I.Features
1.This is a traditional product of our company with a long production history. Through continuous improvement, it is reliable and durable.
2.It has a wide bore diameter range from Φ32 to Φ400, and the stroke can be selected arbitrarily within the maximum range. Cylinders with extended strokes can also be customized through negotiation.
3.For cylinders with a bore diameter of Φ32～Φ100, the front and rear end caps are made of aluminum alloy, and the cylinder barrel is a precision aluminum tube with the inner hole treated by hard anodic oxidation. For cylinders with a bore diameter of Φ125～Φ400, the front and rear end caps are made of cast iron, and the cylinder barrel is a precision seamless steel tube with the inner hole hard chrome plated.
4.There are various types of installation accessories and connectors, meeting various application requirements.
II. Graphical Symbols and Appearance
Cylinder without Cushion
Cylinder with Cushion
III.Model
IV. Main Technical Parameters
| Model |
QGA QGB |
QGAI QGBI |
| Bore Diameter (mm) |
32 |
40 |
50 |
63 |
80 |
100 |
125 |
160 |
200 |
400 |
250 |
320 |
| Maximum Stroke (mm) |
500 |
800 |
1000 |
2000 |
| Operating Pressure (bar) |
1.5～8 |
| Proof Pressure (bar) |
12 |
| Operating Temperature Range (℃) |
-25~+80 (under non-freezing conditions) |
| Working Medium |
Purified compressed air containing oil mist |
V. Outline and Installation Dimensions
Basic Type Cylinder
QGA, QGAⅠ Series
QGA, QGBⅠSeries
- Cylinder with Mounting Accessories
Single Trunnion Type Cylinder (Type E)
Double Trunnion Type Cylinder (ES Type)
Single Trunnion Mounted Cylinder (EZ Type)
Double Trunnion Mounted Cylinder (ESZ Type)
Rear Flange Type Cylinder (F Type)
Front Flange Type Cylinder (FQ Type)
Intermediate Hinge Shaft Type Cylinder (Type Z)
Foot Bracket Type Cylinder (Type J)
Intermediate Hinge Shaft Support Type Cylinder (Type ZZ)
- Cylinder with Connection Accessories
Tube - equipped Connector (Type L₁)
Rod - equipped Connector (Type L₂)
Fork - equipped Connector (Type L₃)
Rod - Fork Combined Connector (Type L₄)
Fork - Rod Combined Connector (Type L₅)
Tube Connector
Rod Connector
Fork Connector
Q: Could you offer the free samples ?
A: Yeah, but it depends products, Pls contact us ina@pneuhydr.com or whatsapp 0086 15168536055
Q: What ' s your business scope ?
A: Our business scope is service of exporter automation parts with full container, and sell air cylinder , air source treatment , solenoid valve , air valve, motorize valve , Brass valve, hydraulic valve, hydraulic cylinder, air and oil fitting, pressure gauge etc .
Q: What types of products you can make ?
A: We can make many kinds of stainless steel, brass ,aluminum materials processing .like high pressure Valve / solenoid valve / electric valve / water valve/pneumatic valve/air cylinder/hydraulic valve/hydraulic accumulator products and so on .
Q: Can the product be made with our logo and brand ?
A: Yes , of course , we can make . we are OEM supplier for years and professional to make . But you need give us the authorization if it is possible .
Q:Can you provide original famous pneumatic and hydraulic,instruments brand goods ?
A: Yes,We can supply like Festo,Smc,Ckd,Burket,Hydac,Rexroth,Siemens,Rosemount,Marsh ,Endress+Hauser etc.
Q: Is there a warranty available?
A: Yes, normally products is one year quality guarantee.
Q: Is the connector in British or Metric system? What is the difference between PT, NPT, and G threads?
A: The G thread is cylindrical and does not seal itself, requiring additional gaskets to prevent leakage. PT and NPT are conical, and the internal and external threads become tighter and tighter when tightened. Sealing is achieved through the deformation of the threads, and sealant or tape is usually used in conjunction to enhance the sealing effect
G-thread is a cylindrical straight pipe used for non sealed connections; PT thread is a conical tube that relies on the deformation and sealing of the thread itself; NPT is also a conical tube with a tooth profile angle of 60 degrees, mainly used in North America
Q: How to convert pressure units: MPa, bar, psi, kg/cm ²?
A: 1MPa=10bar≈145psi≈10kg
Q:What usually causes the burnout of solenoid valve coils?
A:Incorrect voltage and hz, frequent switching, pilot head entering liquid,valve core and spring problem,environment hot,heavy vibration etc.
Q: What should be noted for pneumatic components in high temperature or extremely cold environments?
| Focus Point |
High Temperature Environment Countermeasures |
Extreme Cold Environment Countermeasures |
| Seals |
Fluororubber, PTFE |
Low-temperature nitrile, silicone rubber, polyurethane |
| Lubrication |
High-temperature synthetic grease (low volatility) |
Low-temperature grease (low pour point, low viscosity) |
| Air Supply Treatment |
Strengthen cooling, efficient water removal |
Ultra-low dew point drying (refrigeration + adsorption type), heat tracing |
| Metal Components |
Reserve expansion clearance |
Select materials with low-temperature toughness, prevent leakage due to cold shrinkage |
| Control Components |
High heat-resistant grade coils, heat dissipation, low power consumption |
Install insulation boxes, local heating, prevent cold condensation |
| Installation |
Keep away from heat sources, add heat insulation plates |
Avoid exposure to wind and snow, wrap with thermal insulation materials |
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