
The AirTAC Airtac MFCJ Adjustable Mini Cylinder MFCJ32X90-30S is a genuine double acting, adjustable stroke + cushion JIS-standard round-body mini air cylinder with a Ø32mm bore and 90mm 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.
Dial in exact extend lengths and tame high-speed shocks with the AirTAC MFCJ32X90-30S. This double-acting JIS-standard round-body mini cylinder features a 30mm adjustable stroke window, allowing you to shorten the extend end from 90mm down to 60mm directly on the floor. A needle-variable air cushion at both ends soaks up end-of-stroke impact, ensuring smooth deceleration across its 30-800mm/s speed range.
Built with a SUS304 stainless steel barrel and riveted aluminium covers, it resists mild corrosion and washdowns while maintaining a shorter mounting length than an ISO 6432 unit. The 32mm bore delivers 402.2N push force at 0.5MPa, translating to a safe working load of roughly 241N or a 20.5kg vertical lift with a 2:1 margin. This -S variant includes a piston magnet for CMSG, DMSG, or EMSG sensors, and uses a 1/4" port with an M10x1.25 male rod thread.
| Model | Airtac MFCJ Adjustable Mini Cylinder MFCJ32X90-30S |
|---|---|
| Series | MFCJ JIS mini cylinder |
| Bore size | Ø32 mm |
| Stroke | 90 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. |
| ×90 | 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.
Fine-tune the 60-90mm extend position on packaging lines without machining new spacers, using the 30mm adjuster to hit exact push points for 402.2N loads.
Dial in the needle air cushion to softly decelerate delicate test fixtures at high speeds, preventing end-cap impact while validating a new assembly process.
Set the precise ejection distance for light parts on a conveyor, shortening the stroke from 90mm to exactly 60mm to save cycle time without replacing the cylinder.
When sizing this series, compare both bores: the MFCJ32 provides 402.2N push at 0.5MPa, while stepping up to the MFCJ40 yields 628.3N for heavier fixtures. Choose the 32mm bore with a 30mm adjuster when you need precise positioning of lighter payloads during high-speed changeovers. The variable air cushion is invaluable for shock-sensitive trial fits, letting you tune deceleration independently of the stroke length.
Mounting options include LB foot, FA flange, and TC trunnion (no SDB or back-cover). Remember that the adjuster and cushion only decelerate the piston; they do not hold position. If air pressure drops, the piston will drift, so add an external rod lock or pilot check valve for suspended loads. The integrated -S magnet supports CMSG, DMSG, and EMSG switches for position confirmation.
Quick checklist
The 32mm bore delivers 402.2N push and 345.6N pull at 0.5MPa, or 563N push and 483.8N pull at 0.7MPa. The theoretical maximum force is 82kgf at 1.0MPa. It uses a 1/4" air port and a 12mm rod with an M10x1.25 male thread.
The external adjuster shortens the extend stroke by up to 30mm on-site, giving a usable range of 60-90mm, while the retract stroke remains full. The -S suffix means it has a built-in piston magnet for CMSG, DMSG, or EMSG sensors. The variable air cushion at both ends only decelerates the piston near the end of travel; it does not lock or hold the load.
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