I. Features
1.A new product independently developed by digesting and absorbing foreign advanced technologies.
2.Small axial dimension, compact, lightweight and beautiful structure.
3.Direct installation, no need for installation accessories.
4.Oil-free (oil-lubricated is also available) lubrication, avoiding oil-gas pollution, and the oil mist lubricator can be omitted.
II. Graphical Symbols and Appearance
QGY (Standard Type)
QGY (D) (Front Spring Single-acting Standard Type)
QGYR (With Switch Type)
QGYR (D) (Front Spring Single-acting With Switch Type)
Main Technical Parameters of Cylinder
| Model | QGY,QGYR | QGY(D),QGYR(D) |
| Cylinder Bore (mm) | 20,25,32,40,50,63,80,100,
125 | 20 | 25 | 32 | 40 | 50 | 63 | 80 | 100 | φ125 |
| Proof Pressure (bar) | 15 |
| Working Pressure (bar) | 1～10 | 2～10 |
| Operating Temperature Range (℃) | -25 ～ +80 (under non-freezing conditions) |
| Maximum Stroke (mm) | Φ20~Φ25:30;
Φ32~Φ125:50 | Φ20~Φ25:30;Φ32~Φ40:35;Φ50~Φ100:40;φ125:50 |
| Maximum Stroke (mm) | Purified dry compressed air |
| Working Medium | Not required (oil-lubricated is also available) |
| Spring for Maximum Stroke | Initial Reaction Force (N) |
| 14.5 | 22.8 | 32 | 51.8 | 72 | 83.2 | 115.5 | 128.7 | 488 |
| Final Reaction Force (N) |
| 48.1 | 57 | 102 | 142.5 | 216 | 211.2 | 247.5 | 260.7 | 1442 |
Model and Main Technical Parameters of Switch
| Code | Model | Applicable Bore | Operating Voltage Range | Operating Current Range | Maximum Contact Capacity |
| V | FD-72R | Φ20~Φ100 | 5～240V DC/AC | 100mA(max) | 10W |
Outline Drawing of QGY Thin Cylinder
Bore Range: Φ20～Φ25
Bore Range: Φ32～Φ125
Outline Drawing of QGY (D) Front Spring Single-acting Thin Cylinder
Bore Range: Φ20～Φ25
Bore Range: Φ32～Φ125
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,SMS,RSMT,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 |
Product Tags:
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QGY Compact Air Cylinder heavy type Direct installation Images
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