Airtac MFCJ Adjustable Mini Cylinder MFCJ20X60-30S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X60-30S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 60mm 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
- Stroke60 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 MFCJ20X60-30S
Tune both the extend end-point and the end-of-stroke shock on-site with this adjustable-stroke, variable-cushion mini cylinder. The external adjuster shortens the 60 mm extend stroke by up to 30 mm, while the needle air cushion at each end soaks up high-speed impact for smooth, quiet motion. It is a double-acting, JIS-standard round-body unit built with a SUS304 stainless barrel and riveted aluminium covers.
In the 20 mm bore class, this cylinder delivers 157 N of push force and 131.9 N of pull at 0.5 MPa, making it a solid fit for light-duty positioning. The -S suffix means a piston magnet is built in for CMSG, DMSG or EMSG sensors. It uses an M8x1.25 male rod thread and a 1/8" port. For the same bore and stroke, this body is shorter than an ISO 6432 cylinder, saving valuable mounting length without claiming compliance to that standard.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X60-30S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X60-30S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 60 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 MFCJ20X60-30S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×60 | 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 MFCJ20X60-30S Is Used
Light-Duty Trial Fits
Dial in the exact extend position within the 30 mm window during prototype changeovers, relying on the 157 N push force to seat delicate components without overshooting.
Small Part Diverting
Actuate lightweight conveyor gates at speed; the variable air cushion absorbs the end-of-stroke shock to keep the 20 mm bore motion quiet and stable.
Lab Positioning Rigs
Move sample trays or test fixtures with a compact JIS-standard body that saves mounting space, using the built-in magnet for precise end-position confirmation.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X60-30S the Right Cylinder?
When sizing this series, compare the real forces: the 20 mm bore provides 157 N push at 0.5 MPa, while stepping up to the MFCJ25 yields 245.3 N. Choose the 20 mm for compact, low-force tasks and the 25 mm when you need extra thrust. The 30 mm adjustable window is ideal for high-speed changeovers or trial fits where the exact extend position and deceleration both need dialling in.
Remember that the air cushion only decelerates the piston near the end of stroke—it is not a lock or brake. Because a plain double-acting cylinder drifts on air loss, add an external rod lock or pilot-operated check valve if the load must be held. Mounting options include LB foot, FA flange and TC trunnion (no SDB). The -S magnet enables reed or electronic switches, whereas a SKU without S cannot take a sensor.
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 MFCJ20X60-30S FAQ
This 20 mm bore cylinder has an 1/8" port and an M8x1.25 male rod thread. At 0.5 MPa it provides 157 N push and 131.9 N pull. At 0.7 MPa it provides 219.8 N push and 184.7 N pull. The theoretical maximum force is 32 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 30 mm on-site, giving a usable extend range of 30-60 mm; retract remains full. The variable air cushion only decelerates the piston near the end of stroke and does not lock or hold the load. The -S suffix enables 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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