Airtac MFCJ Adjustable Mini Cylinder MFCJ40X50-10S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X50-10S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 50mm 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
- Stroke50 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 MFCJ40X50-10S
Tune both the extend end-point and the end-of-stroke deceleration on-site with this JIS-standard round-body mini cylinder. The MFCJ40X50-10S features a SUS304 stainless barrel with riveted aluminium covers, giving you a 10 mm adjustable window to shorten the 50 mm extend stroke, while the needle-set variable air cushion at both ends soaks up high-speed shock. It runs on a 1/4" port with a 16 mm rod.
In the 40 mm bore class, this double-acting actuator delivers a push force of 628.3 N and a pull force of 527.8 N at 0.5 MPa. That translates to a safe working load of roughly 377 N, letting you lift about 32 kg vertically with a 2:1 safety margin. The -S suffix means a built-in magnet is present, enabling CMSG, DMSG, or EMSG sensors for position confirmation.
Airtac MFCJ Adjustable Mini Cylinder MFCJ40X50-10S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X50-10S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 MFCJ40X50-10S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 MFCJ40X50-10S Is Used
High-Speed Forming Press
Handles the 628.3 N push force required to drive small stamping dies, using the 10 mm stroke adjuster to dial in the exact contact depth on the fly.
Package Divert Arm
Actuates a routing gate at high speed while the variable air cushion prevents harsh slams that could destabilise heavy cartons.
Pallet Positioning Stop
Halts incoming pallets using the 32 kg vertical lift capacity, relying on the external adjuster to set the stop height perfectly during changeovers.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X50-10S the Right Cylinder?
When sizing between the two available bores, the MFCJ40 provides 628.3 N of push force at 0.5 MPa compared to the MFCJ32 at 402.2 N, making the 40 mm bore the better choice for heavier moving masses. The adjustable stroke and dual variable air cushions are ideal for high-speed changeovers or trial fits where the exact extend position and end-of-stroke shock both need fine-tuning. Note that the air cushion only decelerates the piston near the end of travel; it does not lock or hold the load. If you need to prevent drift on air loss, add an external rod lock or pilot check valve. Mounting options include LB foot, FA flange, and TC trunnion (no SDB). The body is shorter than an ISO 6432 cylinder for the same stroke, saving valuable machine space.
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 MFCJ40X50-10S FAQ
This 40 mm bore cylinder uses a 1/4" port and a 16 mm rod. It generates a push force of 628.3 N and a pull force of 527.8 N at 0.5 MPa. At 0.7 MPa, the push force is 879.6 N and the pull force is 738.9 N. The theoretical maximum force is 128.1 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 10 mm on-site, giving a usable extend range of 40-50 mm. The needle-set variable air cushion at both ends only decelerates the piston near stroke end to absorb shock; it is not a brake. Because the -S magnet is present, you can fit CMSG, DMSG, or EMSG sensors for end-position confirmation.
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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