Airtac ACE Compact Cylinder ACE20X55B
The AirTAC Airtac ACE Compact Cylinder ACE20X55B 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 ACE20X55B
This AirTAC ACE20X55B is a double acting ISO 21287 compact cylinder with a 20 mm bore and a 55 mm stroke, delivering 157.1 N of push force at 0.5 MPa. Its short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, making it ideal for tight automation frames and guarding where space is at a premium.
With a male rod thread (B code), this unit connects directly to tooling without adapters. Since it lacks the optional -S magnet, no CMSE or DMSE sensors can be fitted; order the -S version for switch capability. For a 2:1 safety margin, plan to lift about 8 kg vertically at 0.5 MPa, based on the 157.1 N push force, ensuring reliable operation under real loads.
Airtac ACE Compact Cylinder ACE20X55B Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE20X55B |
|---|---|
| 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 ACE20X55B
| 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 ACE20X55B Is Used
Fixture Clamping
Use in a CNC fixture to clamp small aluminum parts with 157.1 N force, fitting between guide rails where a full-length cylinder would not fit.
Label Applicator
Drive a label tamp head on a carton sealing line, with the 55 mm stroke matching the product height and the compact body saving space on the conveyor frame.
Test Probe Actuator
Actuate a spring-loaded test probe in an electronics bench fixture, using the 117.8 N retract force to clear the part quickly at speeds up to 500 mm/s.
Is the Airtac ACE Compact Cylinder ACE20X55B the Right Cylinder?
Size this ACE20X55B against a smaller 16 mm bore (100.5 N push at 0.5 MPa) when space is tighter, or step up to a 25 mm bore (245.4 N push) for heavier tooling. The fixed TPU bumper absorbs end-of-stroke energy but does not hold a load if air pressure drops; use a rod lock or pilot check valve for position holding. Mounting options include FA/FB flange, LB foot, CA/CB clevis, CR, SDB pivot, and FTC brackets, all compatible with the ISO 21287 face.
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 ACE20X55B FAQ
At 0.5 MPa, push is 157.1 N and pull is 117.8 N. At 0.7 MPa, push rises to 219.9 N and pull to 164.9 N. The theoretical maximum force is 32 kgf at 1.0 MPa. These figures assume clean, dry air filtered to 40 um and a supply within the 0.15-1.0 MPa (22-145 psi) operating range.
No, this ACE20X55B does not include the optional -S magnet, so CMSE or DMSE switches cannot be mounted. If you need position sensing, order the -S variant, which has the built-in magnet for those switches. The cylinder itself is a compact ISO 21287 design with a hard-anodized aluminum body and a fixed TPU bumper at both ends.
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