Airtac MFJ Adjustable Mini Cylinder MFJ25X100-75S
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X100-75S 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 MFJ25X100-75S
Trimming the extend end by up to 75 mm on site, the AirTAC MFJ25X100-75S lets you set a usable forward travel of 25 to 100 mm without buying a new unit. It is a JIS-standard round-body mini cylinder with a SUS304 stainless barrel and riveted aluminium covers, engineered to be physically shorter than an ISO 6432 cylinder for the same 25 mm bore and 100 mm stroke. The 1/8" port and M10x1.25 male rod thread keep the pneumatic and mechanical integration straightforward.
Delivering 245.3 N of push force at 0.5 MPa, this double-acting actuator provides a safe working load of roughly 147 N, lifting about 12.5 kg vertically with a 2:1 margin. The -S suffix means a piston magnet is factory-installed, allowing CMSG, DMSG or EMSG switches to track position. Fixed TPU bumper pads decelerate the stroke ends, and because the body lacks a back cover, SDB mounting is not available.
Airtac MFJ Adjustable Mini Cylinder MFJ25X100-75S Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X100-75S |
|---|---|
| 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 MFJ25X100-75S
| 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 MFJ25X100-75S Is Used
Changeover Dial-In
Perfect for packaging lines running mixed product sizes, letting operators trim the 100 mm extend stroke by up to 75 mm to hit new stop positions without swapping cylinders.
Trial Fit Rigs
Ideal for prototype benches where the final push position is unverified, using the 245.3 N thrust to test engagement while fine-tuning the end point safely.
Variable Position Stops
Handles light pressing or locating tasks up to 12.5 kg vertical lift, relying on the built-in magnet to confirm the adjusted extend position via CMSG sensors.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ25X100-75S the Right Cylinder?
When sizing this series, compare the real thrust: 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 in the middle with 245.3 N, making it ideal for medium-duty changeover stations. The 75 mm adjustable window is a major asset during trial fits where the exact end position is unknown, as you can dial in the stroke without adding external stops.
For mounting, choose from LB foot, FA flange, or TC trunnion brackets. Remember that the external adjuster only sets the extend end point; it is not a mid-stroke lock. If your application must hold a load on air loss, the piston will drift, so you need to fit an external rod lock or pilot-operated 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 MFJ25X100-75S FAQ
This 25 mm bore cylinder features a 1/8" port and an M10x1.25 male rod 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. Operating speed ranges from 30 to 800 mm/s.
The external adjuster shortens the extend stroke by up to 75 mm, giving a usable forward travel of 25 to 100 mm, while retract remains full. The -S suffix indicates a built-in piston magnet for CMSG, DMSG or EMSG sensors. Fixed TPU bumper pads absorb end-of-stroke impact, but note this is not an adjustable air cushion or a locking mechanism.
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.
Request a Quote for Airtac MFJ Adjustable Mini Cylinder MFJ25X100-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.