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Qingdao Puhua Heavy Industry Q32 Series Crawler Shot Blasting Machine Maintenance Guide - Ensure Efficient Processing of Small and Medium-sized Workpieces

17 / Jul . 2025



/Daily maintenance: basic operations to ensure continuous production/


/Key operations after the shift


Crawler cleaning: After each shift, remove the residual projectiles and metal chips in the crawler gap (focus on cleaning the accumulation at the bottom of the active roller) to avoid jamming the transmission mechanism.


Separator inspection: Check whether the vibrating screen is blocked. If the screen holes are blocked by more than one-fifth, use a wire brush to dredge them. If more than three holes are damaged, replace them immediately.


/Core Component Management


Track tension: Press the middle of the track daily. If the droop exceeds 3 cm, adjust the tension bolt (standard droop is 1-2 cm).


Shot blaster inspection: Check the blade wear through the observation window. If the wear on one side exceeds 2 mm or cracks appear, replace them in groups.


/Lubrication specification


ISO VG32 penetrating oil is dripped into the track drive chain every day, and high-temperature lithium-based grease (NLGI grade 2) is added to the roller bearing every week.


/Periodic deep maintenance plan/


Period Maintenance focus Operation specification

Weekly 1. Pulse backflush of dust filter cartridge Compressed air 0.5 MPa, single backflush ≤ 10 seconds

2. Vibration detection of shot blaster Vibration value exceeds 4 mm per second and needs to be stopped for calibration

Monthly 1. Tighten the terminals of the electrical cabinet Torque wrench is reinforced according to the standard of 3.6 Nm

2. Track deviation correction Edge and baffle gap ≤ 3 mm

Quarterly 1. Overhaul of shot circulation system Repair welding of cyclone separator with wear exceeding 30%

2. Safety device test Emergency stop button response time ≤ 1 second


/High frequency fault handling solution/


/Uneven workpiece cleaning


Cause: Uneven shot flow or abnormal track speed


Handling steps:


Calibrate the shot blaster flow valve opening (deviation ≤ one tenth)


Detect the inverter output frequency (standard 35-45 Hz)


/Track slippage


Cause: Drive roller rubber layer wear or insufficient tension


Solution:


Rubber layer thickness < five millimeters Replace the drive roller


Tension cylinder pressure adjusted to zero point four MPa




/Puhua Heavy Industry Special Service/


Production line Online support

Provide a collaborative solution for multiple online assembly lines to match the customer's production rhythm (such as 15 pieces/minute)

Global spare parts network

Mexico and Vietnam warehouses always have 12 types of vulnerable parts such as special crawlers and shot blasting blades (urgent delivery within 48 hours)

Intelligent maintenance system

Optional operation monitoring module: real-time warning of abnormal projectile flow and bearing temperature rise failure

Core value of equipment

Life improvement: crawler chain plates adopt manganese steel carburizing process, and the wear resistance is twice that of ordinary materials

Energy-saving advantage: energy consumption is 30% lower than that of equipment of the same level (actual power consumption per ton of workpiece is ≤ 8 degrees)


Q32 crawler shot blasting machine