Installing Dual Shaft Shredder Blades: Comprehensive Step-by-Step Guide

1.Safety Prep:

Cut off main power, lock out/tag out (LOTO), and release hydraulic system pressure. Prepare specialized tools (hydraulic puller, torque wrench), compliant replacement blades, and PPE (cut-resistant gloves, safety goggles).

2.Removing Old Blade:

Clean accumulated material/rust from the blade housing. Use a hydraulic puller with staged pressure or heat-assisted disassembly. Keep the blade level during hoisting. Post-removal, inspect keyway/rotor shaft wear, remove burrs, and ensure smooth mating surfaces.

3.Installing New Blade:

Apply lubricant to the blade’s working surface and thread-locking compound to the keyway. Use laser alignment to verify blade end-face runout compliance. Tighten bolts symmetrically in stages to specified torque. Adjust blade-liner gap to proper range.

4.Acceptance Testing:

Run unloaded: Monitor bearing temperature, vibration, and noise. Gradually increase to full load: Periodically check blade tightness and operational stability.

Blade disassembly

1. Remove the fastening screws and dismantle the feeding hopper.
2.Remove the fastening screws and disassemble the motor.
3.Remove the fastening screws and disassemble the gearbox.
4. Remove the fastening screws and sequentially disassemble the bearing seat and other components.
5.Lift the knife roller vertically upwards.
6.Wipe the new blade.
7. Install a new tool (lubricating oil can be applied to the spindle).
8.After the tool replacement is completed, please install the tool in reverse according to the above steps.

Operation video