Raising Cylinder, Telescoping Cylinder & Balance Cylinder

1

Y(3)45/345

Cylinder barrel: High-strength 45# seamless steel; Piston rod: Chromium-plated alloy steel; Seal ring: Nitrile rubber (NBR) with high oil resistance

1. Excessive lateral load during lifting leading to eccentric wear of piston rod; 2. Contaminated hydraulic oil causing abrasive wear of seal components

1. Regularly check and adjust the lifting guide mechanism to ensure uniform force on the piston rod; 2. Install a high-precision oil filter in the hydraulic system and replace the hydraulic oil according to the equipment maintenance cycle

2

Y(3)59/370

Cylinder barrel: 27SiMn alloy steel with high toughness; Piston rod: Stainless steel 304 with hard chrome plating; Seal ring: Fluororubber (FKM) for high-temperature resistance

1. Frequent rapid start-stop during operation resulting in impact damage to the cylinder bottom; 2. Long-term exposure to humid environments causing corrosion of the cylinder barrel

1. Equip a buffer valve in the hydraulic circuit to reduce impact force during start-stop; 2. Apply anti-corrosion coating to the cylinder surface and regularly inspect the coating integrity

3

Y(3)74/446

Cylinder barrel: 40Cr alloy steel with quenching and tempering treatment; Piston rod: Alloy steel 40CrNiMoA with induction hardening; Seal ring: Polyurethane (PU) with excellent wear resistance

1. Overload lifting exceeding the rated load causing deformation of the cylinder barrel; 2. Improper lubrication leading to dry friction between piston and cylinder barrel

1. Strictly follow the rated load parameters during operation and install an overload protection device; 2. Inject high-temperature resistant lubricating grease into the cylinder at regular intervals, ensuring uniform lubrication of the friction surface

4

Y(3)127/446

Cylinder barrel: High-pressure seamless alloy steel; Piston rod: Chromium-plated 42CrMo alloy steel; Seal ring: Composite material of FKM and PTFE for extreme working conditions

1. High-frequency vibration during heavy-load operation causing fatigue damage to the cylinder rod; 2. Pressure fluctuation in the hydraulic system exceeding the cylinder's pressure-bearing limit

1. Install a vibration damping pad at the cylinder connection and check the tightness of fasteners regularly; 2. Equip a pressure relief valve in the hydraulic system to stabilize the working pressure within the rated range

1

Y(3)45/345

Telescopic stages: 45# steel with precision machining; Piston rod: Chromium-plated alloy steel; Guide sleeve: Copper alloy with self-lubricating property; Seal ring: NBR with good elasticity

1. Uneven load distribution among multi-stage telescopic stages causing local wear; 2. Foreign matter entering the gap between telescopic stages leading to scratch damage

1. Regularly inspect the synchronization of multi-stage telescopic motion and adjust the hydraulic flow; 2. Install a dust cover at the cylinder port and clean the telescopic surface before operation

2

Y(3)59/370

Telescopic stages: 27SiMn alloy steel with high strength; Piston rod: Stainless steel 316 with corrosion resistance; Guide sleeve: Aluminum bronze alloy; Seal ring: FKM for high-temperature and high-pressure resistance

1. Rapid telescopic motion leading to impact between stages and wear of the end buffer; 2. Long-term exposure to outdoor environment causing oxidation of the telescopic surface

1. Control the telescopic speed through the flow control valve to avoid rapid impact between stages; 2. Apply anti-oxidation protective oil to the telescopic surface regularly, especially in rainy and snowy environments

3

Y(3)74/446

Telescopic stages: 40Cr alloy steel with quenching treatment; Piston rod: Chromium-plated 42CrMo alloy steel; Guide sleeve: PTFE composite material; Seal ring: PU with excellent wear resistance

1. Lack of lubrication between telescopic stages causing dry friction and wear; 2. Hydraulic oil leakage leading to insufficient driving force and abnormal friction of stages

1. Inject special lubricating oil for telescopic cylinders into the stage gaps regularly; 2. Inspect the seal ring and oil pipe connections regularly, replacing damaged seals in a timely manner

4

Y(3)127/446

Telescopic stages: High-pressure seamless alloy steel; Piston rod: Nitrided alloy steel with high surface hardness; Guide sleeve: Self-lubricating bearing alloy; Seal ring: Composite seal of FKM and metal skeleton

1. Overload operation causing bending deformation of the telescopic stages and wear of the guide sleeve; 2. Vibration during operation leading to loosening of stage connection parts and abnormal wear

1. Strictly abide by the rated load and avoid overloading during telescopic operation; 2. Check the tightness of stage connection bolts regularly and retighten them if loose, and install anti-vibration washers

1

Y(3)45/345

Cylinder barrel: 45# seamless steel with precision honing; Piston rod: Chromium-plated alloy steel; Pressure relief valve core: Hardened alloy steel; Seal ring: NBR with high oil resistance

1. Frequent pressure adjustment leading to wear of the pressure relief valve core; 2. Impurities in the hydraulic oil causing blockage and wear of the oil passage

1. Avoid frequent and drastic pressure adjustments, and regularly calibrate the pressure relief valve; 2. Use hydraulic oil that meets the specification, and replace the oil filter element regularly to keep the oil passage clean

2

Y(3)59/370

Cylinder barrel: 27SiMn alloy steel with high toughness; Piston rod: Stainless steel 304 with corrosion resistance; Pressure sensor: High-precision alloy steel component; Seal ring: FKM for high-temperature resistance

1. Long-term high-pressure holding leading to fatigue wear of the cylinder barrel; 2. Environmental temperature changes exceeding the cylinder's working temperature range causing seal aging

1. Arrange reasonable operation intervals to avoid long-term continuous high-pressure holding; 2. Install a temperature control device in the working environment to keep the temperature within the range of -20℃ to 80℃

3

Y(3)74/446

Cylinder barrel: 40Cr alloy steel with quenching and tempering treatment; Piston rod: Chromium-plated 42CrMo alloy steel; Balance valve: Alloy steel with precision machining; Seal ring: PU with excellent wear resistance

1. Unstable load during operation causing impact wear of the piston; 2. Loosening of the balance valve adjusting bolt leading to abnormal pressure and wear

1. Ensure the load is stable before starting the cylinder, and avoid sudden load changes; 2. Check the balance valve adjusting bolt regularly, lock it with a lock nut after adjustment, and apply anti-loosening agent

4

Y(3)127/446

Cylinder barrel: High-pressure seamless alloy steel; Piston rod: Nitrided alloy steel with high surface hardness; Safety valve: Alloy steel with explosion-proof performance; Seal ring: Composite seal of metal and FKM

1. Overpressure caused by load overweight leading to wear of the safety valve; 2. Vibration during operation causing damage to the piston seal and internal leakage

1. Install a load sensor to monitor the load in real time, avoiding overload operation; 2. Install a vibration absorber at the cylinder base and check the piston seal regularly for replacement

1

HSG7035

Cylinder barrel: 45# seamless steel with precision honing; Piston rod: Chromium-plated alloy steel; Piston: Cast iron with wear-resistant coating; Seal ring: NBR with good oil resistance and elasticity

1. Long-term operation at high speed causing wear of the piston and cylinder barrel; 2. Improper installation leading to eccentric load and wear of the piston rod

1. Control the operation speed within the rated range and install a speed governor if necessary; 2. Ensure the cylinder is installed horizontally or vertically as required, and calibrate the coaxiality with the driving mechanism