Airtac MFCJ Adjustable Mini Cylinder MFCJ32X40-20
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ32X40-20 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø32mm bore and 40mm stroke, 1/4" 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.
- BoreØ32 mm
- Stroke40 mm
- Port size1/4"
- Acting typeDouble acting, adjustable stroke + cushion
- Rod threadM10×1.25
- 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 MFCJ32X40-20
Trim the extend stroke by up to 20 mm on site and dial in a needle air cushion at each end with this double-acting mini cylinder. The MFCJ32X40-20 delivers a 402.2 N push force at 0.5 MPa through a 1/4" port, making it ideal for high-speed changeovers where both the end position and end-of-stroke shock need tuning.
Built as a JIS-standard round-body unit with a SUS304 stainless barrel and riveted aluminium covers, it is noticeably shorter than an ISO 6432 cylinder for the same 32 mm bore and 40 mm stroke. This specific SKU lacks a magnet, so it cannot take CMSG, DMSG or EMSG sensors. The cushion only decelerates the piston near the ends; it will not hold a load on air loss.
Airtac MFCJ Adjustable Mini Cylinder MFCJ32X40-20 Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ32X40-20 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 40 mm |
| Acting type | Double acting, adjustable stroke + cushion |
| Port size | 1/4" |
| Rod thread | M10×1.25 |
| 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 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 MFCJ32X40-20
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 32 | Bore size in mm. |
| ×40 | 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 MFCJ32X40-20 Is Used
Adjustable Push Operations
Dial in the exact 20 to 40 mm extend distance for pressing or locating pins, using the 402.2 N push force to seat components without over-traveling.
High-Speed Diverting
Tune the needle air cushion to absorb shock as the 12 mm rod rapidly redirects light packages, preventing end-cap damage over thousands of cycles.
Lab Test Actuators
Perfect for experimental rigs needing on-site stroke tweaks and smooth deceleration, lifting roughly 20.5 kg vertically with a 2:1 safety margin.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ32X40-20 the Right Cylinder?
Choose the MFCJ32 if you need around 402.2 N of push force at 0.5 MPa, or step up to the MFCJ40 for 628.3 N. Going down to the MFCJ25 drops the push force to 245.3 N. The external adjuster on this 32 mm bore lets you shorten the extend stroke within a 20 mm window, perfect for trial fits where the exact endpoint varies.
Mount this cylinder using LB foot, FA flange or TC trunnion brackets. Because this non-S model has no magnet, position sensing is impossible. Note that the air cushion acts as a decelerator, not a brake. To hold a vertical load during air loss, install an external rod lock or pilot 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 MFCJ32X40-20 FAQ
This 32 mm bore cylinder features a 1/4" port and a 12 mm rod with an M10x1.25 male thread. It generates 402.2 N push and 345.6 N pull at 0.5 MPa, 563 N push and 483.8 N pull at 0.7 MPa, with a theoretical maximum of 82 kgf at 1.0 MPa.
No, this specific SKU does not include a magnet, so CMSG, DMSG or EMSG switches cannot be used. You would need the -S variant for sensing. The external adjuster shortens the extend stroke by up to 20 mm, but it does not lock the position mid-stroke.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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