Airtac ACE Compact Cylinder ACE125X25B
The AirTAC Airtac ACE Compact Cylinder ACE125X25B is a genuine double acting ISO 21287 compact air cylinder with a Ø125mm bore and 25mm stroke, 1/4" 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.
- BoreØ125 mm
- Stroke25 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM16×2.0
- 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 ACE125X25B
This AirTAC ACE125X25B is a double acting ISO 21287 compact cylinder with a 125 mm bore and 25 mm stroke, delivering 6135.9 N of push force at 0.5 MPa. Its hard-anodized aluminium body is about 50% shorter than an ISO 15552 profile cylinder, saving valuable mounting length in tight machine frames and gantries.
The male rod thread (B code) simplifies attachment of custom tooling, and the fixed TPU bumper absorbs end-of-stroke impact. For real work, plan on roughly 3682 N (about 375 kg) of safe vertical lift at 0.5 MPa, not the full rating. This model has no magnet, so CMSE or DMSE sensors cannot be fitted unless you order the optional -S code.
Airtac ACE Compact Cylinder ACE125X25B Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE125X25B |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø125 mm |
| Stroke | 25 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M16×2.0 |
| 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 300 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5890 N |
| 0.7 MPa | 8590 N | 8247 N |
| Max (@1.0 MPa) | 1251 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 ACE125X25B
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 125 | Bore size in mm. |
| ×25 | 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 ACE125X25B Is Used
Heavy-Duty Clamping
Use this cylinder to clamp large metal blanks on a CNC fixture, applying over 6 kN of force to hold parts rigidly during milling.
Press Operation
Ideal for a small shop press that compresses bushings or bearings into housings, with the short stroke providing quick, powerful cycles.
Die Cutting
Mount it in a die-cutting machine to punch through thick cardboard or leather, leveraging the high force to cut cleanly with each stroke.
Is the Airtac ACE Compact Cylinder ACE125X25B the Right Cylinder?
Choose this ACE125X25B for high-force clamping or pressing in a compact envelope. If you need less force, the ACE100X25 delivers 3927.0 N push at 0.5 MPa, while the ACE125X50 offers a longer stroke for larger parts. Remember, a plain ACE does not hold its position when air pressure is lost - use a rod lock or pilot check valve for load holding. The 1/4" port suits standard shop air lines, and the male rod thread accepts a variety of couplings.
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 ACE125X25B FAQ
At 0.5 MPa, push is 6135.9 N and pull is 5890.5 N. At 0.7 MPa, push is 8590.3 N and pull is 8246.7 N. The theoretical maximum force is 1251.4 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), and proof pressure is 1.5 MPa (215 psi).
Yes, it is an ISO 21287 compact cylinder with a body about 50% shorter than an ISO 15552 profile cylinder, saving space. However, this version has no magnet, so you cannot mount CMSE or DMSE sensors. To use sensors, you must order the ACE125X25SB variant with the optional -S magnet.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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