go Dual.
Can it be inbuilt into K-Drum / K-Thermo?
Yes. Most K-Drum and K-Thermo composters above 75 kg/day can be ordered with an inbuilt single-shaft shredder mounted on top. This integrates loading + shredding + composting into one footprint and removes manual transfer between machines.
What's the noise level — can it run inside a building?
Below 85 dB(A) at 1 m (well within OSHA 8-hr exposure limit). The low-speed (60–120 RPM) design is specifically chosen for indoor / institutional use. For sensitive environments (hospitals, schools), an acoustic enclosure is available — drops noise another 10–15 dB.
Knife life expectancy?
SS 304 hardened knives: typically 8–12 months at normal kitchen + garden duty. Each knife is 4-side rotatable — flip when one edge dulls. Hardox / DC53 upgrade extends life 30–50% for harsher inputs. Replacement kits stocked at Manesar.
What about hydraulic pusher?
Optional hydraulic ram (4–6 ton) helps with stiff fibrous material that doesn't drop into the rotor on gravity feed alone — useful for woody garden prunings, palm fronds, dense food-processing waste. Adds a small CapEx but eliminates a common operator complaint.
What's the typical CapEx?
Indicative ex-Manesar (2026): 7.5 kW / 200 kg/hr ~₹3.5–4.5 L · 11 kW / 350 kg/hr ~₹5–6 L · 22 kW / 500 kg/hr ~₹7.5–9 L. Add hydraulic pusher (~₹1.5 L), VFD soft-start (~₹0.6 L), discharge conveyor (~₹1–2 L) as optional.
Need a shredder spec for your tender?
Send us your input material profile and we'll build a BOQ-ready shredder spec.
Manufactured to dispatch in 6–14 weeks
Standard configurations from stock-cycle production; custom builds against site DPR. Every machine ships with 1-year warranty + AMC option from year 2.