Airtac MFJ Adjustable Mini Cylinder MFJ40X175-10S
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ40X175-10S 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 MFJ40X175-10S
Trimming the extend stroke by up to 10 mm on-site, the AirTAC MFJ40X175-10S lets you dial in the exact end position between 165 mm and 175 mm without buying a new cylinder. This double-acting mini cylinder delivers a robust 628.3 N push force at 0.5 MPa, making it a strong choice for mid-weight positioning tasks.
Built as a JIS-standard round-body unit with a SUS304 stainless barrel and riveted aluminium covers, it occupies a shorter mounting envelope than an ISO 6432 cylinder of the same bore and stroke. The -S suffix means a piston magnet is fitted for CMSG, DMSG, or EMSG sensors. It uses a 1/4" port, a 16 mm rod, and fixed TPU bumpers to decelerate the stroke ends.
Airtac MFJ Adjustable Mini Cylinder MFJ40X175-10S Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ40X175-10S |
|---|---|
| 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 MFJ40X175-10S
| 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 MFJ40X175-10S Is Used
Changeover Stations
Fine-tune the 165-175 mm extend position during product format changes, using the 628.3 N force to push new fixtures into place without swapping hardware.
Trial Fit Rigs
Dial in the exact end-of-stroke stop on prototype assembly rigs, relying on the 377 N safe working load to seat components before finalizing dimensions.
Variable Position Stops
Adjust the extend endpoint on the fly for batch variations, letting the 40 mm bore handle loads up to 32 kg vertically while the SUS304 barrel resists washdown.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ40X175-10S the Right Cylinder?
When sizing these adjustable units, compare the two bores directly: this MFJ40 pushes with 628.3 N at 0.5 MPa, whereas the smaller MFJ32 provides 402.2 N. If your application demands a safe working load around 377 N (about 60% of the 0.5 MPa push figure) or needs to lift roughly 32 kg vertically with a 2:1 margin, the 40 mm bore is the correct selection.
The 10 mm adjuster is ideal for trial fits and line changeovers where the final stop position is not yet finalized. Remember that the bumper only decelerates the stroke; it does not hold the load on air loss, so add an external rod lock or pilot check valve for suspended loads. Mounting options include LB foot, FA flange, and TC trunnion (no SDB).
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 MFJ40X175-10S FAQ
This 40 mm bore cylinder has a 1/4" port and a 16 mm rod. It pushes with 628.3 N and pulls with 527.8 N at 0.5 MPa; at 0.7 MPa it pushes 879.6 N and pulls 738.9 N. The theoretical max force is 128.1 kgf at 1.0 MPa. The external adjuster shortens the extend stroke by up to 10 mm, giving a usable extend range of 165-175 mm.
Yes, the -S suffix indicates a built-in magnet for CMSG, DMSG, or EMSG switches. The cylinder uses fixed TPU bumper pads to decelerate at the stroke ends, but it does not hold the load if air pressure is lost. For suspended loads that must not drift, install an external rod lock or pilot-operated check valve.
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