Airtac ACED Double-acting Compact Cylinder ACED25X55SB
The AirTAC Airtac ACED Double-acting Compact Cylinder ACED25X55SB is a genuine double acting, double rod 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, double rod
- 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 ACED Double-acting Compact Cylinder ACED25X55SB
A double acting compact cylinder built to ISO 21287, the ACED25X55SB carries a 25 mm bore and a 55 mm stroke with a piston rod leaving BOTH covers. Because each side of the piston sees the rod-side area, output force is identical in either direction: 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa. The through-rod resists rotation and modest side load, and the rear rod end is free for a sensor flag or a second tool plate. The B code gives a male rod thread on both ends.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body cannot. A hard-anodized aluminium body with a burnished bore runs against an S45C hard-chrome-plated rod, with a fixed TPU bumper at each end absorbing end-of-stroke shock. As an S-coded model the magnet is fitted, so CMSE or DMSE switches can be clamped anywhere along the body slots. At 0.5 MPa the 206.2 N rating translates to roughly 21 kg of vertical lift, or about 12 kg with a 2:1 margin for a real part weight.
Airtac ACED Double-acting Compact Cylinder ACED25X55SB Technical Specifications
| Model | Airtac ACED Double-acting Compact Cylinder ACED25X55SB |
|---|---|
| Series | ACED compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø25 mm |
| Stroke | 55 mm |
| Acting type | Double acting, double rod |
| 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 | Force (both ways) |
|---|---|
| 0.5 MPa | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 kgf |
Double-rod: a rod exits both covers, so output force is equal in both directions (rod-side area used).
Model Code: Airtac ACED Double-acting Compact Cylinder ACED25X55SB
| ACED | ISO 21287 compact cylinder (double-rod). |
|---|---|
| 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 ACED Double-acting Compact Cylinder ACED25X55SB Is Used
Fixture clamping on CNC pallets
The 206.2 N clamping force at 0.5 MPa holds small aluminium or plastic workpieces in a 5-axis pallet jig, and the compact body fits between fixture walls where a profile cylinder is too long.
Position feedback on assembly stations
With the fitted magnet, CMSE or DMSE switches confirm the 55 mm press or eject stroke on an electronics assembly line, cutting scrap from missed placements.
Symmetric push-pull transfer
Equal force in both directions makes the double rod ideal for a reciprocating gate or shuttle on a packaging machine, with the rear rod carrying a tool plate or flag.
Is the Airtac ACED Double-acting Compact Cylinder ACED25X55SB the Right Cylinder?
At 206.2 N per direction at 0.5 MPa, this 25 mm bore suits clamping, indexing and small lift tasks in the 10-15 kg range once a margin is applied. If your load sits under 120 N, drop to the 16 mm bore (75.4 N at 0.5 MPa); if you need over 300 N, step up to the 32 mm bore (345.6 N at 0.5 MPa). The 55 mm stroke sits well inside the 150 mm maximum standard stroke for this bore, so it ships as a catalogue item.
Remember that a plain double-rod cylinder drifts when air is lost - add a rod lock or pilot check valve if the load must stay put. FA/FB flanges, LB feet and CA clevis brackets bolt to the ISO 21287 face, and I/Y rod knuckles suit the male threaded rod ends. The fitted -S magnet accepts CMSE / DMSE switches for end-of-stroke or mid-stroke signalling.
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 ACED Double-acting Compact Cylinder ACED25X55SB FAQ
Output is equal in both directions because a rod exits each cover and both strokes use the rod-side area: 206.2 N at 0.5 MPa, 288.6 N at 0.7 MPa, and a maximum of 42.0 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi) with a 1.5 MPa (215 psi) proof pressure, speed range 30-500 mm/s, and the 55 mm stroke is within the 150 mm standard maximum for a 25 mm bore.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, freeing space in tight guards and gantries. A fixed TPU bumper at each end absorbs end-of-stroke impact without adjustment. This S-coded model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches mount in the body slots for stroke signalling; models without the S code have no magnet.
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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.
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Most inquiries answered within 7-8 hours.
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