Product Specification

Product Manual for YD06-011 20-Ton Air/Hydraulic Press (20 TON AIR/HYDRAULIC PRESS WITH GAUGE)

I. Product Specifications

II. Product Details

III. Application Scenarios

1. Automotive Component Press-Fitting Scenario: Suitable for precision press-fitting of automotive gearbox bearings, drive axle bushings, and other components. In auto repair shops, the pneumatic pump can quickly push the bearing to the installation position, and then the hydraulic system is activated to output stable pressure for press-fitting. The pressure gauge monitors pressure in real time, avoiding damage to the gearbox housing from overpressure while ensuring the fitting accuracy between the bearing and bushing, reducing the risk of subsequent failures.
2. Metal Plate Shaping Scenario: Used for bending, flanging, and shaping of steel plates and iron plates (20-35mm thick). In hardware processing plants, the 20-ton pressure can bend steel plates into mechanical brackets and equipment guardrails with specific angles. The 100-970mm working range adapts to workpieces of different heights, and the 490mm-wide worktable can hold multiple small plates at the same time, improving batch processing efficiency.
3. Heavy Machinery Maintenance & Straightening Scenario: Applied to straighten and repair deformed components of agricultural machinery and construction machinery (e.g., agricultural machinery drive shafts, construction machinery connecting rods). In agricultural machinery repair stations, the deformed component is fixed on the worktable, the pneumatic pump quickly positions the ram to the deformed point, and then hydraulic pressure is applied to output high pressure for straightening. This avoids the high cost of component replacement while ensuring the mechanical properties of the straightened component meet standards.
4. Large Hardware Assembly Scenario: Used for press-fitting assembly of large hardware frames and steel structure connectors. In steel structure processing plants, stable pressure can be applied to the spliced hardware frame to ensure tight fitting of connectors and improve the overall firmness of the frame. The air-hydraulic linkage system not only ensures assembly efficiency but also precisely controls pressure through the pressure gauge, preventing frame deformation from overpressure.

IV. Frequently Asked Questions (FAQs)

(I) What to Do If the Pneumatic Pump Fails to Start and the Ram Shows No Movement?

1. First, check if the air source connection is normal: Confirm whether the pneumatic pipeline connector is plugged tightly and if the air compressor output pressure reaches 0.6-0.8MPa (standard air pressure for the device's pneumatic system). If the air pressure is insufficient, adjust the air compressor pressure to the normal range; if the pipeline is loose, re-plug it tightly and check for air leakage.
2. Inspect if the pneumatic switch is faulty: Observe if there is an air flow sound when pressing the pneumatic switch. If not, use a multimeter to test the on-off status of the switch. If the switch is damaged, replace it with an original pneumatic switch of the same model to avoid circuit or air circuit faults caused by using incompatible accessories.
3. If the air source and switch are normal, the internal part of the pneumatic pump may be blocked: Disconnect the air source, disassemble the air inlet filter of the pneumatic pump, clean the filter impurities. If the filter is damaged, replace it, then reinstall and test whether the pneumatic pump returns to normal.

(II) Why Is the Press Processing Effect Poor (e.g., Loose Press-Fitting) Even Though the Pressure Gauge Shows Normal Pressure?

1. Check if the contact between the ram and the workpiece is tight: If there is oil or impurities on the surface of the ram or workpiece, wipe it clean with alcohol-soaked cotton; if the ram surface is worn and deformed, slightly polish and repair it with sandpaper to ensure full contact between the ram and the workpiece for uniform pressure transmission.
2. Confirm whether the worktable is level: If the worktable is tilted, pressure will concentrate on the local part of the workpiece. Use a level to test the worktable, and insert adjustment gaskets under the base to keep the worktable level, avoiding uneven pressure distribution.
3. Check the status of hydraulic oil: If the hydraulic oil has been used for too long (more than 6 months) or mixed with impurities, it will reduce the pressure transmission efficiency of the hydraulic system. Replace it with 46# anti-wear hydraulic oil, and clean the hydraulic oil tank and filter to restore the performance of the hydraulic system.

(III) How to Handle Abnormal Vibration and Slight Abnormal Noise During Device Operation?

1. Check the fixing condition of the device base: If the base is not fixed or the fixing bolts are loose, tighten the base bolts one by one with a wrench. If the ground is uneven, insert anti-slip rubber pads between the base and the ground to enhance device stability and reduce vibration.
2. Inspect the fit between the ram and the guide rail: If the guide rail is insufficiently lubricated, it will cause friction noise when the ram moves. Apply lithium-based grease; if there are scratches or wear on the guide rail surface, polish it smooth with fine sandpaper. Replace the guide rail if wear is severe to avoid intensified vibration.
3. Confirm whether the workpiece is placed in the center: If the workpiece is not placed in the center of the worktable, uneven force on the device during processing will cause vibration. Adjust the workpiece position to ensure the pressure application point is in the central area of the worktable, reducing the force deviation of the machine body.

(IV) What to Do If the Cylinder Stroke Fails to Reach the Rated 120mm and the Ram Movement Distance Is Insufficient?

1. Check the oil level of the hydraulic oil tank: If the oil level is lower than the minimum scale line, insufficient hydraulic oil supply will limit the cylinder stroke. Add 46# anti-wear hydraulic oil to the normal liquid level. Be careful not to exceed the maximum scale line to prevent oil spillage.
2. Inspect the hydraulic pipeline for blockage: Focus on checking the oil inlet and return pipelines of the cylinder. If blocked by impurities, disassemble the pipeline and blow it through with compressed air, or replace the hydraulic oil filter to ensure smooth oil flow.
3. If the above operations are ineffective, the cylinder seal may be aged: Disassemble the cylinder, replace the aged seal ring (nitrile rubber material is recommended), and apply hydraulic oil for lubrication during installation to avoid seal ring damage and restore the normal stroke of the cylinder.