Airtac MFJ Adjustable Mini Cylinder MFJ25X100-30
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X100-30 is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø25mm bore and 100mm 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
- Stroke100 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 MFJ25X100-30
Trimming the extend stroke by up to 30 mm on-site, the AirTAC MFJ25X100-30 lets you set a precise 70-100 mm end position without swapping hardware. This JIS-standard round-body mini cylinder features a SUS304 stainless barrel and riveted aluminium covers, yielding a shorter overall length than an ISO 6432 unit for the same 25 mm bore and 100 mm stroke.
Driven by filtered air at 0.15-1.0 MPa through a 1/8" port, the Ø10 mm rod delivers 245.3 N push and 206.1 N pull at 0.5 MPa. That translates to a safe working load of roughly 147 N, or about 12.5 kg of vertical lift with a 2:1 margin. Fixed TPU bumpers absorb end impacts, and since this SKU lacks a magnet, it cannot host CMSG/DMSG/EMSG sensors.
Airtac MFJ Adjustable Mini Cylinder MFJ25X100-30 Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X100-30 |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 100 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 MFJ25X100-30
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×100 | 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 MFJ25X100-30 Is Used
Changeover Dial-In
Fine-tune the 70-100 mm extend point during product changeovers, using the 30 mm adjuster to set new stops without machining replacement spacers.
Trial Fit Assembly
Safely press 12.5 kg sub-assemblies into place, dialing back the stroke on the fly to find the exact seating depth before finalizing the fixture.
Variable Position Stops
Act as an adjustable end-stop in test rigs, leveraging the 245.3 N push force to push components while tweaking the extended position in seconds.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ25X100-30 the Right Cylinder?
Choosing between bores means matching your payload: the MFJ20 provides 157 N of push force at 0.5 MPa, this MFJ25 hits 245.3 N, and the MFJ32 jumps to 402.2 N. The 30 mm adjustable window is ideal for trial fits and line changeovers where the exact extend point is unknown, letting you dial in the stroke after mounting.
Remember that the external adjuster only shortens the extend end; it does not lock the load. If air pressure drops, the piston drifts, so fit an external rod lock or pilot check valve for suspended loads. Mount via LB foot, FA flange, or TC trunnion (no SDB), and note that a plain cylinder without the -S magnet cannot accept position switches.
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 MFJ25X100-30 FAQ
This 25 mm bore cylinder uses a 1/8" air port and a Ø10 mm rod with 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 maximum of 50 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 30 mm (usable range 70-100 mm); retract remains full. Fixed TPU bumpers decelerate the stroke end but do not lock the piston. If you need position holding on air loss, install an external rod lock or pilot check valve.
Authorized Export Seller
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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