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Festo
556651
Swivel actuator unit DSL-20- -270-P-A-S20-KF-B
The Festo 556651 is a double-acting rotary vane industrial component featuring a 20 mm piston diameter, a 10 mm to 100 mm stroke, and a ball bearing-guided design for torsion protection. This unit operates with compressed air as per ISO 8573-1:2010 [7:4:4] within a 2.5 bar to 8 bar pressure range, delivering a swivel angle from 0 to 272 degrees, 0.05 degrees of swivel angle backlash, and 1 degree repetition accuracy. Elastic cushioning rings at both ends manage impact velocities up to 500 mm/s and a max swivel frequency of 2 Hz at 6 bar, while the through, hollow piston rod accommodates any mounting position. Submit the exact part number, quantity, and application requirements to request a quote.
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Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Festo references — within one business day.
- Manufacturer
- Festo
- Part number
- 556651
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 556651.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Adjustment range of swivel angle
- 0 deg...270 deg
- Stroke
- 10 mm...100 mm
- Piston diameter
- 20 mm
- Swivel angle
- 0 deg...272 deg
- Cushioning
- Elastic cushioning rings/pads at both ends
- Mounting position
- Any
- Precision adjustment
- -6 deg
- Mode of operation
- Double-acting
- Structural design
- Rotary vane
- Position sensing
- Via proximity switch
- Variants
- Through, hollow piston rod
- Protection against torsion/guide
- Ball bearing-guided
- Operating pressure
- 2.5 bar...8 bar
- Max. impact velocity
- 500 mm/s
- Max. swivel frequency at 6 bar
- 2 Hz
- Swivel angle backlash
- 0.05 deg
- Repetition accuracy
- 1 deg
- Operating medium
- Compressed air as per ISO 8573-1:2010 [7:4:4]
- Information on operating and pilot media
- Operation with oil lubrication possible (required for further use)
- Corrosion resistance class (CRC)
- 1 - Low corrosion stress
- LABS (PWIS) conformity
- VDMA24364-B2-L
- Ambient temperature
- -10 °C...60 °C
- Dynamic load torque
- 0.35 Nm
- Theoretical force at 6 bar, retracting
- 120.5 N
- Theoretical force at 6 bar, advancing
- 158 N
- Theoretical torque at 6 bar
- 2.5 Nm
- Permissible mass moment of inertia
- 7E-05 kgm²
- Basic weight with 0 mm stroke
- 1180 g
- Additional weight per 10 mm stroke
- 52 g
- Type of mounting
- Alternatively: | Clamped in T slot | With external thread
Engineering context
Identification and RFQ Guidance
What to include in your RFQ
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 556651. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.