Airtac MFJ Adjustable Mini Cylinder MFJ40X75-10
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ40X75-10 is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø40mm bore and 75mm 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
- Stroke75 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 MFJ40X75-10
Dial in your extend end position on-site with the AirTAC MFJ40X75-10, 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 10 mm, giving a usable extend range of 65 to 75 mm without buying a new unit or adding external stops. The retract stroke remains full length.
In the 40 mm bore class, this double-acting actuator delivers a push force of 628.3 N and a pull force of 527.8 N at 0.5 MPa, peaking at a theoretical 128.1 kgf at 1.0 MPa. It uses a 1/4" port and a 16 mm rod with an M14x1.5 male thread. The compact riveted body is shorter than a comparable ISO 6432 cylinder, saving mounting length while the fixed TPU bumper pads absorb end-of-stroke impact across the 30-800 mm/s speed range.
Airtac MFJ Adjustable Mini Cylinder MFJ40X75-10 Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ40X75-10 |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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 MFJ40X75-10
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 MFJ40X75-10 Is Used
Changeover Stations
Fine-tune the extend position by up to 10 mm during product changeovers, using the 628.3 N push force to seat varying tooling plates without machining new hard stops.
Trial Fit Rigs
Dial in the exact 65 to 75 mm extend length on prototype assembly rigs, leveraging the 377 N safe working load to press parts gently while finding the optimal end point.
Variable Position Stops
Adjust the stroke end externally for batch testing different component heights, letting the SUS304 stainless body handle mild washdowns between test runs.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ40X75-10 the Right Cylinder?
Choose the MFJ40 over the smaller MFJ32 when you need more muscle: the 40 mm bore pushes 628.3 N at 0.5 MPa compared to 402.2 N for the 32 mm bore. This extra thrust makes the MFJ40X75-10 ideal for heavier fixtures, yielding a safe working load of about 377 N (roughly 60 percent of the 0.5 MPa push force) or lifting about 32 kg vertically with a 2:1 safety margin. The 10 mm adjustable window is perfect for trial fits and line changeovers where the exact end position is not yet final.
Remember that a plain cylinder drifts on air loss, as the fixed TPU bumper only decelerates the stroke end rather than locking the load; install an external rod lock or pilot check valve for holding. Mounting options include LB foot, FA flange, and TC trunnion (no SDB). Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG, or 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 MFJ40X75-10 FAQ
This 40 mm bore double-acting cylinder uses a 1/4" port and a 16 mm rod with an M14x1.5 male thread. At 0.5 MPa it pushes 628.3 N and pulls 527.8 N. At 0.7 MPa it pushes 879.6 N and pulls 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 10 mm on-site, yielding a 65 to 75 mm usable extend range while retract stays full. It uses fixed TPU bumper pads to decelerate the stroke end, not an adjustable air cushion. Note this SKU lacks the -S magnet, so it cannot take CMSG, DMSG, or EMSG sensors.
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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