Airtac MFJ Adjustable Mini Cylinder MFJ25X160-20S
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X160-20S is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø25mm bore and 160mm stroke, 1/8" air ports and a SUS304 stainless-steel barrel for mildly corrosive environments. For the same bore and stroke it is shorter than an ISO 6432 cylinder, saving mounting space.
- BoreØ25 mm
- Stroke160 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM10×1.25
- CushionFixed TPU bumper pads
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac MFJ Adjustable Mini Cylinder MFJ25X160-20S
Trim the extend position by up to 20 mm directly at the fixture with the MFJ25X160-20S, a JIS-standard round-body mini cylinder built with a SUS304 stainless barrel and riveted aluminium covers. The external adjuster lets you set the usable extend stroke between 140 and 160 mm without buying a new unit, making it highly practical for trial fits and line changeovers where the exact end position is not final. Because the body is shorter than an ISO 6432 cylinder for the same bore and stroke, it saves valuable mounting length while the stainless construction resists mild corrosion and washdown.
This double-acting actuator uses a Ø10 mm piston rod with an M10x1.25 male thread and a 1/8" air port. It delivers 245.3 N of push force and 206.1 N of pull force at 0.5 MPa, peaking at a theoretical 50 kgf at 1.0 MPa. For application sizing, this translates to a safe working load of roughly 147 N or lifting about 12.5 kg vertically with a 2:1 margin. The -S suffix means a piston magnet is installed, enabling CMSG, DMSG or EMSG switches for position sensing.
Airtac MFJ Adjustable Mini Cylinder MFJ25X160-20S Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X160-20S |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 160 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed TPU bumper pads |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MF/MFC (JIS-standard) datasheet. Barrel: SUS304 stainless steel; covers: aluminum alloy (round-body, riveted rolling-packed construction). Thread options: PT (blank) / G / NPT.
Theoretical Output Force (Ø25mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MFJ Adjustable Mini Cylinder MFJ25X160-20S
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×160 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MF-family variants: MF / MFC (double acting ±cushion), MSF / MTF (single acting push / pull), MFD / MFCD (double rod ±cushion), MFJ / MFCJ (adjustable stroke ±cushion). Back covers CA / U / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MFJ Adjustable Mini Cylinder MFJ25X160-20S Is Used
Changeover Stations
Fine-tune the 140-160 mm extend position on the fly for different product runs, using the 245.3 N push force to push parts into the next station without re-machining hard stops.
Trial Fit Rigs
Dial in the exact end position during prototype assembly where the final stroke is unknown, leveraging the 12.5 kg vertical lift capacity to test handling mechanics safely.
Variable Position Stops
Adjust the extend stroke by up to 20 mm directly at the tooling point to accommodate slight part length variations while keeping the overall JIS body length shorter than ISO 6432.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ25X160-20S the Right Cylinder?
Choose between the available bores by comparing the 0.5 MPa push forces: the MFJ20 provides 157 N, this MFJ25 hits 245.3 N, and the larger MFJ32 offers 402.2 N. The MFJ25 is the right middle ground when you need approximately 147 N of safe working load but want a more compact footprint than the 32 mm bore. Use the 20 mm adjustable window to dial in the exact extend stop during commissioning rather than machining external hard stops. Mounting options include LB foot, FA flange and TC trunnion (there is no SDB or back-cover option on this adjustable build). The cylinder relies on fixed TPU bumper pads to decelerate the stroke end, so it is not a mid-stroke lock; if the load must be held on air loss, add an external rod lock or pilot check valve.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G / NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MFJ Adjustable Mini Cylinder MFJ25X160-20S FAQ
This 25 mm bore cylinder has a 1/8" air port and delivers 245.3 N push / 206.1 N pull at 0.5 MPa, and 343.4 N push / 288.5 N pull at 0.7 MPa. The theoretical maximum force is 50 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 20 mm (usable range 140-160 mm); it only sets the end position and does not act as a mid-stroke lock. The -S suffix indicates a built-in piston magnet for use with CMSG, DMSG or EMSG sensors, and fixed TPU bumpers decelerate the stroke ends.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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