Airtac MFJ Adjustable Mini Cylinder MFJ25X105-30S
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X105-30S is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø25mm bore and 105mm 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
- Stroke105 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 MFJ25X105-30S
Trimming the extend stroke by up to 30 mm on site, the AirTAC MFJ25X105-30S lets you dial in the exact end position between 75 and 105 mm without adding external stops. This JIS-standard round-body mini cylinder features a SUS304 stainless steel barrel and riveted aluminium covers, delivering a shorter overall mounting length than an equivalent ISO 6432 unit while retaining a 1/8" port and an M10x1.25 male rod thread.
Driven by filtered air at 0.15-1.0 MPa, the double-acting bore generates 245.3 N of push force at 0.5 MPa. The built-in magnet (-S) directly supports CMSG, DMSG and EMSG switches for position sensing. Factoring a 2:1 safety margin, it lifts about 12.5 kg vertically, yielding a safe working load near 147 N. Fixed TPU bumper pads absorb end-of-stroke impact, as this variant uses a fixed bumper rather than an adjustable air cushion.
Airtac MFJ Adjustable Mini Cylinder MFJ25X105-30S Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X105-30S |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 105 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 MFJ25X105-30S
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×105 | 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 MFJ25X105-30S Is Used
Changeover Stations
Fine-tune the extend endpoint up to 30 mm during product format changes, letting one cylinder adapt to varying part sizes without mechanical rebuilds.
Trial Fit Rigs
Dial in the exact 75 to 105 mm extension on prototype assemblies, using the 245.3 N push force to seat components perfectly before finalizing the design.
Variable Position Stops
Replace hard external stops with the integrated adjuster to set precise pushing distances for light assembly tooling, safely lifting around 12.5 kg vertically.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ25X105-30S the Right Cylinder?
When sizing this series, compare the actual outputs: the MFJ20 bore yields 157 N of push force at 0.5 MPa, while the MFJ32 bore jumps to 402.2 N. This 25 mm bore sits comfortably in the middle at 245.3 N, making it a solid fit for moderate actuation tasks where you need on-the-fly stroke tuning during line changeovers or trial fits. The external adjuster only shortens the extend stroke; it does not lock the piston mid-travel. If the application requires the load to be held securely upon air loss, install an external rod lock or pilot check valve, as the cylinder will drift. For mounting, choose from LB foot, FA flange, or TC trunnion brackets (SDB and back-cover options are not available on this adjustable build).
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 MFJ25X105-30S FAQ
This double-acting cylinder uses a 1/8" air port and generates 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. It operates at speeds between 30 and 800 mm/s.
The external adjuster shortens the extend stroke by up to 30 mm on site, giving a usable extend range of 75-105 mm; retract remains full stroke. The -S suffix denotes a built-in piston magnet compatible with CMSG, DMSG and EMSG switches. End-of-stroke deceleration is handled by fixed TPU bumper pads, not an adjustable air cushion.
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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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