Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø20mm bore and 60mm 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
- Stroke60 mm
- Port sizeM5×0.8
- Acting typeDouble acting, adjustable stroke
- Rod threadM6×1.0
- CushionFixed TPU bumper (both ends)
About the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20
The ACEJ20X60-20 is a double acting ISO 21287 compact cylinder with an adjustable extend stroke. A 20 mm bore delivers 157.1 N push and 117.8 N pull at 0.5 MPa, rising to 219.9 N push at 0.7 MPa, with a theoretical peak of 32 kgf at 1.0 MPa. An external stop screw trims the 60 mm stroke by up to 20 mm, giving a usable extend range of 40-60 mm without changing the cylinder.
The hard-anodized aluminium body with an S45C hard-chrome rod saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into shallow fixtures and guarding. A fixed TPU bumper at each end absorbs end-of-stroke shock, and speed runs 30-500 mm/s across 0.15-1.0 MPa (22-145 psi) air. Plan on roughly 94 N of real work at 0.5 MPa (about 0.6 of the push force), which is a vertical lift of around 9 kg - halve that to about 5 kg for a 2:1 margin when lifting parts. No magnet is fitted; order the -S code if you need CMSE / DMSE switch sensing.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20 Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 60 mm |
| Acting type | Double acting, adjustable stroke |
| 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 ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×60 | Stroke length in mm. |
| -20 | Adjustable stroke window (mm the extend stroke can be shortened on site). |
| 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 ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20 Is Used
Small-part ejection from plastic molds
The 40-60 mm adjustable extend range lets the setter dial the ejector throw to the cavity depth, while 157.1 N at 0.5 MPa clears lightweight molded caps from the tool.
Indexing stop on rotary assembly dial
As a retractable stop for 100-200 mm dial plates, the 20 mm window absorbs fixture tolerance, and the compact body fits under the dial where a full-length profile cylinder cannot.
Reagent tray lift in lab automation
With about 9 kg of vertical lift at 0.5 MPa (5 kg at a 2:1 margin), it raises microplate trays smoothly at 30-500 mm/s inside tight analyzer enclosures.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20 the Right Cylinder?
At 157.1 N push at 0.5 MPa this 20 mm bore suits light clamping and positioning; step down to a 16 mm bore (100.5 N) for smaller loads or up to a 25 mm bore (245.4 N) if your jig needs more margin. Remember the stop screw only shortens the extend stroke - it is not a mid-stroke lock, so the rod still drifts if air is lost. Mounting: FA flange or LB foot plus I/Y rod knuckles bolt to the ISO 21287 face; add the optional -S magnet if your panel needs CMSE / DMSE position feedback.
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 ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20 FAQ
Push is 157.1 N and pull 117.8 N at 0.5 MPa; at 0.7 MPa push rises to 219.9 N and pull to 164.9 N, with a theoretical maximum of 32 kgf at 1.0 MPa. It is double acting with a 60 mm stroke adjustable down to 40 mm via the stop screw, port M5x0.8, female M6x1.0 rod thread, 10 mm rod, operating pressure 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s and -20 to +70 C.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper at both ends and FA flange, LB foot or FTC bracket mounting on the standard face. Sensing requires the optional -S magnet code; this model has no magnet fitted, so CMSE or DMSE switches can only be used if you order the -S version.
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