Product Manual for YD06-010 20-Tonne Hydraulic & Air Floor Press (20TONNE HYDRAULIC AND AIR FLOOR PRESS/20T CE HYDRAULIC SHOP PRESS)

I. Product Specifications

II. Product Details

III. Application Scenarios

1. Heavy Machinery Component Pressing Scenario: Suitable for press forming and shaping of thick steel plates and alloy components with a thickness of 25-40 mm. For example, in heavy machinery factories, 20-ton high pressure can be used to press thick steel plates into specific shapes of large equipment racks and mining machinery bases. The pneumatic pump quickly feeds materials to reduce processing waiting time, and manual pressure application ensures forming accuracy, improving the mass production efficiency of heavy components.
2. Automotive Heavy Chassis Maintenance Scenario: Used for straightening and repairing heavy components such as automotive chassis and suspension systems. In auto repair shops, for deformed chassis longitudinal beams and suspension crossbeams caused by collisions, the pneumatic pump can quickly position the ram to the deformed position, and then manual pressure application outputs high pressure for straightening, avoiding the cost of component replacement and ensuring that the straightening accuracy meets safety standards.
3. Large Bearing and Bushing Press-Fitting Scenario: For interference fit assembly of heavy bearings with a diameter of more than 100 mm, large bushings, and machine bodies. In construction machinery maintenance stations, the pneumatic pump can quickly push the bearing to the installation position, and then manual supplementary pressure completes the tight press-fitting, avoiding the time-consuming and labor-intensive nature of pure manual operation, and accurately controlling the pressure to prevent machine body damage.
4. Precision Heavy Part Calibration Scenario: Used for calibration of large precision molds, machine tool guide rails, and other components. In mold manufacturing factories, high-pressure calibration can be performed on large stamping molds deformed after long-term use. The pneumatic pump quickly adjusts the ram position, and manual pressure application accurately controls the calibration force, ensuring the mold accuracy is restored and guaranteeing the quality of subsequent stamped parts.

IV. Frequently Asked Questions (FAQs)

(I) What Causes the Pneumatic Pump to Fail to Push the Ram, While Manual Pressure Application Works Normally?

1. First, check if the air source pressure meets the standard. The equipment's pneumatic system requires a standard air pressure of 0.6-0.8 MPa. If the air pressure is too low, adjust the air compressor output pressure to the normal range—insufficient air pressure will lead to insufficient power of the pneumatic pump.
2. Inspect the pneumatic pipeline for blockage or air leakage, focusing on the air pipe joints and pneumatic valve connections. If blocked, blow through the pipeline with compressed air; if there is air leakage, replace the air pipe or gasket to ensure stable air source delivery.
3. If the air source and pipeline are normal, the piston inside the pneumatic pump may be worn. Disassemble the pneumatic pump to check the piston seal. After replacing the aged seal, apply special grease to restore the pushing capacity of the pneumatic pump.

(II) How to Handle When Manual Pressure Application Fails to Reach the 20,000 kg Rated Pressure, While the Pneumatic Stage Works Normally?

1. Check the oil level of the hydraulic oil tank. If the oil level is lower than the minimum scale line, add 46# anti-wear hydraulic oil to the normal level—insufficient oil will cause the pressure to fail to reach full load during manual pressure application.
2. Check the hydraulic pipeline for leakage, focusing on the joints and seals of the manual pressure oil circuit. If there is oil leakage, replace the seal and tighten the joint to prevent hydraulic oil loss from affecting the pressure.
3. If the above operations are ineffective, the valve core of the manual pressure valve may be worn. Disassemble the valve core and grind it for repair, or replace it with a valve core of the same model to ensure good sealing of the valve core and normal pressure transmission.

(III) What to Do If the Ram Gets Stuck During Movement, Occurring in Both Pneumatic Pushing and Manual Pressure Application Stages?

1. Check the ram guide rail surface for wear or impurities. Wipe the guide rail with alcohol-soaked cotton, apply lithium-based grease after removing impurities. If there are slight scratches on the guide rail, polish it smooth with fine sandpaper to reduce friction resistance.
2. Check the fit clearance between the ram and the oil cylinder. If the clearance is too small and causes jamming, slightly grind the outer wall of the ram with professional tools, and adjust the fit clearance to the range of 0.05-0.1 mm to ensure smooth movement of the ram.
3. Inspect the hydraulic & air linkage system for air. Open the hydraulic oil tank cover, repeatedly operate the pneumatic pump and manual handle to discharge the air in the system—residual air will cause the ram to move stuck and uneven force.

(IV) How to Troubleshoot Slight Abnormal Noise from the H-Frame During Equipment Operation, While Pressure Output Is Normal?

1. Check if the frame connecting bolts are loose. Use a torque wrench to tighten the bolts at all parts of the frame one by one—loose bolts will cause slight displacement of the frame during high-pressure operations, resulting in abnormal noise.
2. Check if there is wear at the connection between the frame and the worktable. If wear causes excessive clearance, insert a thin metal gasket at the connection to reduce relative friction between the frame and the worktable.
3. Confirm whether the equipment is placed horizontally. Use a level to detect the equipment base. If tilted, insert adjustment gaskets under the base to keep the equipment horizontal, avoiding abnormal noise caused by uneven force on the frame. Long-term tilting may also cause frame deformation, affecting the service life of the equipment.