Airtac ACE Compact Cylinder ACE25X70B
The AirTAC Airtac ACE Compact Cylinder ACE25X70B 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 ACE25X70B
This AirTAC ACE25X70B is a double acting compact cylinder that uses air to both extend and retract its 10 mm rod, with a fixed TPU bumper at each end to soften the stop. Its 25 mm bore delivers 245.4 N of push force at 0.5 MPa, so it suits light assembly and clamping tasks where space is tight.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which lets it fit into compact jigs and guarded zones. Since this version has no -S code, it has no magnet, so CMSE or DMSE sensors cannot be fitted unless you order the optional -S magnet. For a real workload, plan on about 147 N (roughly 15 kg of vertical lift with a 2:1 safety margin) rather than the full rating, and note that the male rod thread (B) simplifies direct coupling to fixtures.
Airtac ACE Compact Cylinder ACE25X70B Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE25X70B |
|---|---|
| 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 ACE25X70B
| 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 ACE25X70B Is Used
Compact Jig Clamping
Use the 245.4 N push to clamp small plastic or aluminum parts in a benchtop fixture, where the short body fits under a guard without protruding.
Label Applicator Press
Drive a light label applicator head with 70 mm of stroke to press labels onto boxes, relying on the fixed TPU bumper to prevent jarring at the end of each cycle.
Conveyor Stop Gate
Actuate a small stop gate on a parts conveyor, using the 206.2 N pull force to retract the rod and clear the path for lightweight components.
Is the Airtac ACE Compact Cylinder ACE25X70B the Right Cylinder?
For a lighter duty, the ACE20X70 offers 157.1 N push at 0.5 MPa, while stepping up to the ACE32X70 gives 402.1 N push, so you can match the force to your actual part weight. This 70 mm stroke is within the 150 mm maximum standard stroke for the 25 mm bore, so it ships as a standard item. The male rod thread (B) and PT port thread are fixed, and the M5x0.8 port suits small-bore air lines. Remember that a plain ACE does not hold its position if air pressure is lost, so add a rod lock or pilot check valve for any load that must stay put.
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 ACE25X70B FAQ
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 ISO 21287 design uses a short, hard-anodized aluminium body that is about 50% shorter than an ISO 15552 profile cylinder, so it fits in tight spaces. This model has no magnet because it lacks the -S code, so CMSE or DMSE switches cannot be mounted. To use sensors, you must order the version with the optional -S magnet, which adds a built-in magnet for switch detection.
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