Airtac MFJ Adjustable Mini Cylinder MFJ40X150-30
The AirTAC Airtac MFJ Adjustable Mini Cylinder MFJ40X150-30 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 MFJ40X150-30
Trimming the extend end by up to 30 mm on site, the AirTAC MFJ40X150-30 sets its usable forward travel between 120 and 150 mm without swapping hardware. This JIS-standard round-body mini cylinder pairs a SUS304 stainless steel barrel with riveted aluminium covers, yielding a mounting envelope that is noticeably shorter than a comparable ISO 6432 unit. A 1/4" port and M14x1.5 male rod thread feed the 16 mm piston rod.
Delivering 628.3 N of push force at 0.5 MPa, this 40 mm bore actuator handles firm clamping and lifting tasks. The fixed TPU bumper pads absorb end-of-stroke impact across the 30-800 mm/s speed range. Note that this specific SKU lacks the -S magnet, so it cannot host CMSG, DMSG or EMSG sensors.
Airtac MFJ Adjustable Mini Cylinder MFJ40X150-30 Technical Specifications
| Model | Airtac MFJ Adjustable Mini Cylinder MFJ40X150-30 |
|---|---|
| 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 MFJ40X150-30
| 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 MFJ40X150-30 Is Used
Changeover Stations
Dial in the 120 to 150 mm extend length during product line changeovers, using the 30 mm adjuster to set new end positions without machining external stops.
Trial Fit Rigs
Leverage the 628.3 N push force to seat components on test fixtures, fine-tuning the forward stroke on site until the exact kinematic distance is proven.
Variable Position Pressing
Apply up to 879.6 N at 0.7 MPa for light pressing duties, adjusting the extend end by up to 30 mm to accommodate different material thicknesses on the same jig.
Is the Airtac MFJ Adjustable Mini Cylinder MFJ40X150-30 the Right Cylinder?
When sizing these actuators, compare the thrust directly: this 40 mm bore pushes 628.3 N at 0.5 MPa, whereas the smaller MFJ32 provides 402.2 N. If your press fit or lift demands roughly 377 N of safe working load (about 60 percent of the 0.5 MPa push figure) or needs to hoist around 32 kg vertically with a 2:1 margin, the MFJ40X150-30 fits cleanly. The 30 mm adjuster window is ideal for trial installations where the exact end position is not yet finalised.
Mounting options include LB foot, FA flange and TC trunnion brackets, with no SDB or back-cover provision. Because air pressure alone cannot arrest drift, add an external rod lock or pilot check valve if the load must be held during a pressure drop. For applications needing position feedback, specify the -S magnet version to enable sensing.
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 MFJ40X150-30 FAQ
This 40 mm bore double-acting cylinder uses a 1/4" port. It generates 628.3 N push and 527.8 N pull at 0.5 MPa, or 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
An external adjuster shortens the extend stroke by up to 30 mm, letting you set the end position between 120 and 150 mm. The fixed TPU bumpers only decelerate the stroke end; they do not lock the piston. This SKU also lacks the -S magnet, so it cannot accept position sensors.
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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.
Fast Reply
Most inquiries answered within 7-8 hours.
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