Airtac MFJ Adjustable Mini Cylinder MFJ40X175-75S
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ40X175-75S is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø40mm bore and 175mm stroke, 1/4" 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.
- BoreØ40 mm
- Stroke175 mm
- Port size1/4"
- Acting typeDouble acting, adjustable stroke
- Rod threadM14×1.5
- 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 MFJ40X175-75S
Dial in your exact end position on the fly with the AirTAC MFJ40X175-75S, a JIS-standard round-body mini cylinder built for double-acting service. An external adjuster lets you shorten the extend stroke by up to 75 mm directly on the machine, providing a usable extend range of 100 to 175 mm without buying a new unit or adding external stops. The riveted rolling-packed construction pairs a SUS304 stainless steel barrel with aluminium covers, resisting mild corrosion and washdowns while saving mounting length compared to an ISO 6432 cylinder of the same bore and stroke.
Driven by a 16 mm piston rod and a 1/4" port, this 40 mm bore generates 628.3 N of push force at 0.5 MPa, making it a robust choice for mid-weight positioning. Because the -S suffix includes a built-in piston magnet, you can mount CMSG, DMSG, or EMSG switches for end-of-stroke confirmation. Fixed TPU bumper pads absorb impact energy at the stroke extremes, and the unit operates smoothly between 30 and 800 mm/s.
Airtac MFJ Adjustable Mini Cylinder MFJ40X175-75S Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ40X175-75S |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 175 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 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 MFJ40X175-75S
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | 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 MFJ40X175-75S Is Used
Changeover Stations
Fine-tune the extend position up to 75 mm during product format changes, using the 628.3 N push force to shift medium-weight guides without swapping cylinders.
Prototype Rigs
Dial in the exact 100 to 175 mm extend length during trial fits, leveraging the SUS304 stainless barrel for durability in iterative testing environments.
Variable Position Stops
Adjust the end stop externally to accommodate different part heights on the same line, relying on fixed TPU bumpers to cushion the impact at each setting.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ40X175-75S the Right Cylinder?
When sizing this adjustable-stroke family, compare the real thrust outputs: the 40 mm bore here yields 628.3 N push at 0.5 MPa, whereas the smaller MFJ32 delivers 402.2 N. If your trial-fit fixture or changeover station requires moving roughly 32 kg vertically, this 40 mm bore provides a safe 2:1 margin. The 75 mm adjustment window is exceptionally useful during commissioning when the exact extend position is not yet finalized, letting you trim the 175 mm base stroke down to 100 mm on site.
Mounting options include LB foot, FA flange, and TC trunnion brackets, with no SDB or back-cover variant available. 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 vertically during air loss, add an external rod lock or pilot check valve, as the piston will drift. For applications needing end-of-stroke sensing, the -S magnet on this SKU works seamlessly with CMSG, DMSG, and EMSG sensors.
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 MFJ40X175-75S FAQ
This 40 mm bore cylinder features a 1/4" port and a 16 mm rod. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, 879.6 N push and 738.9 N pull at 0.7 MPa, with a theoretical maximum of 128.1 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa.
The external adjuster shortens the extend stroke by up to 75 mm, giving a usable extend range of 100 to 175 mm; the retract stroke remains full. The -S suffix means a piston magnet is included for CMSG, DMSG, or EMSG sensors. Fixed TPU bumpers decelerate the stroke end, but note this is not an adjustable air cushion.
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 MFJ40X175-75S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.