Airtac MFCJ Adjustable Mini Cylinder MFCJ40X30-10
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X30-10 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
About the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X30-10
Trimming the extend stroke by up to 10 mm on site, this double-acting JIS-standard round-body mini cylinder pairs an external adjuster with a variable air cushion at both ends to absorb high-speed shock. The SUS304 stainless steel barrel and riveted aluminium covers yield a shorter mounting envelope than an ISO 6432 unit, resisting mild washdown corrosion while keeping the 1/4" port and M14x1.5 male rod thread compact.
Belonging to the 40 mm bore class, it generates 628.3 N of push force at 0.5 MPa, translating to a safe working load of about 377 N or a 32 kg vertical lift with a 2:1 margin. The needle cushion decelerates the piston near the stroke ends but does not lock the load; add an external rod lock or pilot check valve if you need to hold position on air loss.
Airtac MFCJ Adjustable Mini Cylinder MFCJ40X30-10 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X30-10 |
|---|---|
| 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 MFCJ40X30-10
| 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 MFCJ40X30-10 Is Used
High-Speed Forming Press
Dial in the 10 mm extend window and tune the needle air cushion to decelerate the 628.3 N push force smoothly at the end of each rapid forming cycle.
Package Divert Arm
Adjust the extend end on the fly during product changeovers, letting the variable cushion absorb the shock of high-speed sorting impacts without bounce.
Pallet Stopper Gate
Set the exact stopping distance for mixed pallet sizes while the air cushion softens the end-of-stroke strike, protecting the 40 mm bore mechanism from wear.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X30-10 the Right Cylinder?
Choose this 40 mm bore over the MFCJ32 when your trial fit or changeover demands more thrust: the 32 mm bore delivers 402.2 N push at 0.5 MPa, whereas this 40 mm bore provides 628.3 N, giving you a broader force ceiling for shock-sensitive high-speed positioning. Both bores use a 1/4" port and run at 30-800 mm/s.
Because this specific SKU lacks the -S magnet, it cannot accept CMSG, DMSG or EMSG switches—order the -S variant if you need position sensing. Mounting options include LB foot, FA flange and TC trunnion (no SDB or back-cover code), and the external adjuster sets the end position rather than acting as a mid-stroke brake.
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 MFCJ40X30-10 FAQ
This 40 mm bore cylinder uses a 1/4" 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.
No, this specific SKU does not include a magnet, so it cannot accept CMSG, DMSG or EMSG switches. You must order the -S variant for position sensing. The 10 mm external adjuster shortens the extend stroke, and the variable air cushion decelerates the piston but does not lock the load.
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