Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-30
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-30 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
- 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 MFCJ20X100-30
Dial in exact end positions and absorb high-speed shock with the AirTAC MFCJ20X100-30. This double-acting JIS-standard round-body mini cylinder features a SUS304 stainless steel barrel and riveted aluminium covers, giving you a 30 mm external adjustment window to shorten the extend stroke on-site. It delivers 157 N of push force at 0.5 MPa.
The integrated variable air cushion at both ends soaks up end-of-stroke impact for smooth operation. For the same bore and stroke, this compact body is shorter than an ISO 6432 cylinder, saving valuable mounting length. This non-magnet SKU cannot take a sensor; add the -S variant for CMSG/DMSG/EMSG switches. It uses a 1/8" port.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-30 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-30 |
|---|---|
| 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 MFCJ20X100-30
| 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 MFCJ20X100-30 Is Used
Stroke Trial Fitting
Dial the extend stroke down by up to 30 mm during prototype assembly to find the perfect contact point without swapping cylinders.
High-Speed Ejection
Use the variable air cushion to decelerate the 157 N push force smoothly at the end of fast part-ejection cycles.
Compact Clamping
Fit the short JIS body into tight machinery to clamp delicate components, adjusting the stroke precisely to avoid crushing.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X100-30 the Right Cylinder?
When sizing, compare this 20 mm bore offering 157 N push at 0.5 MPa against the larger MFCJ25 at 245.3 N. Choose the 20 mm when space is tight and the load is light. The 30 mm adjustable window and needle air cushion excel in high-speed changeovers where both stroke length and end shock need tuning. Mount via LB foot, FA flange, or TC trunnion. Remember that air loss causes piston drift; the cushion only decelerates, so add an external rod lock for held loads.
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 MFCJ20X100-30 FAQ
It uses a 1/8" port and an 8 mm rod. The double-acting thrust is 157 N push and 131.9 N pull at 0.5 MPa, or 219.8 N push and 184.7 N pull at 0.7 MPa. The theoretical maximum force is 32 kgf at 1.0 MPa.
This specific SKU lacks a magnet and cannot take a sensor; you need the -S version for CMSG/DMSG/EMSG switches. Also, the air cushion only decelerates the piston near stroke end and does not act as a lock, so the piston will drift on air loss.
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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