Airtac MFJ Adjustable Mini Cylinder MFJ40X160-40
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ40X160-40 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 MFJ40X160-40
Fine-tune your extend end position on-site with the AirTAC MFJ40X160-40, 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 40 mm, giving a usable extend range of 120 to 160 mm without buying a new unit or adding external stops. This riveted construction is shorter than an ISO 6432 cylinder for the same 40 mm bore and 160 mm stroke, saving valuable mounting length while resisting mild corrosion and washdown.
Delivering robust thrust, this double-acting 40 mm bore generates 628.3 N of push force at 0.5 MPa. This translates to a safe working load of about 377 N, or roughly 32 kg of vertical lift with a 2:1 margin. The 1/4" port and 16 mm rod handle dynamic loads at speeds of 30-800 mm/s, decelerated at the ends by fixed TPU bumper pads. Note this SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG sensors.
Airtac MFJ Adjustable Mini Cylinder MFJ40X160-40 Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ40X160-40 |
|---|---|
| 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 MFJ40X160-40
| 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 MFJ40X160-40 Is Used
Changeover Dial-In
Use the 40 mm extend window to shift the push end point during product changeovers, accommodating new fixture heights without machining new hard stops.
Prototype Trial Fits
Leverage the 628.3 N push force to seat test components, adjusting the extend stroke from 120 to 160 mm on the fly to find the optimal contact position.
Variable Position Stops
Set precise end-of-stroke limits for pressing or locating tasks, relying on the 16 mm rod to handle the impact while the external adjuster sets the depth.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ40X160-40 the Right Cylinder?
When sizing these adjustable cylinders, compare both bores with real figures: the MFJ40 provides 628.3 N push at 0.5 MPa, whereas the smaller MFJ32 offers 402.2 N. Choose the 40 mm bore when moving heavier fixtures, and use the 40 mm adjustment window to dial in the exact 120-160 mm extend position during trial fits or line changeovers where the final stop is not yet final.
Mount this JIS round-body via LB foot, FA flange, or TC trunnion (there is no SDB or back-cover option). Remember that fixed TPU bumpers only decelerate the stroke end; they do not lock the piston. If air pressure drops, the load drifts, so fit an external rod lock or pilot check valve for holding. For position feedback, you must switch to the -S magnet variant to use 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 MFJ40X160-40 FAQ
This 40 mm bore cylinder has a 1/4" port and a 16 mm rod. At 0.5 MPa it pushes with 628.3 N and pulls with 527.8 N. At 0.7 MPa the push is 879.6 N and pull is 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 40 mm on-site, giving a usable range of 120-160 mm. Fixed TPU bumper pads decelerate the piston at the stroke ends. This SKU has no -S magnet, so it 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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