Airtac MFCJ Adjustable Mini Cylinder MFCJ40X200-20
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ40X200-20 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 200mm 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
- Stroke200 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 MFCJ40X200-20
Dial in exact end positions and absorb high-speed shocks with the AirTAC MFCJ40X200-20, a JIS-standard round-body mini cylinder built with a SUS304 stainless barrel and riveted aluminium covers. An external adjuster shortens the extend stroke by up to 20 mm on-site, giving a usable 180-200 mm extend window, while a needle variable air cushion at both ends soaks up end-of-stroke kinetic energy. The 1/4" port and Ø16 rod deliver a robust 628.3 N push force at 0.5 MPa, making it ideal for heavier trial-fit assemblies.
This 40 mm bore design yields a safe working load of roughly 377 N (about 60% of the 0.5 MPa push force) and lifts approximately 32 kg vertically with a 2:1 safety margin. For the same bore and stroke, the riveted MF body is shorter than an ISO 6432 cylinder, saving valuable mounting length without conforming to that standard. Note this SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG sensors.
Airtac MFCJ Adjustable Mini Cylinder MFCJ40X200-20 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ40X200-20 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 200 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 MFCJ40X200-20
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×200 | 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 MFCJ40X200-20 Is Used
Heavy Clamping Trial Fits
Tune the 20 mm extend window on-site to find the exact clamping position for thick workpieces, relying on the 628.3 N push force to secure the part during machining.
High-Speed Diverting
Use the needle variable air cushion to silently stop the 200 mm stroke at high speed when pushing heavier pallets off a main conveyor line without rebound.
Carton Forming Stops
Adjust the extend endpoint precisely for varying box sizes during format changeovers, letting the 40 mm bore power through stiff cardboard folding mechanisms.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ40X200-20 the Right Cylinder?
When choosing between the two available bores, compare the 628.3 N push force of this MFCJ40 against the 402.2 N push force of the MFCJ32 at 0.5 MPa. Select the 40 mm bore if your high-speed changeovers involve shifting heavier payloads or overcoming significant friction. The 20 mm adjustable window is highly useful for commissioning shock-sensitive trial fits where the exact extend endpoint must be tuned physically on the machine.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover code is available). Remember that the variable air cushion only decelerates the piston near the stroke end; it is not a lock or brake. If gravity or air loss could cause the load to drift, you must add an external rod lock or pilot-operated check valve. Because this specific model has no -S magnet, position sensing is not possible without switching to the magnet-equipped variant.
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 MFCJ40X200-20 FAQ
This 40 mm bore cylinder features a 1/4" port and a Ø16 mm rod. The double-acting thrust is 628.3 N push and 527.8 N pull at 0.5 MPa, or 879.6 N push and 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 20 mm (usable range 180-200 mm), while the variable air cushion at both ends decelerates the piston near the ends to absorb shock. This specific SKU lacks the -S magnet, so it cannot accept CMSG, DMSG, or EMSG sensors.
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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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