Airtac MFCJ Adjustable Mini Cylinder MFCJ20X200-40S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X200-40S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 200mm stroke, 1/8" 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.
- BoreØ20 mm
- Stroke200 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM8×1.25
- 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 MFCJ20X200-40S
Tune extend travel on-site with the AirTAC MFCJ20X200-40S, a JIS-standard round-body mini cylinder that lets you shorten the extend end by up to 40 mm (usable 160-200 mm) while retract stays full. The SUS304 stainless barrel and riveted aluminium covers form a compact body that is physically shorter than an ISO 6432 unit for the same 20 mm bore and 200 mm stroke, saving mounting length and resisting mild washdown.
Driven by filtered air at 0.15-1.0 MPa through a 1/8" port, the Ø8 mm rod delivers 157 N push and 131.9 N pull at 0.5 MPa (219.8 N / 184.7 N at 0.7 MPa). Needle-set variable air cushions at both ends soak up high-speed shock for smooth 30-800 mm/s motion. With a safe working load around 94 N, it lifts about 8 kg vertically with a 2:1 margin. The -S suffix means a built-in magnet supports CMSG, DMSG or EMSG switches.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X200-40S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X200-40S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 200 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 132 N |
| 0.7 MPa | 220 N | 185 N |
| Max (@1.0 MPa) | 32 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 MFCJ20X200-40S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | 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 MFCJ20X200-40S Is Used
Light-Part Trial Fit
Dial in the 160-200 mm extend position on a 94 N assembly toolhead, letting the needle cushion absorb end-of-stroke shock during rapid changeovers.
Small Divert Arm
Actuate a lightweight divert gate at up to 800 mm/s; the 40 mm adjuster window fine-tunes the push distance without remounting the cylinder.
Carton Stopper
Arrest small cartons smoothly using the variable air cushion, relying on the 157 N push force to halt items without slamming.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X200-40S the Right Cylinder?
Weigh the MFCJ20X200-40S against the next bore up: this 20 mm bore gives 157 N push at 0.5 MPa, while a 25 mm bore yields 245.3 N. Choose the 20 mm when your payload is light (around 94 N safe load) and you need a physically smaller footprint. Both bores share the 1/8" port and 30-800 mm/s speed range.
Pick this adjustable-stroke, variable-cushion build for high-speed changeovers or shock-sensitive trial fits where you must dial in the exact 160-200 mm extend position and decelerate smoothly. Mount via LB foot, FA flange or TC trunnion (no SDB). The cushion only decelerates near stroke end—it is not a lock; for a held load, add an external rod lock or pilot check valve.
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 MFCJ20X200-40S FAQ
It has a 1/8" port and Ø8 mm rod. At 0.5 MPa it pushes 157 N and pulls 131.9 N; at 0.7 MPa it pushes 219.8 N and pulls 184.7 N. The theoretical max force is 32 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 40 mm on-site (usable 160-200 mm); retract remains full. The -S suffix means a built-in magnet supports CMSG, DMSG and EMSG switches. The needle air cushion only decelerates the piston near stroke end—it is not a lock.
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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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