DFM-20-80-B-PPV-A-GF - Uncategorized Festo - Free user manual and instructions
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| Product type | Pneumatic linear drive with slide |
| Manufacturer | Festo |
| Model | DFM-20-80-B-PPV-A-GF |
| Piston diameter | 20 mm |
| Stroke length | 80 mm |
| Guide type | Ball-bearing slide guide |
| End-position cushioning | Adjustable pneumatic cushioning (PPV) |
| Position sensing | Prepared for proximity switches (T-slots) |
| Operating pressure | 1 to 10 bar |
| Ambient temperature | -20 to +80 °C |
| Theoretical force at 6 bar | 188 N (push) / 141 N (pull) |
| Pneumatic connection | G1/8 |
| Weight | Approximately 0.9 kg |
| Material | Anodized aluminium and hardened steel |
| Mounting method | Through-holes and threaded holes |
| Corrosion protection | GF (corrosion-resistant design) |
| Adjustable cushioning screws | At both end caps |
| Maximum operating frequency | Up to 1.5 Hz depending on load and stroke |
| Air quality | Filtered and unlubricated (dry) recommended |
| Repeatability | ±0.02 mm with sensor feedback |
Frequently Asked Questions - DFM-20-80-B-PPV-A-GF Festo
What does the model code DFM-20-80-B-PPV-A-GF mean?
The DFM-20-80-B-PPV-A-GF is a pneumatic linear drive from Festo. "DFM" designates a slide drive with integrated guide; "20" is the piston diameter (20mm); "80" is the stroke length (80mm); "B" indicates a basic variant with standard piston rod; "PPV" means adjustable end-position cushioning with proximity sensor preparation; "A" denotes the standard armature for mounting, and "GF" indicates a corrosion-resistant design suitable for demanding environments.
How do I connect the compressed air supply?
Use the two G1/8 pneumatic ports located on the cylinder end caps. Connect the supply line to one port and, if needed, the other as exhaust. Install a 5/2-way solenoid valve to control the extension and retraction. Ensure the supply pressure does not exceed 10 bar.
How do I adjust the end-position cushioning?
At each end of the cylinder there is an adjustment screw. Turn it clockwise to increase damping and counterclockwise to decrease damping. Set it so the piston stops smoothly without bouncing, especially at high speeds and payloads.
Can I detect the position of the slide?
Yes, the DFM-20-80-B-PPV-A-GF is prepared for Festo proximity switches (e.g., SME/SMT series). Insert them into the T-slots on the sides of the slide. The "A" option ensures compatible sensing slots.
What is the maximum load I can move?
The drive can move loads up to the theoretical force. At 6 bar, the forward force is about 188 N (pull stroke approximately 141 N). The slide guide supports a maximum dynamic lateral force of about 200 N, but you should verify with actual load and speed conditions.
How do I mount the drive?
The drive can be mounted using the through-holes in the slide and the threaded holes/tap on the body. Use appropriate screws. Fix the base body to a stationary part and the slide to the moving load. Alternatively, mount it inverted or vertically. Ensure the guide does not bend under load.
Is lubrication required?
The drive can be operated with dry or lubricated compressed air. Festo recommends a filtered, unlubricated air supply for standard operation. If external lubrication is used, use compatible ISO VG32 (or similar) oil. Regular lubrication of the slide guide with a thin grease film may be necessary depending on cycle frequency.
What maintenance is needed?
Periodically check for air leaks and tightness of mounting screws. Clean the shaft/slide surface with a soft cloth and apply a light layer of grease. Replace worn seals if you notice decreased performance. For major repairs, contact Festo service.
What are the environmental limits?
The GF version has a corrosion-resistant coating, suitable for harsh environments. The operating temperature range is -20°C to +80°C. Avoid prolonged use in excessive humidity without proper condensation drainage.
How can I repair or get spare parts?
The unit is an OEM component. For spare parts, use Festo's original seals or service kits specifically for the DFM-20-80. Many parts can be sourced through authorized distributors. If the guide is worn significantly, replace the entire drive for safe operation.
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USER MANUAL DFM-20-80-B-PPV-A-GF Festo
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Product information
Brand : Festo
Model : DFM-20-80-B-PPV-A-GF
Category : Uncategorized