Airtac ACE Compact Cylinder ACE20X70B
The AirTAC Airtac ACE Compact Cylinder ACE20X70B is a genuine double acting ISO 21287 compact air cylinder with a Ø20mm bore and 70mm 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
- Stroke70 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 ACE20X70B
This AirTAC ACE20X70B is a double acting ISO 21287 compact cylinder with a 20 mm bore and a 70 mm stroke, delivering a 157.1 N push force and a 117.8 N pull 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 cells where space is at a premium.
The hard-anodized aluminium body and S45C hard-chrome plated rod resist wear in continuous cycling. With a fixed TPU bumper at both ends, it absorbs end-of-stroke energy, and its male rod thread (B code) simplifies attachment. For a safe working load, plan for about 94 N of real work at 0.5 MPa, which translates to lifting roughly 9.6 kg vertically with a 2:1 safety margin.
Airtac ACE Compact Cylinder ACE20X70B Technical Specifications
| Model | Airtac ACE Compact Cylinder ACE20X70B |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 70 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 ACE20X70B
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×70 | 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 ACE20X70B Is Used
Compact Jig Clamping
Use in a small assembly fixture to clamp a 20 mm wide component during a screw-driving operation, where the 70 mm stroke fits within tight guard rails.
Label Applicator Press
Drive a labeling head to press labels onto small cartons in a packaging line, leveraging the 157.1 N push force at 0.5 MPa for consistent contact.
Light Duty Part Ejector
Mount on a CNC machine to eject finished parts from a vice, using the 70 mm stroke to push parts clear of the work area without taking up extra space.
Is the Airtac ACE Compact Cylinder ACE20X70B the Right Cylinder?
For lighter indexing tasks, consider the ACE16X70 with a 100.5 N push force, while the ACE25X70 offers a stronger 245.4 N push if your application needs more thrust. This ACE20X70B has no magnet fitted, so it cannot be used with CMSE or DMSE sensors unless you order the optional -S version. The M5x0.8 port suits small-bore pneumatic circuits, and the male rod thread provides a direct mounting point for tooling.
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 ACE20X70B 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), with a proof pressure of 1.5 MPa (215 psi).
The ACE20X70B has a short body that is about 50% shorter than an ISO 15552 profile cylinder, so it fits into confined spaces like inside guarding or between machine frames. It uses a fixed TPU bumper at both ends to absorb impact, and the optional -S magnet version is needed if you want to mount CMSE or DMSE sensors for position detection.
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