Airtac MFJ Adjustable Mini Cylinder MFJ40X150-50
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ40X150-50 is a genuine double acting, adjustable stroke JIS-standard round-body mini air cylinder with a Ø40mm bore and 150mm 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
- Stroke150 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 MFJ40X150-50
Trim the extend end by up to 50 mm directly at the fixture with the AirTAC MFJ40X150-50, a JIS-standard round-body mini cylinder built for on-site positioning. The riveted aluminium covers and SUS304 stainless barrel yield a shorter mounting envelope than an ISO 6432 unit of identical bore and stroke, while resisting mild washdown. A 1/4" port and M14x1.5 male rod thread handle the 628.3 N push force at 0.5 MPa.
Because the external adjuster only shortens the extend stroke, you can dial in the exact 100 to 150 mm travel during line changeovers without swapping hardware. This 40 mm bore generates 879.6 N at 0.7 MPa, translating to a safe working load around 377 N or a 32 kg vertical lift with a 2:1 margin. Fixed TPU bumpers absorb end-of-stroke impact; note this SKU lacks the -S magnet, so it cannot host CMSG or DMSG sensors.
Airtac MFJ Adjustable Mini Cylinder MFJ40X150-50 Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ40X150-50 |
|---|---|
| Series | MFJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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 MFJ40X150-50
| MFJ | JIS-standard round-body mini cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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 MFJ40X150-50 Is Used
Changeover Stations
Fine-tune the 100 to 150 mm extend stroke on the fly to accommodate different part lengths without machining new hard stops.
Trial Fit Rigs
Leverage the 628.3 N push force to seat components, using the 50 mm adjuster to dial in the exact contact position during prototype builds.
Variable Position Stops
Act as a robust 40 mm bore stopper that lifts about 32 kg vertically, adjusting the extend endpoint quickly for mixed-product lines.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ40X150-50 the Right Cylinder?
Choose the 40 mm bore over the 32 mm variant when you need serious push force: the MFJ40 delivers 628.3 N at 0.5 MPa versus 402.2 N for the MFJ32. The 50 mm adjustable window is ideal for trial fits where the exact extend position is unknown until commissioning. Mount via LB foot, FA flange, or TC trunnion (SDB is unavailable). Remember that the bumper decelerates the stroke but does not lock the rod—if air drops, the piston drifts, so fit an external rod lock or pilot check valve for suspended loads.
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 MFJ40X150-50 FAQ
This 40 mm bore cylinder features a 1/4" port and an M14x1.5 male rod thread. It delivers 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 max of 128.1 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 50 mm on-site without changing the cylinder body. Fixed TPU bumpers only decelerate the stroke end; they do not lock the piston. For load holding on air loss, install an external rod lock or pilot check valve.
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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