Airtac MFCJ Adjustable Mini Cylinder MFCJ40X225-10S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X225-10S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 225mm 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
- Stroke225 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 MFCJ40X225-10S
Dial in exact end positions and absorb high-speed shock with the AirTAC MFCJ40X225-10S, a JIS-standard round-body mini cylinder built with a SUS304 stainless barrel and riveted aluminium covers. An external adjuster lets you shorten the extend stroke by up to 10 mm on site, giving a usable 215-225 mm extension window, while the needle-set variable air cushion at both ends soaks up end-of-stroke impact. It features a 16 mm rod, an M14x1.5 male thread, and a 1/4" port.
Delivering 628.3 N of push force at 0.5 MPa, this double-acting actuator yields a safe working load of roughly 377 N, lifting about 32 kg vertically with a 2:1 safety margin. The riveted stainless body is shorter than an ISO 6432 cylinder for the same bore and stroke, saving mounting length while resisting mild washdown corrosion. Because this SKU includes the -S magnet, it is fully ready for CMSG, DMSG, or EMSG position switches.
Airtac MFCJ Adjustable Mini Cylinder MFCJ40X225-10S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X225-10S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 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 MFCJ40X225-10S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×225 | 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 MFCJ40X225-10S Is Used
High-Speed Forming Press
Uses the 628.3 N push force to drive stamping dies, relying on the tuned variable air cushion to absorb the 225 mm stroke shock without rebound.
Package Divert Arm
Adjusts the extend stroke by up to 10 mm to match varying box sizes on the fly, while the 377 N safe working load easily pushes heavy cartons.
Pallet Lift Station
Lifts approximately 32 kg vertically using the 40 mm bore, with the -S magnet triggering DMSG sensors to confirm the full extend position.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X225-10S the Right Cylinder?
When sizing these adjustable-stroke actuators, compare the real thrust: this 40 mm bore pushes 628.3 N and pulls 527.8 N at 0.5 MPa, whereas the smaller MFCJ32 delivers 402.2 N of push force. Choose the 40 mm bore when moving heavier fixtures or overcoming high friction, and use the 10 mm external adjuster to perfect the extend endpoint during trial fits or high-speed changeovers without machining new stops. The variable air cushion needle must be tuned to decelerate the load smoothly before the end cap.
Mounting options include LB foot, FA flange, and TC trunnion (there is no SDB or back-cover option on this build). Remember that the air cushion only decelerates the piston near stroke end—it is not a lock or brake. If the application must hold a vertical load on air loss, add an external rod lock or pilot-operated check valve, as the piston will drift otherwise.
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 MFCJ40X225-10S FAQ
This 40 mm bore double-acting cylinder has a 1/4" port and generates 628.3 N push / 527.8 N pull at 0.5 MPa, and 879.6 N push / 738.9 N pull at 0.7 MPa. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 10 mm (usable range 215-225 mm) to fine-tune the end position. The variable air cushion at both ends is needle-set to decelerate the piston smoothly at high speed; it is not a braking lock. The included -S magnet supports CMSG, DMSG, and EMSG sensors.
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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