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Festo
177257
Swivel/linear unit DSL-40-25-270-P-S20-FF-KF
The Festo 177257 is a double-acting rotary vane industrial component featuring a 40 mm piston diameter, a 25 mm stroke, and a ball-bearing guide for torque and guide protection. Operating at pressures from 2.5 to 8 bar with dried compressed air, it delivers a torque of 20 Nm at 6 bar and supports a maximum swivel frequency of 2 Hz alongside a 272-degree swivel angle and a 270-degree rotation angle adjustment range. Equipped with flexible cushioning rings at both ends, a 2.1-degree cushioning angle, and position detection capabilities for proximity and inductive sensors, this variant includes a through, hollow piston rod design with an ambient temperature range of -10 to 60 °C. 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
- 177257
- Data verification
- Manufacturer evidence reviewed
For a faster response, include quantity, condition, and delivery destination.
Exact part-number verificationTechnical properties are matched to 177257.
Worldwide sourcingSupport for planned and urgent industrial requirements.
Manufacturer documentationA document is added when the reviewed source provides one.
Verified configuration
Technical Specifications
- Cushioning angle
- 2.1 deg
- Rotation angle adjustment range
- 270 deg
- Stroke
- 25 mm
- Piston diameter
- 40 mm
- Swivel angle
- 272 deg
- Cushioning
- P: Flexible cushioning rings/plates at both ends
- Assembly position
- Any
- Fine adjustment
- 5 deg
- Mode of operation
- double-acting
- Design structure
- Rotary vane
- Position detection
- For inductive sensors | For proximity sensor
- Variants
- S20: through, hollow piston rod
- Protection against torque/guide
- with ball-bearing guide
- Operating pressure
- 2.5 ... 8 bar
- Max. impact speed
- 500 mm/s
- Max. swivel frequency at 6 bar
- 2 Hz
- Operating medium
- Dried compressed air, lubricated or unlubricated
- Ambient temperature
- -10 ... 60 °C
- Cushioning length
- 12 mm
- Torque at 6 bar
- 20 Nm
- Theoretical force at 6 bar, return stroke
- 495 N
- Theoretical force at 6 bar, advance stroke
- 603 N
- Permissible mass moment of inertia
- 0.00024 kgm2
- Additional weight per 10 mm stroke
- 175 g
- Basic weight for 0 mm stroke
- 5,200 g
- Product weight
- 5,200 g
- Mounting type
- Clamped in T-slot | with external (male) thread | Optional
- Pneumatic connection
- G1/8
- Materials information for cover
- Wrought Aluminum alloy | Anodized
- Materials information for seals
- TPE-U(PU)
- Materials information, housing
- Aluminum | Smooth anodized
- Materials information for piston rod
- Heat-treatment steel
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 177257. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.