Airtac MFJ Adjustable Mini Cylinder MFJ40X60-50
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ40X60-50 is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø40mm bore and 60mm 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
- Stroke60 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 MFJ40X60-50
Trimming the extend stroke by up to 50 mm directly on the machine, the AirTAC MFJ40X60-50 eliminates the need to swap cylinders during line changeovers or trial fits. This JIS-standard round-body mini cylinder uses a 40 mm bore and a riveted SUS304 stainless barrel with aluminium covers to deliver 628.3 N of push force at 0.5 MPa.
Because the body is inherently shorter than a comparable ISO 6432 unit for the same 60 mm stroke, it saves valuable mounting length in tight setups. The external adjuster sets the end position without adding external stops, yielding a safe working load of roughly 377 N or lifting about 32 kg vertically with a 2:1 margin. Note that this specific SKU lacks a magnet, so it cannot host CMSG, DMSG, or EMSG sensors without switching to the -S variant.
Airtac MFJ Adjustable Mini Cylinder MFJ40X60-50 Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ40X60-50 |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 60 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 MFJ40X60-50
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×60 | 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 MFJ40X60-50 Is Used
Changeover Dial Adjustment
Dial in the exact 10 to 60 mm extend position during product format changes without machining new hard stops, leveraging the 628.3 N push force to shift heavy guide rails.
Prototype Fit-Up Rigs
Find the optimal end-of-stroke contact point on trial assemblies by turning the external adjuster, safely moving test masses up to 32 kg vertically.
Variable Position Clamping
Secure different sized workpieces on a single fixture by shortening the extend stroke up to 50 mm on the fly, ensuring consistent clamping without reprogramming the cycle.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ40X60-50 the Right Cylinder?
When sizing between the two available bores, the MFJ40 provides 628.3 N of push at 0.5 MPa against the 402.2 N of the MFJ32, making this 40 mm bore the right pick when you need that extra thrust margin for moving heavier fixtures. The 50 mm adjustable window is ideal for commissioning stages where the exact extend endpoint is unknown or frequently altered. Mounting options include LB foot, FA flange, and TC trunnion (with no SDB or back-cover available on this adjustable build). Air enters via a 1/4" port, and fixed TPU bumpers decelerate the stroke ends. Remember that the adjuster only shortens the extend stroke, and the cylinder will drift if air pressure is lost; for load holding, install an external rod lock or pilot check valve rather than relying on the bumper.
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 MFJ40X60-50 FAQ
This 40 mm bore double-acting cylinder features a 1/4" air port and a 16 mm 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.
The external adjuster shortens the extend stroke by up to 50 mm on-site, giving a usable extend range of 10 to 60 mm, while the retract remains full. Fixed TPU bumper pads decelerate the stroke ends but do not act as a lock; the piston will drift on air loss, so use an external rod lock or pilot check valve for load holding.
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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.
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Most inquiries answered within 7-8 hours.
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