Airtac MFCJ Adjustable Mini Cylinder MFCJ20X65-30S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X65-30S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 65mm 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
- Stroke65 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 MFCJ20X65-30S
Dial in exact extend lengths on-site with the AirTAC MFCJ20X65-30S, a JIS-standard round-body mini cylinder featuring a 30 mm adjustable stroke window (usable extend 35-65 mm) and needle-set variable air cushions at both ends. The riveted SUS304 stainless barrel and aluminium covers yield a shorter mounting envelope than an ISO 6432 unit of the same bore, while resisting mild washdown.
Driven by a 20 mm bore and 1/8" port, this double-acting actuator delivers 157 N of push force at 0.5 MPa, making it a robust fit for compact automation. It includes a built-in magnet (-S) for CMSG, DMSG, or EMSG sensors. Factoring a 2:1 safety margin, it lifts about 8 kg vertically, yielding a safe working load near 94 N.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X65-30S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X65-30S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 65 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 MFCJ20X65-30S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×65 | 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 MFCJ20X65-30S Is Used
Micro-Clamp Actuation
Tunes the 35-65 mm extend to grip delicate electronic components precisely, while the dual air cushions absorb high-speed impact for safe handling.
Light Diverting Stops
Leveraging the 94 N safe working load to halt small packaged goods on a line, adjusting the stroke in seconds to accommodate varying box sizes.
Lab Automation Probes
Uses the SUS304 stainless body for washdown resistance in testing stations, setting the exact 30 mm window to probe samples without crushing them.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X65-30S the Right Cylinder?
Compare the bores directly: this 20 mm bore provides 157 N push at 0.5 MPa, whereas stepping up to the MFCJ25 yields 245.3 N. Choose the 20 mm when spatial constraints and lower mass are priorities. The 30 mm on-site adjuster is invaluable for high-speed changeovers and trial fits where the exact end position and end-of-stroke shock both require tuning.
Note that the air cushion only decelerates the piston near the end of travel; it is not a brake. If the application must hold a load on air loss, add an external rod lock or pilot-operated check valve. For mounting, use LB foot, FA flange, or TC trunnion brackets (no SDB), and leverage the -S magnet for electronic or reed switch sensing.
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 MFCJ20X65-30S FAQ
This 20 mm bore cylinder uses a 1/8" port and an 8 mm rod. It generates 157 N push and 131.9 N pull at 0.5 MPa, 219.8 N push and 184.7 N pull at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 30 mm on-site, while the variable air cushions at both ends decelerate the piston for smooth high-speed motion. The -S suffix means it has a built-in magnet for CMSG, DMSG, or EMSG sensors.
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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