Airtac MFJ Adjustable Mini Cylinder MFJ40X160-40S
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ40X160-40S 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 MFJ40X160-40S
Trimming the extend stroke by up to 40 mm on site, the MFJ40X160-40S lets you dial in the exact end position between 120 and 160 mm without adding external stops. This JIS-standard round-body mini cylinder features a SUS304 stainless steel barrel and riveted aluminium covers, delivering a compact footprint that is shorter than a comparable ISO 6432 unit for the same 40 mm bore and 160 mm stroke.
Driven by a 16 mm piston rod and 1/4" port, the double-acting design generates 628.3 N of push force at 0.5 MPa. The integrated -S magnet enables CMSG, DMSG, or EMSG switches for position sensing. With a safe working load around 377 N, it reliably lifts about 32 kg vertically with a 2:1 safety margin.
Airtac MFJ Adjustable Mini Cylinder MFJ40X160-40S Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ40X160-40S |
|---|---|
| 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 MFJ40X160-40S
| 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 MFJ40X160-40S Is Used
Changeover Stations
Dial in the extend stroke up to 40 mm during product format changes, using the 628.3 N push force to shift heavy tooling blocks into their new end positions.
Trial Fit Rigs
Perfect for prototype assembly lines where the exact 120 to 160 mm extend point is unknown, allowing on-the-fly shortening without swapping the cylinder.
Variable Position Stops
Acts as an adjustable hard stop for parts handling, leveraging the 32 kg vertical lift capacity to support and position components securely.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ40X160-40S the Right Cylinder?
When sizing these adjustable units, compare the two available bores directly: the MFJ32 delivers 402.2 N of push force at 0.5 MPa, whereas this MFJ40 provides 628.3 N. Choose the 40 mm bore when moving heavier jigs or overcoming high friction. The 40 mm adjuster window is ideal for trial fits and line changeovers where the final extend position is not yet finalised.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover). Note that the fixed TPU bumper pads only decelerate the stroke end; they do not lock the piston. If you need to hold a load vertically during air loss, install an external rod lock or pilot check valve.
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 MFJ40X160-40S FAQ
This 40 mm bore cylinder uses 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.
The external adjuster shortens the extend stroke by up to 40 mm on site, yielding a usable 120 to 160 mm extend range while retract remains full. 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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Genuine AirTAC parts produced by AirTAC factory.
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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