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Description
Guided Actuator Cylinder DFM-40-25-P-A-GF 170864 for Industrial AutomationReplacement part number: DFM 40 25 P A GF, DFM4025PAGF, 170864 Specification: Stroke: 25 mm Piston diameter: 40 mm Drive unit operating mode: Yoke Cushioning: Elastic cushioning rings pads at both ends Mounting position: Any Guide: Sliding guide Structural design: Guide Position sensing: For proximity sensor Variants: Metals with copper, zinc or nickel by mass as main constituent are excluded from use. Exceptions are nickel in steel, chemically nickel
Replacement part number:
DFM-40-25-P-A-GF, DFM4025PAGF, 170864Specification:
Stroke: 25 mm
Piston diameter: 40 mm
Drive unit operating mode: Yoke
Cushioning: Elastic cushioning rings/pads at both ends
Mounting position: Any
Guide: Sliding guide
Structural design: Guide
Position sensing: For proximity sensor
Variants: Metals with copper, zinc or nickel by mass as main constituent are excluded from use. Exceptions are nickel in steel, chemically nickel-plated surfaces, printed circuit boards, cables, electrical plug connectors and coils.
Operating pressure: 0.15 MPa...1 MPa / 1.5 bar...10 bar
Max. speed: 0.8 m/s
Mode of operation: Double-acting
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): 0 - No corrosion stress
LABS (PWIS) conformity: VDMA24364-B1/B2-L
Suitability for the production of Li-ion batteries: Product corresponds to Festo's internal product definition for use in battery production: Metals with more than 1% by mass of copper, zinc or nickel are excluded from use. The exceptions are nickel in steel, chemically nickel-plated surfaces, circuit boards, cables, electrical plug connectors and coils
Cleanroom class: Class 7 according to ISO 14644-1
Ambient temperature: -20 °C...80 °C
Impact energy in the end positions: 0.7 Nm
Max. force Fy: 1227 N
Max. force Fy static: 1227 N
Max. force Fz: 1227 N
Max. force Fz static: 1227 N
Max. torque Mx: 53.97 Nm
Max. static moment Mx: 53.97 Nm
Max. torque My: 24.53 Nm
Max. static moment My: 24.53 Nm
Max. torque Mz: 24.53 Nm
Max. static moment Mz: 24.53 Nm
Max. permissible torque load Mx as a function of the stroke: 11.3 Nm
Max. payload as a function of the stroke at defined distance xs: 180 N
Theoretical force at 6 bar, retracting: 686 N
Theoretical force at 6 bar, advancing: 754 N
Moving mass: 1228 g
Product weight: 2217 g
Alternative connections: See product drawing
Pneumatic connection: G1/8
Application:
Fit for Automation Systems Industrial Equipment and so on machines with Festo Guided Actuator Cylinder DFM-40-25-P-A-GF.
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4.2 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
Absolutely perfect
Color: Pink, Size: 23.8''D x 22.3''W*38.4''H
Love the color and it’s very comfortable. I can also use an additional back rest when needed. It’s small enough for my limited work space, but large enough to accommodate my height requirements. It was quite easy to assemble, as I frequently put furniture together. I’ve had it for about a month and I’m hoping that it lasts a good while.
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Reviewed in the United States on May 15, 2026
★★★★★ 5
Good, cheap, small.
Color: Black, Size: 21.7''D x 21.7''W*38.2''H
The quality is better than expected for the price. Seat cushion is firm but not overly hard, wheels roll nicely, piston goes up and down smoothly, and assembly is quick and easy. The one major caveat is that it's quite small. If the user is going to be maybe 5'4 or less, it'll work (this was for a child, so it turned out great). But even on a 5'6 user, the seat is rather shallow (front to back) and the armrests are so low that your elbows won't reach unless you have freakishly long arms.
If you're after a cheap office chair for brief adult use, or for kids, this is perfect. I don't know how they turn a profit given that it's a fully functional office chair, shipped from China to your doorstep, for only $30. However, if you're of average height or bigger, it's probably going to be too small for you.
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Affordable great product
Color: Black, Size: 21.7''D x 21.7''W*38.2''H
Easy to assemble and comfortable
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Reviewed in the United States on June 4, 2026
★★★★★ 1
I regret
Color: Black, Size: 21.7''D x 21.7''W*38.2''H
A very uncomfortable chair that I owned for less than a month. The seat was broken and the particle board appeared old and reused, it was an oddly painted piece of material. It looked like someone ripped down the wall of a shack and made it the chair seat base. The seat was unstable due to the large crack throughout the entire piece of board. I am not sure how it could be returned since it is near impossible to remove the seat from the base once it is assembled. A terrible purchase that I regret. I know it is low cost, but I would suggest spending slightly more for another chair. I had to order a new chair that was only slightly more expensive so I could sit down.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
Wonderful product
Color: Brown, Number of Items: 1, Color: Brown, Number of Items: 1
This chair offers good lumbar support and a well-padded seat. It has a very nice and smooth rocking motion, you can loosen the tight/loose knob for reclining, and it is very comfortable to sit in while working on the computer or relaxing to watch TV. The back of the chair hits just above my neck, so the back of my head rests comfortably on the top of the chair. The color, brown, is exactly what I expected and looks professional. The height adjustment works well, it sits higher than my old chair, and I like that. It seems sturdy for the 300-pound weight recommended. I got it on Prime Day, so it was a good value for the money. It came packed well and quicker than expected. The pictures are a comparison to my 20-year-old office chair.
Assembling the chair was easy, however, be sure to attach the bottom part of the chair with the tight/loose knob facing the front of the chair. It's not clearly marked on the instructions. When it came time to put the back of the chair on it would be good to have another person to hold the chair back for you to align the chair arm holes and screw in, then you should be OK but I did discover that if I had attached the arms to the back of the chair first, it would be so much easier to align them for attachment. The wheels glide very easily and will take you across the room after one push. It swivels at 360 degrees easily, almost making me dizzy.
I am writing this review the same day I got the chair so I will update if I run into any issues. Otherwise, I recommend this chair.
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Reviewed in the United States on July 17, 2025
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