
The AirTAC Airtac ACE Compact Cylinder ACE20X35SB is a genuine double acting ISO 21287 compact air cylinder with a Ø20mm bore and 35mm 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.
This AirTAC ACE20X35SB is a double acting compact cylinder built to ISO 21287, with a 20 mm bore and 35 mm stroke. It delivers 157.1 N of push force at 0.5 MPa, which translates to a safe working load of about 94 N or roughly 9.6 kg when you apply a 0.6 safety factor for real-world applications.
The hard-anodized aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, making it ideal for tight spaces. The optional -S magnet is fitted here, so you can mount CMSE or DMSE switches for position sensing, and the male rod thread (B code) simplifies attachment of custom tooling.
| Model | Airtac ACE Compact Cylinder ACE20X35SB |
|---|---|
| Series | ACE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 35 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.
| 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.
| ACE | ISO 21287 compact cylinder (double-acting). |
|---|---|
| 20 | Bore size in mm. |
| ×35 | 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.
Use in a small pneumatic jig to clamp thin sheet metal parts during drilling, where the 157.1 N push force holds parts firmly and the short body fits under the worktable.
Drive a label applicator head in a packaging line, using the 35 mm stroke to press labels onto small boxes with consistent force and the magnet to confirm each cycle.
Actuate a spring-loaded probe in a quality control test fixture, where the compact size and male rod thread allow easy integration into a benchtop rig for electronic component testing.
For lighter automation tasks, consider the ACE16X35 with 100.5 N push at 0.5 MPa, or step up to the ACE25X35 for 245.4 N push if you need more force. This 20 mm bore model is a balanced choice for moderate loads in compact machinery.
Since the magnet is fitted, pair it with a CMSE or DMSE switch for reliable end-of-stroke detection. The M5x0.8 port is standard for this bore, and the male rod thread allows direct mounting of fixtures without adapters.
Quick checklist
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 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits into tight jigs and guards. It has a fixed TPU bumper at both ends to absorb end-of-stroke impact, and the optional -S magnet allows CMSE or DMSE switches for position sensing.
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