
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ32X50-40 is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø32mm bore and 50mm 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.
Tune both the extend end-point and the end-of-stroke deceleration on-site with this JIS-standard round-body mini cylinder. The external adjuster shortens the extend stroke by up to 40 mm (usable range 10-50 mm), while the needle variable air cushion at both ends soaks up high-speed shock. A 1/4" port feeds the 32 mm bore, yielding 402.2 N of push force at 0.5 MPa.
The SUS304 stainless barrel and riveted aluminium covers resist mild washdown corrosion, and the compact riveted body is shorter than a comparable ISO 6432 cylinder. This SKU omits the piston magnet, so it cannot accept CMSG, DMSG, or EMSG sensors. For sizing, a safe working load is roughly 241 N, lifting about 20.5 kg vertically with a 2:1 margin.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ32X50-40 |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 50 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.
| 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.
| MFCJ | JIS-standard round-body mini cylinder (adjustable-stroke, variable cushion). |
|---|---|
| 32 | Bore size in mm. |
| ×50 | 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.
Dial in the exact 10-50 mm extend reach and tune the needle cushion to absorb high-speed impact when stamping light sheet metal parts with 402.2 N of thrust.
Fine-tune the actuation length on the fly during product changeovers to deflect varying package sizes without relocating the entire cylinder assembly.
Lift roughly 20.5 kg of vertically moving pallets and rely on the adjustable air cushion to bring the load to a smooth, quiet halt at the top of the stroke.
Choose the 32 mm bore over the larger MFCJ40 (628.3 N push @0.5 MPa) when your fixture requires around 402.2 N of push force at 0.5 MPa, or step down from the MFCJ25 (245.3 N) if you need more thrust. The 40 mm adjustable window is ideal for trial fits and high-speed changeovers where the exact extend position and shock absorption must be dialed in together.
Mount using LB foot, FA flange, or TC trunnion brackets, as the adjustable-stroke build lacks a back cover and SDB option. Because this non-magnet SKU cannot take a sensor, order the -S variant if position feedback is required. Note that the air cushion only decelerates the piston near stroke end; it does not lock or hold the load on air loss, so add an external rod lock or pilot check valve for suspended loads.
Quick checklist
This 32 mm bore cylinder uses a 1/4" port. At 0.5 MPa it pushes 402.2 N and pulls 345.6 N. At 0.7 MPa it pushes 563 N and pulls 483.8 N. The theoretical maximum force is 82 kgf at 1.0 MPa.
No, this specific SKU lacks the internal piston magnet and cannot accept CMSG, DMSG, or EMSG switches. You must order the -S variant to enable magnetic sensing. The external adjuster shortens the extend stroke by up to 40 mm, and the variable air cushion decelerates the piston but does not function as a mid-stroke lock.
Genuine AirTAC parts produced by AirTAC factory.
Covers non-human-caused product damage.
Standard models are processed and dispatched in 3-5 business days.
Most inquiries answered within 7-8 hours.
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.