Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-100S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-100S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 100mm 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
- Stroke100 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM8×1.25
- CushionVariable air cushion, both ends
About the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-100S
Dial in the extend position on-site with the MFCJ20X100-100S, a JIS-standard round-body mini cylinder featuring a 100 mm adjustable stroke window and needle-set variable air cushions at both ends. The external adjuster shortens the extend end by up to 100 mm to perfect your stroke, while the cushions soak up high-speed end-of-travel shock. Driven by a Ø8 mm piston rod and a 1/8" port, it delivers 157 N of push force at 0.5 MPa, yielding a safe working load of roughly 94 N or about 8 kg of vertical lift with a 2:1 margin.
Built with a SUS304 stainless steel barrel and riveted aluminium covers, this double-acting actuator resists mild corrosion and washdown environments. For the same bore and stroke, the MF body is shorter than an ISO 6432 cylinder, saving valuable mounting length. The -S suffix denotes a built-in piston magnet, fully compatible with CMSG, DMSG, and EMSG reed or electronic switches for position feedback.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-100S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-100S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 100 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 MFCJ20X100-100S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×100 | 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 MFCJ20X100-100S Is Used
Micro-Clamp Positioning
Fine-tune the extend stroke by up to 100 mm during machine changeovers to seat delicate 8 kg workpieces without crushing them.
Light Diverting Arms
Absorb the impact of high-speed package routing using the needle-set air cushion while hitting exact stop points on the fly.
Lab Test Actuators
Perfect for trial setups where the exact extend length and end-of-stroke shock must be dialed in repeatedly for sensitive lab equipment.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-100S the Right Cylinder?
Choose between the 20 mm and 25 mm bores based on your exact force requirements. This MFCJ20X100-100S provides 157 N push and 131.9 N pull at 0.5 MPa, whereas the larger MFCJ25 offers 245.3 N of push force at the same pressure. If your high-speed changeover demands fall under 94 N of safe working load, the 20 mm bore is the optimal, lightweight choice; step up to the 25 mm if you need extra thrust margin.
The 100 mm adjustable window and variable air cushion shine in shock-sensitive trial fits where both the end position and deceleration need tuning. Note that the cushion only decelerates the piston near stroke end—it is not a lock or brake. The cylinder will drift on air loss, so fit an external rod lock or pilot-operated check valve for suspended loads. Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover mount is available).
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 MFCJ20X100-100S FAQ
This 20 mm bore cylinder features a 1/8" air port and an Ø8 mm rod. It generates 157 N push / 131.9 N pull at 0.5 MPa, 219.8 N push / 184.7 N pull at 0.7 MPa, and a theoretical maximum of 32 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 100 mm on-site, while the variable air cushion at both ends decelerates the piston near the end of travel. The -S suffix means it has a built-in magnet for CMSG, DMSG, or EMSG sensors; a non-S SKU cannot take a sensor.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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