Airtac MFJ Adjustable Mini Cylinder MFJ25X150-20
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X150-20 is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø25mm bore and 150mm 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
- Stroke150 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 MFJ25X150-20
Fine-tune your extend end position on-site with the AirTAC MFJ25X150-20, a JIS-standard round-body mini cylinder built with a SUS304 stainless barrel and riveted aluminium covers. An external adjuster lets you shorten the forward stroke by up to 20 mm, giving a usable extend range of 130 to 150 mm without buying a new unit or adding external stops. This riveted, non-tie-rod design is notably shorter than an ISO 6432 cylinder for the same bore and stroke, saving valuable mounting length while resisting mild corrosion and washdown.
Delivering 245.3 N of push force and 206.1 N of pull force at 0.5 MPa, this double-acting actuator uses a 12 mm rod and a 1/8" port. It yields a safe working load of about 147 N, meaning it can lift roughly 12.5 kg vertically with a 2:1 margin. Fixed TPU bumper pads decelerate the stroke ends, and because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or EMSG sensors.
Airtac MFJ Adjustable Mini Cylinder MFJ25X150-20 Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X150-20 |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 150 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 MFJ25X150-20
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×150 | 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 MFJ25X150-20 Is Used
Changeover Calibration Rig
Dial in the 130 to 150 mm extend position during product changeovers, using the 20 mm adjuster to set stops for varying part sizes without swapping hardware.
Light Press Fit Station
Apply up to 245.3 N of push force at 0.5 MPa to seat small bearings, relying on the adjuster to prevent over-travel and damage to delicate components.
Prototype Positioning Fixture
Secure prototypes with a 147 N safe working load while fine-tuning the exact extend distance on the fly, perfect for R&D benches where dimensions evolve.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ25X150-20 the Right Cylinder?
When sizing this series, compare the real thrust figures: the MFJ20 provides 157 N of push force at 0.5 MPa, this MFJ25 hits 245.3 N, and the larger MFJ32 delivers 402.2 N. The adjustable 20 mm window is ideal for trial fits and line changeovers where the exact end position is not yet final. For mounting, choose LB foot, FA flange, or TC trunnion brackets (SDB and back-cover mounts are unavailable). Remember that the external adjuster only sets the extend end point; it is not a mid-stroke lock. Because a standard cylinder drifts on air loss, install an external rod lock or pilot-operated check valve if you need to hold a load safely.
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 MFJ25X150-20 FAQ
This double-acting cylinder uses a 1/8" port and a 12 mm rod. 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, and the operational speed ranges from 30 to 800 mm/s.
The external adjuster shortens the extend stroke by up to 20 mm on-site, giving a usable forward range of 130 to 150 mm; retract remains full. Fixed TPU bumper pads decelerate the stroke ends. This SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG switches.
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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