Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-20S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-20S 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 MFCJ20X150-20S
Tune both the extend end-point and the end-of-stroke deceleration on-site with this adjustable-stroke, variable-cushion mini cylinder. The external adjuster shortens the extend stroke by up to 20 mm (usable extend 130-150 mm), while the needle air cushion at both ends soaks up high-speed shock for smooth, quiet motion.
Built as a JIS-standard round-body unit with a SUS304 stainless barrel and riveted aluminium covers, it packs a 20 mm bore and 1/8" port into a body noticeably shorter than an ISO 6432 cylinder. The integrated magnet (-S) supports CMSG/DMSG/EMSG switches. Delivering 157 N push at 0.5 MPa, it handles a safe working load of roughly 94 N, lifting about 8 kg vertically with a 2:1 margin.
Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-20S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-20S |
|---|---|
| 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 MFCJ20X150-20S
| 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 MFCJ20X150-20S Is Used
Lightweight Pick-and-Place
Ideal for moving small components under the 94 N safe working load, using the 20 mm adjust window to dial in the exact extend reach for delicate part transfer.
High-Speed Diverting
Sort light packages at speed while the variable air cushion absorbs end-of-stroke shock, preventing bounce on rapid retract cycles.
Lab Automation Trial Fits
Perfect for prototyping fluid handling rigs where the 130-150 mm extend range must be tuned on-site and the SUS304 barrel resists mild washdown.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ20X150-20S the Right Cylinder?
When sizing this series, weigh the 20 mm bore against the next size up: this MFCJ20 provides 157 N push at 0.5 MPa, whereas the MFCJ25 delivers 245.3 N. Choose the 20 mm bore for lighter, high-speed changeovers where exact positioning and shock absorption must be dialed in on the fly. The 20 mm adjust window is ideal for trial fits where the exact extend end-point is unknown.
Remember that the air cushion only decelerates the piston near the stroke end—it is not a lock or brake. If the machine loses air, the piston drifts, so add an external rod lock or pilot check valve for suspended loads. Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover). The -S magnet enables CMSG, DMSG, or EMSG sensors for position feedback.
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 MFCJ20X150-20S FAQ
This 20 mm bore cylinder features a 1/8" port and an 8 mm rod. Theoretical max force is 32 kgf at 1.0 MPa. At 0.5 MPa it pushes 157 N and pulls 131.9 N; at 0.7 MPa it pushes 219.8 N and pulls 184.7 N.
The external adjuster shortens the extend stroke by up to 20 mm (130-150 mm range), and the needle variable air cushion decelerates the piston at both ends. The cushion is not a brake; the piston drifts on air loss, so use an external rod lock for holding. The built-in magnet (-S) supports CMSG/DMSG/EMSG switches.
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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