Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-50S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-50S 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 MFCJ20X150-50S
Dial in the exact extend stop on-site with the AirTAC MFCJ20X150-50S, a JIS-standard round-body mini cylinder offering a 50 mm adjustable stroke window (usable extend 100-150 mm). The riveted SUS304 stainless barrel and aluminium covers form a compact body that is physically shorter than a comparable ISO 6432 unit, saving valuable mounting length while resisting mild corrosion and washdown.
Driven by filtered air at 1/8" ports, this double-acting actuator delivers 157 N of push force at 0.5 MPa and features a needle-set variable air cushion at both ends to soak up high-speed end-of-stroke shock. The built-in piston magnet (-S) directly supports CMSG, DMSG, and EMSG position switches. For sizing, it yields a safe working load of roughly 94 N, lifting about 8 kg vertically with a 2:1 margin.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-50S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-50S |
|---|---|
| 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 MFCJ20X150-50S
| 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 MFCJ20X150-50S Is Used
Lightweight Component Pressing
Ideal for seating small electronic connectors or pins. The 50 mm stroke adjuster lets you set the exact 100-150 mm extend depth on the fly, while the variable air cushion prevents impact damage at high cycling speeds.
Package Diverting Stops
Use as an adjustable stop gate on a packaging line. The 157 N push force at 0.5 MPa easily halts lightweight cartons, and the needle cushion ensures quiet, smooth retraction without slamming.
Lab Automation Positioning
Perfect for trial-fit changeovers in lab automation where the exact extend position varies by experiment. The SUS304 stainless body withstands routine washdown, and the -S magnet enables precise end-position sensing.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-50S the Right Cylinder?
When choosing between bores, this 20 mm variant provides 157 N push at 0.5 MPa, whereas stepping up to an MFCJ25 yields 245.3 N—pick the 20 mm for lighter, faster changeovers and the 25 mm if your payload demands more thrust. The external adjuster is perfect for trial fits where the exact extend position and end-of-stroke shock both need fine-tuning, operating smoothly across a 30-800 mm/s speed range.
Mounting options include LB foot, FA flange, and TC trunnion (with no SDB or back-cover available on this adjustable build). Remember that the variable air cushion only decelerates the piston near the end of travel; it does not function as a lock or brake. If your application must hold a load vertically during air loss, add 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 MFCJ20X150-50S FAQ
This 20 mm bore cylinder features a 1/8" air port and an 8 mm rod with an M8x1.25 male thread. 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 force of 32 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 50 mm on-site (usable range 100-150 mm); retract remains full. The variable air cushion at both ends only decelerates the piston near stroke end to absorb high-speed shock—it is not a lock or brake. The -S magnet supports CMSG/DMSG/EMSG switches for position feedback.
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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