The AirTAC Airtac MFC Cushioned Mini Cylinders MFC40X25CMT is a genuine double acting + cushion JIS-standard round-body mini air cylinder with a Ø40mm bore and 25mm 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.
With 1/4 in NPT tapered ports and a 40 mm bore, the MFC40X25CMT is the large-bore, short-stroke entry in AirTAC's MFC line: a double-acting, JIS-standard round-body mini cylinder with a variable air cushion at both ends. Turn the cushion needle at either head to soften the 25 mm stroke at speeds up to 800 mm/s, so a heavy fixture or ejector plate stops quietly instead of hammering the covers. NPT threads seal on the taper itself, which makes this version the natural pick for North-American manifolds and existing NPT plumbing without adapters. Construction matches the rest of the MFC family: a SUS304 stainless barrel with riveted aluminium covers, no tie rods to loosen. For the same bore and stroke the body is shorter than an ISO 6432 cylinder, useful where the 628.3 N push force (879.6 N at 0.7 MPa) must fit behind a tight tooling plate. The CM back cover variant is built for this class of work, and in practice this bore lifts about 32 kg vertically with a 2:1 margin or carries a safe side load near 377 N.
| Model | Airtac MFC Cushioned Mini Cylinders MFC40X25CMT |
|---|---|
| Series | MFC JIS mini cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Acting type | Double acting + cushion |
| Port size | 1/4" |
| Rod thread | M14×1.5 |
| 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | 739 N |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| MFC | JIS-standard round-body mini cylinder (double-acting, variable cushion). |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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.
A 25 mm stroke shoves finished cartons off a conveyor stop; the dual air cushions tame the impact of a 30 kg pack at full 800 mm/s travel so the station runs quiet across shifts.
Pushing 628.3 N at 0.5 MPa (879.6 N at 0.7 MPa) lets a small stake tool set light inserts, while the end cushion absorbs the snap-through instead of the cylinder head.
Sliding a loaded product gate between two chute positions with roughly 377 N safe working force, cushioned stops keeping the gate from slamming its frame at high cycling rates.
Size down before committing: the 32 mm MFC pushes 402.2 N at 0.5 MPa, so if your load and cycle speed allow roughly two-thirds of this cylinder's force you save bore width and air. Nothing larger exists in the MFC range, so 40 mm is the ceiling - step to a tie-rod series beyond it. Reserve this model for fast, shock-prone strokes; at low speed a bumper-style MF costs less. Remember the air cushion only decelerates near stroke end - it never holds the piston, so fit an external rod lock or pilot check valve wherever the 25 mm position must survive air loss. Mount with LB foot, FA flange, SDB pivot or TC trunnion, and order the -S suffix if CMSG, DMSG or EMSG switches are planned; this SKU without -S cannot carry a sensor.
Quick checklist
At 0.5 MPa the 40 mm bore delivers 628.3 N push and 527.8 N pull; at 0.7 MPa it reaches 879.6 N push and 738.9 N pull. Theoretical maximum force is about 128.1 kgf at 1.0 MPa. Ports are 1/4 in NPT tapered, the rod is 16 mm with an M14x1.5 male thread, speed range is 30-800 mm/s, and the operating pressure window is 0.15-1.0 MPa. The dual variable air cushions let you tune deceleration at both stroke ends.
The trailing T specifies 1/4 in NPT tapered ports, which seal on the thread itself and suit North-American pipe standards - pick it to match existing NPT fittings or manifolds instead of adapting from PT. For sensing, order the -S variant: only that version carries the piston magnet required by CMSG, DMSG or EMSG switches. Also note the SUS304 stainless barrel and riveted aluminium covers handle washdown splash, but the air cushion decelerates only - an external rod lock or pilot check valve is needed for any held load.
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