Airtac MFJ Adjustable Mini Cylinder MFJ40X200-75S
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ40X200-75S is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø40mm bore and 200mm 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
- Stroke200 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 MFJ40X200-75S
Trimming the extend end by up to 75 mm on-site, the AirTAC MFJ40X200-75S lets you dial in the final position anywhere between 125 and 200 mm without swapping hardware. This JIS-standard round-body mini cylinder pairs a SUS304 stainless steel barrel with riveted aluminium covers, delivering a shorter overall body than an ISO 6432 unit for the same 40 mm bore and 200 mm stroke. The riveted rolling-packed build resists mild corrosion and washdown environments.
Driven by filtered air at 0.15 to 1.0 MPa through a 1/4" port, the 16 mm piston rod (M14x1.5 male thread) yields 628.3 N of push force at 0.5 MPa. That translates to a safe working load of roughly 377 N, or vertical lifting of about 32 kg with a 2:1 margin. The -S suffix equips the piston with a magnet for CMSG, DMSG or EMSG position sensing, while fixed TPU bumper pads absorb end-of-stroke impact.
Airtac MFJ Adjustable Mini Cylinder MFJ40X200-75S Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ40X200-75S |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 200 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 MFJ40X200-75S
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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 MFJ40X200-75S Is Used
Changeover Stations
Dial in the exact 125 to 200 mm extend position on packaging changeovers without machining new hard stops, leveraging the 628.3 N push force to shift heavy guide rails.
Prototype Fit-Up Rigs
Use the 75 mm on-site adjustment window to find the optimal end position during prototype assembly, safely lifting roughly 32 kg vertically while testing cycle parameters.
Variable-Position Stops
Act as an adjustable mechanical end stop for secondary machining operations, using the SUS304 barrel to withstand light washdown while the -S magnet confirms retraction.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ40X200-75S the Right Cylinder?
Choosing between the two available bores comes down to force: this 40 mm bore generates 628.3 N push at 0.5 MPa, whereas the 32 mm bore tops out at 402.2 N. If your load requires the higher thrust class and you need to fine-tune the extend position during trial fits or line changeovers, the 75 mm adjustment window here is ideal. The external adjuster only shortens the extend stroke; retract remains full.
Mounting options include LB foot, FA flange and TC trunnion (no SDB or back-cover variant exists). Remember that fixed TPU bumpers only decelerate the stroke end—they do not lock the rod. If gravity or air loss could cause drift, install an external rod lock or pilot check valve to hold the load securely.
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 MFJ40X200-75S FAQ
This 40 mm bore double-acting cylinder uses a 1/4" air port and a 16 mm rod. At 0.5 MPa it provides 628.3 N push and 527.8 N pull. At 0.7 MPa it provides 879.6 N push and 738.9 N pull. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external adjuster shortens the extend stroke by up to 75 mm on-site, giving a usable extend range of 125 to 200 mm; retract remains the full 200 mm. The -S suffix means a piston magnet is built-in for CMSG, DMSG or EMSG sensors. Fixed TPU bumpers decelerate the stroke ends but do not lock the load.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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