Airtac ACE Compact Cylinder ACE20X55S
The AirTAC Airtac ACE Compact Cylinder ACE20X55S is a genuine double acting ISO 21287 compact air cylinder with a Ø20mm bore and 55mm 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
- Stroke55 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 ACE20X55S
This AirTAC ACE20X55S is a double acting 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 is overkill.
Its ISO 21287 body is about 50% shorter than an ISO 15552 profile cylinder, letting it fit into tight machine guards and compact jigs. The optional -S magnet is fitted here, so CMSE or DMSE switches can track the piston position; without the -S code, no magnet is present. For a safe working load, plan for roughly 94 N of real work at 0.5 MPa, which lifts about 9.6 kg vertically with a 2:1 safety margin.
Airtac ACE Compact Cylinder ACE20X55S Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE20X55S |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 55 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 ACE20X55S
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×55 | 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 ACE20X55S Is Used
Compact Jig Clamping
Use the ACE20X55S to clamp small parts in a CNC fixture where the short ISO 21287 body fits under the workholding plate, applying 157.1 N to hold components during drilling.
Label Applicator Press
Drive a label applicator head on a packaging line with this 55 mm stroke cylinder, using its 117.8 N pull force to retract the head after each label is pressed onto a carton.
Part Presence Detection
Mount the ACE20X55S with its fitted magnet and a CMSE switch to push a small sensor flag against passing parts on a conveyor, confirming each item is present before the next station.
Is the Airtac ACE Compact Cylinder ACE20X55S the Right Cylinder?
For a 20 mm bore, the ACE20X55S offers a middle ground between the ACE16X55S (100.5 N push) and the ACE25X55S (245.4 N push) at 0.5 MPa. Choose this model when your application needs around 157 N of force but space is limited. The M5x0.8 port is standard for this bore size, and the female M6x1.0 rod thread accepts common attachments. Since the magnet is fitted, you can add CMSE or DMSE sensors for position feedback, but remember this cylinder does not hold its load if air pressure is lost - use a rod lock or pilot check valve for that.
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 ACE20X55S 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. These figures are for a 20 mm bore with a 10 mm rod.
The ACE20X55S has a hard-anodized aluminium body that is about 50% shorter than an ISO 15552 profile cylinder, so it fits in tight spaces like machine guards and small jigs. It has a fixed TPU bumper at both ends to absorb impact, and the optional -S magnet allows CMSE or DMSE sensors to detect piston position.
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