Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-30S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-30S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø20mm bore and 150mm 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
- Stroke150 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 MFCJ20X150-30S
Dial in exact end positions and absorb high-speed shock with the AirTAC MFCJ20X150-30S. This JIS-standard round-body mini cylinder features a 30 mm external adjuster that shortens the extend stroke on-site (usable range 120-150 mm) alongside a needle-set variable air cushion at both ends. The SUS304 stainless steel barrel and riveted aluminium covers resist mild washdown corrosion while keeping the body shorter than a comparable ISO 6432 unit.
Driven by a 1/8" port and Ø8 mm rod (M8x1.25 male thread), the 20 mm bore generates 157 N of push force at 0.5 MPa. In practical terms, that equates to a safe working load around 94 N, lifting about 8 kg vertically with a 2:1 margin. The -S suffix means a built-in magnet is present, ready for CMSG, DMSG or EMSG position sensing.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-30S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-30S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø20 mm |
| Stroke | 150 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 MFCJ20X150-30S
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 20 | Bore size in mm. |
| ×150 | 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 MFCJ20X150-30S Is Used
Light-Part Trial Fits
Fine-tune the extend stroke by up to 30 mm during automated assembly changeovers, using the needle cushion to softly seat sub-8 kg components without impact damage.
High-Speed Diverter Gates
Adjust the push length on the fly for varying package sizes on a line, relying on the variable air cushion to absorb shock during rapid 150 mm cycling.
Lab Positioning Rigs
Set precise end-stops for sensor calibration jigs where the exact 120-150 mm travel needs on-site tweaking and repeatable, cushioned deceleration.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-30S the Right Cylinder?
Weigh the MFCJ20 against the MFCJ25 to match your force needs precisely. At 0.5 MPa this 20 mm bore delivers 157 N push and 131.9 N pull; stepping up to the MFCJ25 provides 245.3 N push if your payload is heavier. Both share the 30 mm adjustable window and variable air cushion, making them ideal for high-speed changeovers where trial fits require tuning both the stroke length and end-of-stroke deceleration.
Mounting options include LB foot, FA flange and TC trunnion (no SDB or back-cover code). Remember the air cushion only decelerates the piston near the end of travel—it is not a brake. If the load must hold position on air loss, fit an external rod lock or pilot-operated 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 MFCJ20X150-30S FAQ
This 20 mm bore cylinder uses a 1/8" port. 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 (usable range 120-150 mm); retract remains full length. The -S suffix denotes a built-in magnet for CMSG, DMSG or EMSG switches. The air cushion only decelerates the piston and does not lock the load.
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.
Related AirTAC MFCJ Cylinders
Request a Quote for Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-30S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.