Airtac ACE Compact Cylinder ACE25X70S
The AirTAC Airtac ACE Compact Cylinder ACE25X70S is a genuine double acting ISO 21287 compact air cylinder with a Ø25mm bore and 70mm 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.
- BoreØ25 mm
- Stroke70 mm
- Port sizeM5×0.8
- Acting typeDouble acting
- Rod threadM6×1.0
- CushionFixed TPU bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACE Compact Cylinder ACE25X70S
This AirTAC ACE25X70S is a double acting compact cylinder built to ISO 21287, with a hard-anodized aluminium body and a hard-chrome plated S45C steel rod. At 0.5 MPa it delivers 245.4 N push and 206.2 N pull, so it suits light assembly and clamping tasks. The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, letting it fit into tight machine guards and compact jigs where a longer cylinder will not go.
For real work, plan on about 147 N of usable force at 0.5 MPa, which lifts roughly 15 kg vertically with a 2:1 safety margin. The optional -S magnet is fitted here, so you can mount CMSE or DMSE reed or solid-state switches for position sensing. A fixed TPU bumper at each end absorbs impact, and the M5x0.8 port keeps plumbing simple for a 25 mm bore.
Airtac ACE Compact Cylinder ACE25X70S Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE25X70S |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø25 mm |
| Stroke | 70 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.
Theoretical Output Force (Ø25mm)
| 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.
Model Code: Airtac ACE Compact Cylinder ACE25X70S
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×70 | 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.
Where the Airtac ACE Compact Cylinder ACE25X70S Is Used
Fixture Clamping
Use the ACE25X70S to clamp small parts in a CNC fixture, where its 70 mm stroke and 245.4 N push at 0.5 MPa hold components firmly during drilling or milling.
Carton Tabbing
Mount this cylinder on a packaging line to push cardboard tabs into place. The compact body fits between guide rails, and the 206.2 N pull retracts the tab quickly.
Guard Interlock
In a machine safety guard, the ACE25X70S with the optional -S magnet can actuate a small latch and report its position via a CMSE switch, confirming the guard is closed.
Is the Airtac ACE Compact Cylinder ACE25X70S the Right Cylinder?
Choose the ACE25X70S when you need a compact, double acting cylinder with a 70 mm stroke and a 25 mm bore. It produces 245.4 N push at 0.5 MPa, which is a step up from the 157.1 N of the 20 mm bore and a step down from the 402.1 N of the 32 mm bore. Because the magnet is fitted, you can add CMSE or DMSE sensors for position feedback, but remember this cylinder does not hold its load if air pressure is lost - use a rod lock or pilot check valve for that.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Short stroke fits the compact body
- ✓ Port/thread type (PT / G)
- ✓ Add -S if you need the magnet for sensors
- ✓ Rod type (female / male B) & mount (FA/LB/CA)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Compact body: keep the stroke short and avoid side load on the rod.
- check Do not dismantle the threaded front/back covers.
- check Keep speed within the rated range; the TPU bumper absorbs stroke-end energy.
- check Installation by qualified personnel per AirTAC docs.
Airtac ACE Compact Cylinder ACE25X70S FAQ
At 0.5 MPa, push is 245.4 N and pull is 206.2 N. At 0.7 MPa, push rises to 343.6 N and pull to 288.6 N. The theoretical maximum force is 50.1 kgf at 1.0 MPa. Operating pressure range is 0.15-1.0 MPa (22-145 psi).
The ACE25X70S has a short body that saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits into tight spaces. It uses a fixed TPU bumper at both ends to absorb impact, and the optional -S magnet enables CMSE or DMSE sensors for position detection.
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