Airtac ACE Compact Cylinder ACE20X55SB
The AirTAC Airtac ACE Compact Cylinder ACE20X55SB 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 ACE20X55SB
This AirTAC ACE20X55SB is a double acting ISO 21287 compact cylinder with a 20 mm bore and 55 mm stroke, delivering 157.1 N push and 117.8 N pull at 0.5 MPa. 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.
The optional -S magnet is fitted on this model, allowing CMSE or DMSE reed and solid-state switches to sense the piston position. With a 10 mm hard-chrome plated rod and M5x0.8 port, this unit suits light automation; for a safe working load, plan on about 94 N (0.6 x 157.1 N) to keep a 2:1 margin, which lifts roughly 9.6 kg vertically.
Airtac ACE Compact Cylinder ACE20X55SB Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE20X55SB |
|---|---|
| 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 ACE20X55SB
| 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 ACE20X55SB Is Used
Small Parts Clamping
Use this 55 mm stroke cylinder to clamp small plastic or aluminium parts on a CNC fixture, where the 157.1 N push at 0.5 MPa provides firm holding without marring surfaces.
Conveyor Stop Gate
Mount this compact cylinder on a packaging conveyor to raise a stop gate, diverting lightweight boxes or cartons. The short body fits under the conveyor frame, and the 55 mm stroke clears the product path.
Lab Test Rig Actuator
In a quality lab, use this cylinder to push a test probe against a sample with a controlled 157.1 N force at 0.5 MPa, cycling at speeds up to 500 mm/s for repeated durability checks.
Is the Airtac ACE Compact Cylinder ACE20X55SB the Right Cylinder?
For a 20 mm bore, the 157.1 N push at 0.5 MPa handles small parts and light clamping. If you need more force, step up to a 25 mm bore which gives 245.4 N push, or drop to a 16 mm bore at 100.5 N for lighter duty. This ACE20X55SB has a male rod thread (B code) and PT port thread, so verify your rod coupling and fitting compatibility before ordering.
With the magnet fitted, you can mount CMSE or DMSE switches for position sensing. The fixed TPU bumper at both ends absorbs end-of-stroke impact, but it does not hold a load; if the air supply fails, the rod will drift, so add a rod lock or pilot check valve for any vertical or holding application.
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 ACE20X55SB 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 ACE20X55SB follows ISO 21287, so its body is about 50% shorter than an ISO 15552 profile cylinder, saving space in tight fixtures. It has a fixed TPU bumper at both ends that absorbs end-of-stroke energy, but it is not adjustable and does not lock the rod; for holding a load, use an external lock or check valve.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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