Airtac ACE Compact Cylinder ACE25X55SB
The AirTAC Airtac ACE Compact Cylinder ACE25X55SB is a genuine double acting ISO 21287 compact air cylinder with a Ø25mm bore and 55mm 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
- Stroke55 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 ACE25X55SB
The ACE25X55SB is a double acting ISO 21287 compact cylinder, its short body cutting about 50% of the mounting length of an ISO 15552 profile cylinder. At 0.5 MPa it delivers 245.4 N of push force, and the optional -S magnet is fitted here for CMSE or DMSE switches, so position sensing is ready without extra machining.
With a 25 mm bore and 55 mm stroke, this unit suits tight automation cells where full-length cylinders will not fit. The hard-anodized aluminium body and S45C hard-chrome rod resist wear, and the fixed TPU bumper absorbs end-of-stroke energy. As a practical rule, plan for about 147 N of real work at 0.5 MPa, which lifts roughly 15 kg vertically with a 2:1 safety margin.
Airtac ACE Compact Cylinder ACE25X55SB Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE25X55SB |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø25 mm |
| Stroke | 55 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 ACE25X55SB
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×55 | 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 ACE25X55SB Is Used
Fixture Clamping
Use in a CNC fixture to clamp small aluminium parts with 245.4 N push force, fitting into a compact guard where a longer cylinder would interfere.
Label Applicator
Drive a label tamp head on a packaging line; the 55 mm stroke matches typical product heights, and the magnet enables precise cycle counting.
Stop Gate
Act as a stop gate on a light conveyor, retracting with 206.2 N pull to release parts, while the TPU bumper prevents shock at high cycle rates.
Is the Airtac ACE Compact Cylinder ACE25X55SB the Right Cylinder?
For lighter duty, the ACE20X55 offers 157.1 N push at 0.5 MPa, while stepping up to the ACE32X55 gives 402.1 N push. Since this model has the -S magnet, order CMSE or DMSE switches for position feedback; without -S, no magnet is present. The male rod thread (B) simplifies mounting to clevis or knuckle fittings, and the M5x0.8 port suits small-bore air lines.
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 ACE25X55SB 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 is 0.15-1.0 MPa (22-145 psi), with speed range 30-500 mm/s.
The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, letting you fit it into tight jigs and guards. The fixed TPU bumper absorbs end-of-stroke energy, but it does not lock or hold a load; for position holding, use a rod lock or pilot check valve.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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