When selecting a branch shredder, the core principles should be "model based on scenario, power based on branch diameter, and lifespan based on structure." Prioritize matching the maximum working branch diameter with sufficient power redundancy, and rigorously check the three key performance indicators: main shaft, bearings, and sheet metal.
Processing Capacity: Choose appropriate power and feed size based on daily workload.
Portability: For frequent movement, choose a model with wheels.
Noise and Emissions: Diesel engines are noisier; electric versions are more environmentally friendly but require power.
Check the core durable structure: The main shaft material must be 42CrMo or 45# tempered steel (for medium-sized machines with a diameter ≥120mm); bearings must be double-row self-aligning rollers (such as the 22300 series) and sealed; the frame and shredding chamber steel plate thickness must be ≥10mm (critical stress points), rejecting thin-plate spot welding.
Confirm blade and output requirements: Blades must be made of 65Mn/alloy steel (hardness HRC45–55) and support quick release; screen aperture should be selected as needed (3–12mm for composting, 10–30mm for covering); cutting type (spiral cutter disc) produces uniform chips suitable for covering, while hammer mill type produces powder quickly but is prone to caking.
