Airtac ACE Compact Cylinder ACE50X125S
The AirTAC Airtac ACE Compact Cylinder ACE50X125S is a genuine double acting ISO 21287 compact air cylinder with a Ø50mm bore and 125mm stroke, 1/8" 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.
- BoreØ50 mm
- Stroke125 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM10×1.5
- 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 ACE50X125S
This AirTAC ACE50X125S is a double acting ISO 21287 compact cylinder that delivers 981.7 N of push force at 0.5 MPa, making it a solid choice for medium-duty automation tasks. Its hard-anodized aluminium body is about 50% shorter than an ISO 15552 profile cylinder, so it fits into tight machine frames and guarding where a full-length unit will not.
With the -S magnet fitted, this model accepts CMSE or DMSE reed and solid-state switches for reliable position sensing. For a real-world load estimate, plan on a safe working load of about 60 kg at 0.5 MPa, which is roughly 0.6 times the theoretical push force and gives you a practical margin for dynamic loads and friction.
Airtac ACE Compact Cylinder ACE50X125S Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE50X125S |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø50 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M10×1.5 |
| 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 250 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 881 N |
| 0.7 MPa | 1374 N | 1234 N |
| Max (@1.0 MPa) | 200 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 ACE50X125S
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 50 | Bore size in mm. |
| ×125 | 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 ACE50X125S Is Used
Fixture Clamping
Use the 981.7 N push to clamp small parts in a CNC fixture, where the compact body fits between vise jaws and the 125 mm stroke provides enough travel to clear the workpiece.
Conveyor Stop Gate
Mount this cylinder to raise a stop gate on a packaging line; the 881.2 N pull retracts the gate quickly, and the fitted magnet lets a CMSE switch confirm the gate is down.
Carton Pusher
In a carton erecting machine, this cylinder pushes a folded carton into position with a 125 mm stroke, and the short body fits inside the machine frame without protruding.
Is the Airtac ACE Compact Cylinder ACE50X125S the Right Cylinder?
When sizing this 50 mm bore unit, compare it with the 40 mm bore ACE40 which pushes 628.3 N at 0.5 MPa, or step up to the 63 mm bore ACE63 for 1558.6 N of push force. The 125 mm stroke is well within the 250 mm maximum standard stroke for this bore, so you get a standard, readily available unit without long lead times. Since the magnet is fitted, you can directly mount CMSE or DMSE switches; if you need to hold a load when air pressure is lost, add a rod lock or pilot check valve because this cylinder does not lock by itself.
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 ACE50X125S FAQ
At 0.5 MPa, the push force is 981.7 N and the pull force is 881.2 N. At 0.7 MPa, push is 1374.4 N and pull is 1233.7 N. The theoretical maximum force at 1.0 MPa is 200.2 kgf. These figures are for the double-acting cylinder with a 16 mm rod.
The body is about 50% shorter than an ISO 15552 profile cylinder, saving valuable mounting space in tight jigs and guards. The fixed TPU bumper absorbs end-of-stroke impact, and the optional -S magnet (fitted here) allows CMSE or DMSE switches for position sensing. The port is 1/8 inch, and the rod has an M10x1.5 female thread.
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