The Airtac ACQ40X25S is a double-acting compact cylinder from the AirTAC ACQ series, built to JIS, with a 40 mm bore, 25 mm stroke, female (internal) thread on the piston rod and with magnet (S). The short body is held together by C-clips, the bore is roller-burnished and hard-anodised, and switch slots run around the barrel.
Reading the code: ACQ = compact cylinder (double acting), 40×25 = bore x stroke in mm, S = with magnet; no B means female rod thread; no further suffix means no mounting accessory and the standard PT port thread.
Technical data
| Airtac model | ACQ40X25S |
|---|---|
| Series | ACQ compact cylinder (JIS) |
| Bore | 40 mm |
| Piston rod diameter | 16 mm |
| Stroke | 25 mm (max. standard stroke for this bore: 100 mm) |
| Rod end | Female thread |
| Magnet | Yes (S) |
| Acting type | Double acting |
| ضغط التشغيل | 0.15-1.0 MPa (22-145 psi) |
| Proof pressure | 1.5 MPa (215 psi) |
| Fluid | Air, filtered by a 40 µm filter element |
| Temperature | -20 to 70 °C |
| Speed range | 30-500 mm/s |
| Cushion | Bumper |
| Stroke tolerance | +1.0/0 mm up to 100 mm stroke, +1.5/0 mm above 100 mm |
| Port size | 1/8″ (PT standard; G and NPT on request) |
| Mounting | Body through-holes; FA, FB, LB and CB accessories available |
| Theoretical force at 0.5 MPa | push 628.3 N / pull 527.8 N (calculated, matches AirTAC thrust table) |
| Condition | New original, factory packaged |
| Origin | Made in China (Airtac International Group) |
Typical applications
- Mould and tooling clamps
- Lifting and indexing units on assembly lines
- Punching, marking and pressing stations
- Clamping and locating on jigs and fixtures
- Like-for-like replacement of an Airtac ACQ40X25S
Compatibility and replacement
ACQ cylinders follow the JIS compact-cylinder standard, so the 40 mm bore shares its basic envelope with JIS compact cylinders of other brands; still compare overall length, rod thread and mounting holes before swapping makes. If you need a male rod thread instead, the same size is ordered as ACQ40X25SB (magnet and male thread) or ACQ40X25B (male thread, no magnet).
Frequently asked questions
What is the difference between ACQ40X25S and ACQ40X25B?
S means the piston carries a magnet for cylinder switches; B means the piston rod has a male thread instead of a female one. This ACQ40X25S has a magnet and a female thread.
How much force does it give?
At 0.5 MPa the 40 mm bore gives about 628.3 N pushing and 527.8 N pulling (16 mm rod), per AirTAC data. Size with spare capacity if the load varies.
Can it take side load?
It should not. AirTAC advises keeping side load off the cylinder in operation and notes that the short front cover and piston limit the usable stroke; use a guided cylinder (such as the TCL/TCM series) or an external guide for offset loads.
Related parts
- Airtac ACQ40X25B ACQ Compact Cylinder
- Airtac ACQ40X30S ACQ Compact Cylinder
- Airtac ACQ40X20S ACQ Compact Cylinder
- All ACQ Compact Cylinders
Common spare part for machines already running Airtac pneumatic components. Tell us the quantity and destination country and we will confirm stock and lead time.
Every part RendatSP supplies is new and original, carries a 1-year warranty and ships worldwide by air in 5 to 7 days once ready (shipping, payment and warranty). Send us the part number and quantity on WhatsApp or through the inquiry form and we will quote the same working day. Agents in Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.
