
The AirTAC Airtac ACE Compact Cylinder ACE25X5 is a genuine double acting ISO 21287 compact air cylinder with a Ø25mm bore and 5mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. Its short compact envelope saves about 50% of the mounting length of an ISO 15552 profile cylinder.
This AirTAC ACE25X5 is a double acting compact cylinder with a 25 mm bore and a 5 mm stroke, delivering 245.4 N of push force at 0.5 MPa. Its short ISO 21287 body takes up about half the mounting length of an ISO 15552 profile cylinder, making it a fit for tight spaces. The hard-anodized aluminium body and S45C hard-chrome rod resist wear in continuous cycling.
For a 2:1 safety margin, plan to lift about 12.5 kg vertically with this unit at 0.5 MPa, based on its 245.4 N push. The fixed TPU bumper at both ends absorbs end-of-stroke impact, but it does not hold a load if air pressure is lost. This model has no magnet, so CMSE or DMSE sensors cannot be used unless you order the optional -S version.
| Model | Airtac ACE Compact Cylinder ACE25X5 |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø25 mm |
| Stroke | 5 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 – 500 mm/s |
| Cushion | Fixed TPU bumper (both ends) |
| Max standard stroke | Up to 150 mm |
Specifications follow the official AirTAC ACE-series (ISO 21287) datasheet. Body: hard-anodized aluminium alloy; piston rod: S45C carbon steel with hard-chrome plating. Rod type: female thread (blank) or male thread (B). Thread options: PT (blank) / G. A built-in magnet is OPTIONAL — add the -S code to fit CMSE / DMSE position sensors.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 245 N | 206 N |
| 0.7 MPa | 344 N | 289 N |
| Max (@1.0 MPa) | 50 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×5 | Stroke length in mm. |
| S | Optional built-in magnet for CMSE / DMSE sensors (omit for no magnet). |
| B | Rod type: B = male thread; blank = female thread. |
ACE-family variants: ACE (double acting), ASE / ATE (single acting push / pull), ACED (double rod), ACEJ (adjustable stroke), TACE / TACED (non-rotating twin-guide yoke). Mounting accessories: FA / FB flange, LB foot, CA / CB clevis, CR, SDB pivot, FTC; plus I and Y knuckles. Thread PT (blank) / G.
Use the ACE25X5 to clamp small workpieces in a CNC fixture where the short body fits under a guard, applying 245.4 N to hold parts during drilling.
Drive a label applicator head in a packaging line with a 5 mm stroke to press labels onto cartons, cycling at up to 500 mm/s for quick production.
Actuate a small pneumatic valve or limit switch in an automated assembly cell, using the compact size to fit within a control cabinet.
For a lighter load, consider the ACE20X5 with 157.1 N push at 0.5 MPa, or step up to the ACE32X5 for 402.1 N push. The 5 mm stroke suits short indexing or clamping tasks where space is minimal. This unit has a female M6x1.0 rod thread and an M5x0.8 port, and it operates on filtered air from 0.15-1.0 MPa (22-145 psi). If you need position sensing, order the ACE25X5S to get the optional magnet for CMSE or DMSE switches.
Quick checklist
At 0.5 MPa, the push force is 245.4 N and the pull force is 206.2 N. At 0.7 MPa, push is 343.6 N and pull is 288.6 N. The theoretical maximum force is 50.1 kgf at 1.0 MPa. The operating pressure range is 0.15-1.0 MPa (22-145 psi), with a proof pressure of 1.5 MPa (215 psi).
The ACE25X5 has a short body that saves about 50% of the mounting length compared to an ISO 15552 profile cylinder, so it fits in tight jigs and guards. It has a fixed TPU bumper at both ends to absorb impact, but it does not provide adjustable cushioning or load holding. The body is hard-anodized aluminium with an S45C hard-chrome rod for durability.
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