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Festo
557634
Semi-rotary actuator DFPB-420-090-S4-F14
This Festo industrial component, part number 557634, features a rack and pinion design structure with an actuator size of 420, an F14 flange hole pattern, and a 90-degree swivel angle. Operating as a single-acting unit with no cushioning or position detection, it includes a NAMUR-based valve connection conforming to VDI/VDE 3845 standards and supports a nominal working pressure of 5.6 bar up to a maximum of 8 bar using compressed air meeting ISO 8573-1:2010 [7:4:4]. Certified for hazardous locations with ATEX category II 2G for gas and II 2D for dust, the device is rated for Safety Integrity Level up to SIL 3 in Low Demand mode within an ambient temperature range of -20°C to 80°C. Submit the exact part number, quantity, and application requirements to request a quote.
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Request a Quote- Manufacturer
- Festo
- Part number
- 557634
- Data verification
- Manufacturer evidence reviewed
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Verified configuration
Technical Specifications
- Size of actuator
- 420
- Flange hole pattern
- F14
- Swivel angle
- 90 deg
- Cushioning
- No cushioning
- Assembly position
- Any
- Mode of operation
- single-acting
- Design structure
- Rack and pinion
- Position detection
- No
- Valve connection conforms to standard
- Based on VDI/VDE 3845 (NAMUR)
- Safety Integrity Level (SIL)
- bis SIL 3 Low Demand mode
- Working pressure
- <= 8 bar
- Nominal working pressure
- 5.6 bar
- ATEX category Gas
- II 2G
- Explosion ignition protection type Gas
- c T4 X
- ATEX category Dust
- II 2D
- Explosion ignition protection type Dust
- c 125°C X
- Explosion-proof ambient temperature
- -20°C <= Ta <= +80°C
- Ambient temperature
- -20 ... 80 °C
- Operating medium
- Compressed air in accordance with ISO8573-1:2010 [7:4:4]
- Note on operating and pilot medium
- Lubricated operation possible (subsequently required for further | operation)
- CE symbol (see declaration of conformity)
- according to EU-Ex protection guideline (ATEX)
- Corrosion resistance classification CRC
- 3
- Note about the torque
- Das Betriebsdrehmoment des Antriebs darf nicht höher sein als das in | der ISO 5211 aufgeführte maximal zulässige Drehmoment, bezogen auf | die Größe des Befestigungsflansches und der Kupplung.
- PFD (Probability of Failure on Demand)
- 4.95E-06
- Pneumatic connection
- G1/4
- Materials note
- Conforms to RoHS
- Materials information for drive shaft
- Wrought Aluminum alloy | Anodized
- Materials information for cover
- Aluminum die cast | coated
- Materials information for seals
- NBR
- Materials information, housing
- Wrought Aluminum alloy | Anodized
- Materials information for nut
- Wrought Aluminum alloy | Anodized
- Screw material data
- High alloy steel, non-corrosive
Engineering context
Identification and RFQ Guidance
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Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Technical verification
Our sourcing response is prepared against Festo 557634. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.