Airtac ACE Compact Cylinder ACE25X20SB
The AirTAC Airtac ACE Compact Cylinder ACE25X20SB is a genuine double acting ISO 21287 compact air cylinder with a Ø25mm bore and 20mm 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
- Stroke20 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 ACE25X20SB
This AirTAC ACE25X20SB is a double acting ISO 21287 compact cylinder with a 25 mm bore and a 20 mm stroke. Its short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits into tight jigs and guards where a full-length unit will not. The hard-anodized aluminium body and S45C hard-chrome plated rod resist wear in continuous cycling.
At 0.5 MPa it pushes with 245.4 N and pulls with 206.2 N, rising to 343.6 N push at 0.7 MPa. For a real application, plan for about 15 kg of safe vertical lift at 0.5 MPa, keeping a 2:1 margin over the theoretical 25 kg. The fixed TPU bumper at both ends absorbs end-of-stroke energy, and the optional -S magnet is fitted here so CMSE or DMSE switches can be mounted for position sensing.
Airtac ACE Compact Cylinder ACE25X20SB Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE25X20SB |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø25 mm |
| Stroke | 20 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 ACE25X20SB
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×20 | 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 ACE25X20SB Is Used
Jig Clamping
Use in a small pneumatic jig to clamp a 2 kg workpiece during a drilling operation. The 245.4 N push at 0.5 MPa holds parts firmly, and the compact body fits under a machine guard.
Sorting Gate
Actuate a diverter gate on a light conveyor line to route packages. The 20 mm stroke moves a small flap quickly, and the M5x0.8 port connects easily to existing 6 mm tubing.
Pallet Stop
Deploy a retractable stop on a gravity roller conveyor to hold a lightweight tote. The 206.2 N pull at 0.5 MPa retracts the stop reliably, and the optional -S magnet lets a sensor confirm the position.
Is the Airtac ACE Compact Cylinder ACE25X20SB the Right Cylinder?
For a lighter force class, the ACE20X20SB pushes 157.1 N at 0.5 MPa, while moving up to the ACE32X20SB gives 402.1 N push. This 25 mm bore with a 20 mm stroke suits short, frequent moves in compact assemblies. The male rod thread (B code) simplifies direct coupling to a load, and the M5x0.8 port is standard for this bore size. Order with the -S magnet code to enable CMSE or DMSE reed or solid-state switches, as this model includes it. Remember, this cylinder does not hold position when air is lost; use a rod lock or pilot check valve for load holding.
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 ACE25X20SB FAQ
At 0.5 MPa, push is 245.4 N and pull 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. Operating pressure range is 0.15-1.0 MPa (22-145 psi), and speed is 30-500 mm/s.
The ACE25X20SB body is about 50% shorter than an ISO 15552 profile cylinder, so it fits into confined areas like machine guards or gantries. It has a fixed TPU bumper at both ends to absorb impact, and the optional -S magnet allows mounting CMSE or DMSE switches for position feedback.
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