Airtac ACE Compact Cylinder ACE20X40S
The AirTAC Airtac ACE Compact Cylinder ACE20X40S is a genuine double acting ISO 21287 compact air cylinder with a Ø20mm bore and 40mm 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.
- BoreØ20 mm
- Stroke40 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 ACE20X40S
This AirTAC ACE20X40S is a double acting ISO 21287 compact cylinder that uses air to both extend and retract its 10 mm rod. With a 20 mm bore it delivers 157.1 N of push force at 0.5 MPa, so it suits light automation tasks where a full-size cylinder would waste space.
The hard-anodized aluminium body is about 50% shorter than an ISO 15552 profile cylinder, letting it fit into tight jigs and guards. The optional -S magnet is fitted on this unit, so CMSE or DMSE switches can track the piston position. For a real-world load, plan on roughly 0.6 times the rated push, which gives about 9.6 kg of usable force at 0.5 MPa.
Airtac ACE Compact Cylinder ACE20X40S Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE20X40S |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 40 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 100 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 (Ø20mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 157 N | 118 N |
| 0.7 MPa | 220 N | 165 N |
| Max (@1.0 MPa) | 32 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 ACE20X40S
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×40 | 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 ACE20X40S Is Used
Small Assembly Jig
Use the ACE20X40S to actuate a locating pin or clamp in a benchtop assembly fixture for electronics, where its short body fits under a guard and the 40 mm stroke moves parts into place.
Light Packaging Pusher
In a carton sealing line, this cylinder can push small boxes or labels onto a conveyor. The 157.1 N push at 0.5 MPa is enough for lightweight items, and the compact size fits between rollers.
Lab Test Actuator
For a test rig that cycles a small valve or switch, the ACE20X40S provides repeatable motion at speeds from 30 to 500 mm/s. The optional magnet lets a CMSE sensor confirm each cycle for data logging.
Is the Airtac ACE Compact Cylinder ACE20X40S the Right Cylinder?
For a lighter duty, the ACE16X40S with 100.5 N push at 0.5 MPa is a compact option, while the ACE25X40S offers 245.4 N push for more demanding applications. This 20 mm bore model with a 40 mm stroke fits between them for small assembly fixtures or light clamping tasks.
The M5x0.8 port and PT thread are standard for this bore size. Since the magnet is already fitted, you can add CMSE or DMSE sensors for position feedback. The fixed TPU bumper handles end-of-stroke impact, but it does not hold a load if air pressure is lost, so use a rod lock or pilot check valve for safety.
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 ACE20X40S FAQ
At 0.5 MPa, the push force is 157.1 N and the pull force is 117.8 N. At 0.7 MPa, push is 219.9 N and pull is 164.9 N. The theoretical maximum force is 32 kgf at 1.0 MPa. The operating pressure range is 0.15-1.0 MPa (22-145 psi).
The ACE20X40S has a short body that saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits into tight spaces. It uses a fixed TPU bumper at both ends to absorb impact, not an adjustable cushion. The optional -S magnet is fitted here, enabling CMSE or DMSE switches for position sensing.
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