Airtac MFJ Adjustable Mini Cylinder MFJ25X30-10S
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X30-10S is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø25mm bore and 30mm 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
- Stroke30 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 MFJ25X30-10S
Trimming the extend stroke by up to 10 mm on-site, this double-acting JIS-standard round-body mini cylinder lets you dial in the exact end position without buying a new unit. The SUS304 stainless barrel and riveted aluminium covers form a compact body that is physically shorter than a comparable ISO 6432 cylinder, saving valuable mounting length. A built-in magnet (-S) is included for position sensing.
Fitted with a 10 mm piston rod and a 1/8" port, the 25 mm bore generates 245.3 N of push force at 0.5 MPa. This yields a safe working load of roughly 147 N, letting you lift about 12.5 kg vertically with a 2:1 safety margin. Fixed TPU bumper pads decelerate the piston at the stroke ends, while the external adjuster handles fine-tuning for changeovers.
Airtac MFJ Adjustable Mini Cylinder MFJ25X30-10S Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X30-10S |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 30 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 MFJ25X30-10S
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×30 | 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 MFJ25X30-10S Is Used
Changeover Dial-In
Fine-tune the extend position by up to 10 mm during product line changeovers, avoiding the need to swap cylinders or add external mechanical stops.
Trial Fit Rigs
Perfect for prototype assemblies where the 245.3 N push force is sufficient but the exact end-of-stroke position requires iterative physical adjustment.
Variable Position Stops
Acts as an adjustable end stop for light-duty 12.5 kg vertical lift tasks, letting operators tweak the extend endpoint on the fly without reprogramming.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ25X30-10S the Right Cylinder?
When sizing this series, compare the real thrust figures: the MFJ20 delivers 157 N of push force at 0.5 MPa, this MFJ25 provides 245.3 N, and the larger MFJ32 outputs 402.2 N. Choose the 25 mm bore when your load sits in that middle range, and use the 10 mm adjuster to perfect the extend endpoint during trial fits or line changeovers where the exact stroke is not yet final.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB). The -S magnet enables CMSG, DMSG, or EMSG switches for end-of-stroke confirmation. Remember that the bumper pads only decelerate the stroke; they do not lock the piston. If you need to hold a load vertically during air loss, install 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 MFJ25X30-10S FAQ
This 25 mm bore cylinder has a 1/8" port and a 10 mm rod with an M10x1.25 male thread. It generates 245.3 N push and 206.1 N pull at 0.5 MPa, 343.4 N push and 288.5 N pull at 0.7 MPa, with a theoretical max of 50 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 10 mm on-site (usable extend 20-30 mm), while retract remains full. The -S suffix means a built-in magnet is present for CMSG/DMSG/EMSG sensors. Fixed TPU bumpers decelerate the ends, but do not lock the load.
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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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