Airtac MFCJ Adjustable Mini Cylinder MFCJ40X30-30S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X30-30S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 30mm 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
- Stroke30 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 MFCJ40X30-30S
Dial in exact end positions on the fly with the AirTAC MFCJ40X30-30S, a JIS-standard round-body mini cylinder featuring a 30 mm extend-stroke adjuster and needle-set variable air cushions at both ends. The SUS304 stainless barrel and riveted aluminium covers yield a shorter mounting envelope than an ISO 6432 unit, resisting mild washdown while saving space. A 1/4" port and M14x1.5 male rod thread equip the 16 mm piston rod for robust 40 mm bore duty.
Generating 628.3 N of push force at 0.5 MPa, this double-acting actuator easily handles a safe working load of roughly 377 N or lifts about 32 kg vertically with a 2:1 margin. The -S suffix denotes a built-in magnet for CMSG, DMSG or EMSG switches, enabling position sensing. The external adjuster shortens the extend stroke within its 30 mm window for trial fits, while the cushions absorb high-speed shock—neither component locks the load.
Airtac MFCJ Adjustable Mini Cylinder MFCJ40X30-30S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X30-30S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 MFCJ40X30-30S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 MFCJ40X30-30S Is Used
High-Speed Component Press
Leveraging 628.3 N of thrust at 0.5 MPa, the 30 mm stroke adjuster dials in the exact pressing depth, while the needle air cushion prevents harsh impact during rapid cycling.
Dynamic Transfer Divert
The shorter JIS body saves space along the line, and the variable cushion smoothly halts the 40 mm piston at high speed without bouncing lightweight packages.
Vertical Lift Stops
Lifting about 32 kg with a 2:1 margin, the built-in -S magnet confirms retraction via a DMSG switch, and the 30 mm adjuster sets the precise extend stop height.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X30-30S the Right Cylinder?
When sizing a 40 mm bore against the 32 mm option, the MFCJ40 delivers 628.3 N push at 0.5 MPa compared to 402.2 N for the MFCJ32, making it the clear choice when your changeover demands higher thrust. Choose this adjustable-stroke, variable-cushion build for high-speed cycling where both the exact extend endpoint and end-of-stroke deceleration must be tuned on-site. Mount via LB foot, FA flange or TC trunnion (no SDB or back-cover option exists).
Because the -S magnet is present, you can directly mount CMSG, DMSG or EMSG sensors for switching. Remember that the air cushion only decelerates the piston near stroke end—it does not function as a brake. If gravity or air loss could cause the load to drift, install an external rod lock or pilot check valve to hold position securely.
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 MFCJ40X30-30S 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, 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 for trial fits, while the variable air cushion at both ends decelerates the piston to reduce shock at speeds up to 800 mm/s. The -S magnet allows CMSG, DMSG and EMSG sensors to be fitted.
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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