Airtac MFJ Adjustable Mini Cylinder MFJ25X80-75
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X80-75 is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø25mm bore and 80mm 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
- Stroke80 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 MFJ25X80-75
Trimming the extend end by up to 75 mm on site, the MFJ25X80-75 lets you dial in the exact 5 to 80 mm forward position without swapping hardware. This JIS-standard round-body mini cylinder pairs a SUS304 stainless barrel with riveted aluminium covers, yielding a shorter overall length than an equivalent ISO 6432 unit while resisting mild washdown.
Driven by filtered air through a 1/8" port, the Ø10 mm piston rod delivers 245.3 N of push force at 0.5 MPa. That translates to a safe working load near 147 N, or enough to lift about 12.5 kg vertically with a 2:1 margin. Note that this specific SKU lacks a magnet, so it cannot host CMSG, DMSG, or EMSG sensors.
Airtac MFJ Adjustable Mini Cylinder MFJ25X80-75 Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X80-75 |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 80 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 MFJ25X80-75
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×80 | 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 MFJ25X80-75 Is Used
Changeover Dial-In
Rotate the external adjuster to shorten the extend stroke by up to 75 mm, hitting new product stops during format changes without replacing the cylinder.
Trial Fit Rigs
Perfect for prototype benches where the exact 5 to 80 mm end position is unknown, letting technicians find the sweet spot before finalizing the design.
Light Pressing
Delivers 245.3 N of push force at 0.5 MPa for seating small components, with fixed TPU bumpers absorbing the impact at the end of the stroke.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ25X80-75 the Right Cylinder?
Choosing between bores comes down to the force required at 0.5 MPa: the MFJ20 provides 157 N, this MFJ25 hits 245.3 N, and the larger MFJ32 offers 402.2 N. If your fixture needs precise end-of-travel tuning during line changeovers or trial setups, the 75 mm adjustment window here is invaluable for hitting a variable stop without machining new spacers.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover mount). Remember that the fixed TPU bumpers only decelerate the stroke end; they do not lock the rod. If gravity or air loss could cause drift, install an external rod lock or pilot check valve. For position feedback, you must select the -S magnet variant, as this base model cannot accept a switch.
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 MFJ25X80-75 FAQ
This 25 mm bore cylinder uses a 1/8" port and a Ø10 mm rod with an M10x1.25 male thread. At 0.5 MPa it pushes with 245.3 N and pulls with 206.1 N. At 0.7 MPa the push is 343.4 N and pull is 288.5 N. The theoretical maximum force is 50 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 75 mm, giving a usable 5 to 80 mm forward range, while retract remains full. The fixed TPU bumpers only decelerate the end of travel; they are not a brake. The cylinder will drift on air loss, so use an external rod lock for holding. Also, this non-S SKU lacks a magnet and cannot take sensors.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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