Airtac ACE Compact Cylinder ACE50X20S
The AirTAC Airtac ACE Compact Cylinder ACE50X20S is a genuine double acting ISO 21287 compact air cylinder with a Ø50mm bore and 20mm 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
- Stroke20 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 ACE50X20S
This AirTAC ACE50X20S is a double acting ISO 21287 compact cylinder delivering 981.7 N of push force at 0.5 MPa, with a 20 mm stroke in a body about 50% shorter than an ISO 15552 profile cylinder. The hard-anodized aluminium body and S45C hard-chrome plated rod are built for repetitive cycles in tight automation cells.
The optional -S magnet is already fitted on this model, so CMSE or DMSE reed and solid-state switches can be mounted directly to sense rod position. For real work, plan on about 60 kg of usable load at 0.5 MPa (0.6 times the push force), which gives a safe margin for vertical lifting or pressing tasks without overloading the cylinder.
Airtac ACE Compact Cylinder ACE50X20S Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE50X20S |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø50 mm |
| Stroke | 20 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 ACE50X20S
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 50 | 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 ACE50X20S Is Used
Jig Clamping on CNC Fixtures
Use the 981.7 N push at 0.5 MPa to clamp small aluminium parts in a CNC milling fixture, where the short body fits under the spindle guard and the 20 mm stroke is enough to secure the workpiece.
Carton Ejection in Packaging Lines
In a carton erecting machine, this cylinder can push finished boxes off a conveyor onto a takeaway belt. The 881.2 N pull force at 0.5 MPa retracts the rod quickly to clear the next box.
Sorting Gate in Conveyor Systems
Mount this cylinder with an LB foot bracket to operate a diverter gate on a parcel sorting conveyor. The 20 mm stroke moves the gate just enough to redirect packages, and the fitted magnet lets a CMSE switch confirm the gate position.
Is the Airtac ACE Compact Cylinder ACE50X20S the Right Cylinder?
For a lighter duty application, the ACE40X20 offers 628.3 N push at 0.5 MPa, while stepping up to the ACE63X20 gives 1558.6 N push for heavier fixtures. This 50 mm bore with a 20 mm stroke suits short-travel clamping, indexing, or ejection tasks where space is limited and force is moderate.
Since the magnet is fitted, you can add CMSE or DMSE switches for position sensing. Mounting options like FA/FB flanges, LB foot brackets, or CA/CB clevises bolt directly to the ISO 21287 face. Remember, this cylinder does not hold its position when air pressure is lost; use a pilot check valve or rod lock if the load must stay put.
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 ACE50X20S 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 is 200.2 kgf at 1.0 MPa. The port size is 1/8 inch, and the rod thread is M10x1.5 female.
The ACE50X20S has a body about 50% shorter than an ISO 15552 profile cylinder, so it fits into tight spaces like under machine guards or inside gantries. It uses a fixed TPU bumper at both ends to absorb end-of-stroke impact, and the optional -S magnet is already fitted for CMSE or DMSE sensors.
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