Airtac MFCJ Adjustable Mini Cylinder MFCJ32X40-20S
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ32X40-20S 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 MFCJ32X40-20S
Dial in exact end positions and absorb high-speed shock with the AirTAC MFCJ32X40-20S, a JIS-standard round-body mini cylinder. It features a SUS304 stainless steel barrel with riveted aluminium covers, yielding a shorter mounting envelope than an ISO 6432 unit of the same bore. The external adjuster shortens the extend stroke by up to 20 mm on-site, while needle variable air cushions at both ends soak up end-of-stroke impact.
Driven by a 12 mm rod through a 1/4" port, this double-acting 32 mm bore generates 402.2 N of push force at 0.5 MPa. That translates to a safe working load of roughly 241 N, or lifting about 20.5 kg vertically with a 2:1 safety margin. The -S suffix equips the piston with a magnet for CMSG, DMSG or EMSG switches.
Airtac MFCJ Adjustable Mini Cylinder MFCJ32X40-20S Technical Specifications
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ32X40-20S |
|---|---|
| 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 MFCJ32X40-20S
| 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 MFCJ32X40-20S Is Used
Changeover Dial-In
Perfect for packaging lines needing rapid format swaps; shorten the extend stroke up to 20 mm to hit new stops without machining parts.
High-Speed Clamping
With 402.2 N of push force and variable air cushions, it clamps components swiftly while the needle valves eliminate end-of-stroke banging.
Trial Fit Rigs
Ideal for lab test fixtures where the exact 20-40 mm extend position and deceleration rate must be empirically tuned on-site.
Is the Airtac MFCJ Adjustable Mini Cylinder MFCJ32X40-20S the Right Cylinder?
When sizing this adjustable family, compare both bores: the MFCJ32 delivers 402.2 N push at 0.5 MPa, whereas the larger MFCJ40 hits 628.3 N. If your changeover demands lighter, faster motion, the 32 mm bore is ideal; step up to the 40 mm if moving heavier jigs. This unit shines in shock-sensitive trial fits where both the extend endpoint and deceleration need on-the-fly tuning.
Mount using LB foot, FA flange or TC trunnion brackets (there is no SDB or back-cover option). Remember that the air cushion only decelerates the piston near stroke end—it is not a lock. If gravity or air loss could cause drift, 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 MFCJ32X40-20S FAQ
This 32 mm bore cylinder uses a 1/4" port. At 0.5 MPa it provides 402.2 N push and 345.6 N pull force. At 0.7 MPa it yields 563 N push and 483.8 N pull. The theoretical maximum force is 82 kgf at 1.0 MPa.
The external adjuster shortens the extend stroke by up to 20 mm, giving a usable 20-40 mm window. The -S suffix adds a piston magnet for CMSG, DMSG or EMSG sensors. The needle air cushions only decelerate near the ends and do not lock the load.
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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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