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Programmatic Comparison · Engineering Brief
Side-by-side technical comparison of the ARJES Impaktor 850 and Terex TTS 620 twin-shaft shredders — drive power, throughput, service intervals, and TCO.
| Spec | ARJES Impaktor 850 | Terex TTS 620 |
|---|---|---|
| Drive concept | Dual-shaft asynchronous low-speed hydrostatic | Dual-shaft low-speed mechanical |
| Engine | Volvo Penta TAD 581 VE (Stage V) | Scania DC13 (Stage V) |
| Drive power (kW) | 340 | 265 |
| Drive power (HP) | 460 | 355 |
| Operating weight (kg) | 24 000 | 22 500 |
| Cutting torque (Nm) | 204 000 | 150 000 |
| Shaft speed (rpm) | 11–35 (variable) | 18–28 (fixed) |
| Hydrostatic service interval (hrs) | 500 | 250 |
| Shaft cassette swap time (hrs) | 2 (quick-change) | 72 (hardfacing repair) |
| Setup time (hrs) | 0.5 (SCU auto-calibration) | 1.5–2.0 (conveyor deployment) |
| Material | ARJES Impaktor 850 | Terex TTS 620 |
|---|---|---|
| Old wood / biomass | 26 – 52 t/h | 20 – 40 t/h |
| Green cuttings / biomass | 45 – 90 t/h | 35 – 60 t/h |
| Commercial waste | 15 – 32 t/h | 12 – 24 t/h |
| Reinforced concrete (with rebar) | On-demand shred | Not recommended |
The Impaktor 850 delivers 340 kW versus the TTS 620’s 265 kW from a near-identical operating weight, translating directly into higher torque reserves and faster recovery from stall events on contaminated feedstock.
ARJES hydrostatic drive requires 500-hour service intervals, double the TTS 620’s 250-hour mechanical-drive schedule — halving planned downtime over a 10 000-hour horizon.
ARJES shaft swaps complete in ~2 hours via the quick-change cassette system. The TTS 620 requires 72 hours of welding and hardfacing per shaft incident — a 36× improvement in production availability.
The Impaktor 850 is engineered to shred reinforced concrete with steel rebar on demand. Terex does not recommend rebar concrete for the TTS 620 due to catastrophic failure risk on the mechanical driveline.
For North American operators, Terex has densier dealer coverage and faster parts logistics in some regions. ARJES compensates with remote diagnostics and predictive shaft-maintenance scheduling.
Yes. Both machines sit in the 22–25 tonne twin-shaft shredder class and target C&D, biomass, and commercial waste applications. The Impaktor 850 offers 28% more drive power and 36% more cutting torque in the same footprint.
ARJES hydrostatic drive delivers roughly 50% lower maintenance cost over a 10 000-hour horizon, primarily due to 2× longer service intervals and quick-change shaft cassettes that eliminate 70+ hours of hardfacing repair per incident.
The Impaktor 850 is rated for reinforced concrete on demand. The Terex TTS 620 is not recommended for rebar concrete — its mechanical driveline is vulnerable to catastrophic failure under steel contamination.
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