Airtac MFJ Adjustable Mini Cylinder MFJ25X175-50
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ25X175-50 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 MFJ25X175-50
Dial in your extend end-position on the fly with the AirTAC MFJ25X175-50, a JIS-standard round-body mini cylinder built with a SUS304 stainless barrel and riveted aluminium covers. An external adjuster lets you shorten the extend stroke by up to 50 mm on site, giving a usable extend range of 125 to 175 mm without buying a new unit. This double-acting actuator uses a 1/8" port and a Ø10 mm piston rod, delivering 245.3 N of push force at 0.5 MPa.
The riveted construction yields a shorter mounting envelope than an ISO 6432 cylinder for the same bore and stroke, saving valuable space while resisting mild washdown. Fixed TPU bumper pads decelerate the stroke ends. Because this specific SKU lacks the -S magnet option, it cannot accept CMSG, DMSG or EMSG magnetic switches. For vertical loads, expect it to lift about 12.5 kg safely with a 2:1 margin.
Airtac MFJ Adjustable Mini Cylinder MFJ25X175-50 Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ25X175-50 |
|---|---|
| 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 MFJ25X175-50
| 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 MFJ25X175-50 Is Used
Changeover Stations
Fine-tune the 125 to 175 mm extend position during product format changes without swapping out the entire actuator.
Prototype Set-up Rigs
Dial in the exact reach for test fixtures, using the 245.3 N push force to probe or press components accurately.
Variable-Position Stops
Shorten the stroke by up to 50 mm on site to create adjustable mechanical end stops for light assembly tooling.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ25X175-50 the Right Cylinder?
When sizing this series, compare the real thrust figures: the MFJ20 provides 157 N of push at 0.5 MPa, this MFJ25 hits 245.3 N, and the larger MFJ32 delivers 402.2 N. Choose the 25 mm bore when your load sits in that middle band. The 50 mm adjustable window is ideal for trial fits and line changeovers where the exact end position is not yet finalised.
Remember that the external adjuster only sets the extend end point—it is not a mid-stroke lock. A plain cylinder drifts on air loss, so for holding a load you must add an external rod lock or pilot check valve. Mount via LB foot, FA flange or TC trunnion (no SDB), and note that no back cover is 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 MFJ25X175-50 FAQ
This double-acting cylinder features a 1/8" port and a Ø10 mm rod. 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 50 mm (usable range 125-175 mm). It relies on fixed TPU bumper pads for end deceleration, not an adjustable air cushion. Because this SKU lacks a -S magnet it cannot take sensors, and the cylinder will drift on air loss so use an external rod lock for holding.
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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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