Airtac MFJ Adjustable Mini Cylinder MFJ25X175-30
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X175-30 is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø25mm bore and 175mm 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
- Stroke175 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 MFJ25X175-30
Trim the extend stroke by up to 30 mm directly on the machine with the MFJ25X175-30, giving you a usable 145 to 175 mm forward travel without buying a new actuator. This AirTAC double-acting mini cylinder delivers 245.3 N of push force at 0.5 MPa, making it a solid fit for moderate-duty positioning tasks.
Built as a JIS-standard round-body unit, the SUS304 stainless steel barrel and riveted aluminium covers form a compact assembly that is physically shorter than a comparable ISO 6432 cylinder, saving valuable mounting length while resisting mild washdown. The 1/8" port and Ø10 mm rod keep the footprint small. Because this specific SKU lacks the -S magnet option, it cannot accept CMSG, DMSG, or EMSG sensors. Fixed TPU bumper pads absorb the impact at the stroke ends, and the external adjuster sets the forward end position but does not function as a mid-stroke lock.
Airtac MFJ Adjustable Mini Cylinder MFJ25X175-30 Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X175-30 |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø25 mm |
| Stroke | 175 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 MFJ25X175-30
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 25 | Bore size in mm. |
| ×175 | 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 MFJ25X175-30 Is Used
Changeover Calibration
Dial in the 145 to 175 mm forward stroke during product format changes, using the 30 mm adjuster to set new end positions without swapping hardware.
Prototype Fitment
Leverage the 245.3 N push force to press and seat components on trial rigs, fine-tuning the travel distance on-site until the exact kinematic stop is proven.
Variable Position Stops
Push light fixtures into place and rely on the external adjuster to shorten the extend end, accommodating minor dimensional variances in incoming parts.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ25X175-30 the Right Cylinder?
When sizing this actuator, compare the real outputs: the MFJ20 provides 157 N of push force at 0.5 MPa, while the larger MFJ32 jumps to 402.2 N. This MFJ25 sits comfortably in the middle at 245.3 N, offering a safe working load of roughly 147 N or a vertical lift capacity of about 12.5 kg with a 2:1 safety margin. Choose the adjustable stroke format when you need to dial in a final end position during line changeovers or trial fits.
Mount this cylinder using LB foot, FA flange, or TC trunnion brackets—there is no SDB or back-cover option on this adjustable build. Remember that air pressure alone does not hold the load if supply drops; the piston will drift, so add an external rod lock or pilot check valve for fail-safe holding. Since this is a non-magnet SKU, position sensing is not possible without upgrading to the -S variant.
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 MFJ25X175-30 FAQ
This 25 mm bore cylinder features a 1/8" port and a Ø10 mm rod. At 0.5 MPa it provides 245.3 N push and 206.1 N pull force. 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.
The external adjuster shortens the extend stroke by up to 30 mm, giving a usable forward travel of 145 to 175 mm; retract remains full. It uses fixed TPU bumper pads to decelerate at the end, not an adjustable air cushion. The cylinder cannot hold a load on air loss and will drift—a pilot check valve or rod lock is required for holding.
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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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