Airtac MFCJ Adjustable Mini Cylinder MFCJ40X150-30S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X150-30S is a genuine double acting, adjustable stroke + cushion 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 + cushion
- Rod threadM14×1.5
- CushionVariable air cushion, both ends
- 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 MFCJ Adjustable Mini Cylinder MFCJ40X150-30S
Tune both the extend end-point and the end-of-stroke deceleration on-site with this 40 mm bore adjustable-stroke mini cylinder. The external adjuster shortens the forward stroke by up to 30 mm (usable range 120-150 mm), while the needle-set variable air cushion at both ends absorbs high-speed shock for smooth, quiet motion. A built-in magnet (-S) enables CMSG, DMSG or EMSG position sensing.
Built as a JIS-standard round-body unit with a SUS304 stainless barrel and riveted aluminium covers, it packs a strong 628.3 N push force at 0.5 MPa into a body that is shorter than a comparable ISO 6432 cylinder. The 1/4" port and M14x1.5 male rod thread handle robust loads, delivering a safe working capacity of roughly 377 N or a 32 kg vertical lift with a 2:1 margin.
Airtac MFCJ Adjustable Mini Cylinder MFCJ40X150-30S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X150-30S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| 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 | Variable air cushion, both ends |
| 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 MFCJ Adjustable Mini Cylinder MFCJ40X150-30S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 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 MFCJ Adjustable Mini Cylinder MFCJ40X150-30S Is Used
High-Speed Diverting
Dial in the 30 mm extend window and tune the needle air cushion to softly push 30 kg cartons on a conveyor without harsh end-of-stroke slamming.
Machine Changeovers
Adapt the forward stroke on the fly for different part sizes on a machining line, relying on the 628.3 N push force to shift heavy fixtures smoothly.
Packaging Feed Adjustments
Fine-tune the extend length and cushioning during format changes to precisely feed packaging materials at high speed without damaging the web.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X150-30S the Right Cylinder?
Choose the MFCJ40 over the MFCJ32 when you need extra thrust: the 40 mm bore pushes 628.3 N at 0.5 MPa, compared to 402.2 N for the 32 mm bore. This adjustable-stroke, variable-cushion design is ideal for high-speed changeovers or shock-sensitive trial fits where you must dial in both the exact extend length and the deceleration rate. Mounting options include LB foot, FA flange, and TC trunnion (no SDB).
Remember that the air cushion and adjuster only decelerate the piston and set the end position; they do not function as a brake. If your application must hold a load vertically during air loss, add an external rod lock or pilot-operated check valve. The -S magnet on this SKU supports CMSG, DMSG, and EMSG switches for exact positioning feedback.
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 MFCJ Adjustable Mini Cylinder MFCJ40X150-30S FAQ
This 40 mm bore cylinder features a 1/4" port and an M14x1.5 male rod 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 30 mm on-site, giving a usable forward range of 120-150 mm, while the retract stroke remains full. The variable air cushion at both ends decelerates the piston near the end of travel to absorb high-speed shock. Note that this cushion only slows the piston; it does not lock or hold the load.
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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