Airtac MFJ Adjustable Mini Cylinder MFJ40X160-50
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ40X160-50 is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø40mm bore and 160mm 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
- Stroke160 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 MFJ40X160-50
Trimming the extend end by up to 50 mm on site, this adjustable-stroke round-body mini cylinder lets you set a usable forward travel of 110 to 160 mm without buying a new unit. The 40 mm bore delivers 628.3 N of push force at 0.5 MPa, making it a solid choice for moderate-load positioning. Its 1/4" air port and M14x1.5 male rod thread match standard JIS fittings.
Built with a SUS304 stainless barrel and riveted aluminium covers, the riveted construction resists mild corrosion and washdowns while keeping the total envelope shorter than an equivalent ISO 6432 cylinder. Fixed TPU bumper pads absorb end-of-stroke impacts. Because this specific SKU lacks the -S magnet option, it cannot accept CMSG, DMSG, or EMSG position switches.
Airtac MFJ Adjustable Mini Cylinder MFJ40X160-50 Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ40X160-50 |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 160 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 MFJ40X160-50
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×160 | 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 MFJ40X160-50 Is Used
Changeover Dial-In
Fine-tune the 110 to 160 mm extend position on packaging changeover stations without machining new hard stops, leveraging the 628.3 N push force to shift medium fixtures.
Prototype Trial Fits
Perfect for R&D rigs where the exact extension length is unknown, letting engineers dial in the 50 mm adjustment window to find the optimal operating zone before finalizing the design.
Variable Position Stops
Act as an adjustable end-stop in light assembly machinery, using the 40 mm bore's 527.8 N pull force to retract components while accommodating multiple product sizes on the same line.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ40X160-50 the Right Cylinder?
Choose between the two available bores based on your force requirements: the MFJ32 yields 402.2 N of push force at 0.5 MPa, whereas this MFJ40 provides a stronger 628.3 N. The 50 mm adjustable window is highly useful during trial fits or line changeovers where the exact end position is not yet finalized. You simply dial in the external adjuster to shorten the extend stroke from the 160 mm maximum down to 110 mm.
For mounting, you can use LB foot, FA flange, or TC trunnion brackets (there is no SDB or back-cover option on this build). Remember that the TPU bumpers only decelerate the stroke end; they do not function as a lock. If your application must hold a load vertically during air loss, add an external rod lock or pilot check valve. Also, since this non-S model has no magnet, you must select an -S variant if you need sensor tracking.
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 MFJ40X160-50 FAQ
This 40 mm bore cylinder features a 1/4" air port and a 16 mm piston rod with an M14x1.5 male thread. 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 speed ranges from 30 to 800 mm/s.
An external adjuster shortens the extend stroke by up to 50 mm on site, giving a usable forward range of 110 to 160 mm; the retract stroke remains full. Fixed TPU bumper pads decelerate the piston at the end of travel but do not lock the load. Note that this non-S SKU lacks a magnet and cannot accept 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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