Airtac ACE Compact Cylinder ACE25X50SB
The AirTAC Airtac ACE Compact Cylinder ACE25X50SB is a genuine double acting ISO 21287 compact air cylinder with a Ø25mm bore and 50mm 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
- Stroke50 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 ACE25X50SB
This AirTAC ACE25X50SB is a double acting ISO 21287 compact cylinder with a 25 mm bore and 50 mm stroke. It delivers a 245.4 N push force at 0.5 MPa, which translates to a practical vertical lift of about 15 kg when you apply a 2:1 safety margin. The hard-anodized aluminium body is about 50% shorter than an ISO 15552 profile cylinder, so it fits into tight machine guarding and compact jigs where a full-length cylinder would not. The S45C piston rod is hard-chrome plated for wear resistance, and the fixed TPU bumper at each end absorbs end-of-stroke impact.
Because this model carries the optional -S magnet, you can mount CMSE or DMSE reed or solid-state switches directly on the body to sense piston position. The body has magnet slots around its circumference, making switch positioning flexible. With a port size of M5x0.8, this cylinder is ready for small-bore pneumatic circuits. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed ranges from 30 to 500 mm/s, so it suits moderate-cycle automation tasks.
Airtac ACE Compact Cylinder ACE25X50SB Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE25X50SB |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø25 mm |
| Stroke | 50 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 ACE25X50SB
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 25 | Bore size in mm. |
| ×50 | 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 ACE25X50SB Is Used
Compact Jig Clamping
Use in a small drilling fixture to clamp a 2 kg workpiece with a 50 mm stroke, leveraging the 245.4 N push force and short body to fit under a drill head.
Label Applicator Press
In a labeling machine, this cylinder can press a label applicator onto boxes with a 50 mm stroke, using the M5x0.8 port for quick connection to a control valve.
Guard Door Actuator
Mount on a machine guard to slide a small access door open and closed; the compact body saves space and the -S magnet lets a CMSE switch confirm the door is fully closed.
Is the Airtac ACE Compact Cylinder ACE25X50SB the Right Cylinder?
For a lighter duty application, the ACE20X50 offers a 157.1 N push at 0.5 MPa, while the ACE32X50 provides 402.1 N push at the same pressure, giving you a clear sizing ladder. This 25 mm bore unit is a middle-ground choice for compact fixtures needing moderate force. Since the magnet is fitted, you can use CMSE switches for position sensing, but remember that a plain ACE does not hold its load if air pressure is lost; for vertical applications, add a rod lock or pilot check valve. The male rod thread (B) simplifies mounting of custom tooling, and the ISO 21287 face accepts FA/FB flange, LB foot, CA/CB clevis, CR, SDB pivot, and FTC brackets.
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 ACE25X50SB 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 at 1.0 MPa is 50.1 kgf. These figures are based on the official AirTAC datasheet for the 25 mm bore.
The ACE25X50SB has a body about 50% shorter than an ISO 15552 profile cylinder, so it fits into tight spaces like inside machine guards or between guide rails. It uses a fixed TPU bumper at both ends to absorb impact, not an adjustable cushion. The optional -S magnet enables CMSE or DMSE switch mounting for position sensing.
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