Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-50
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-50 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 ACEJ20X60-50
This ACEJ20X60-50 is a double acting ISO 21287 compact cylinder with a 20 mm bore and a 60 mm stroke that an external stop screw trims on site by up to 50 mm, giving a usable extend range of 10-60 mm. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa those figures rise to 219.9 N and 164.9 N, with a theoretical ceiling of 32 kgf at 1.0 MPa. Air supply is 0.15-1.0 MPa (22-145 psi) and rod speed runs 30-500 mm/s.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body cannot. Plan on roughly 94 N of real work at 0.5 MPa (about 0.6 of the push force), which is around 9 kg of vertical lift with a 2:1 margin. A fixed TPU bumper at each end absorbs end-of-stroke energy, and the optional -S magnet enables CMSE / DMSE switches; this unit has no magnet fitted.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-50 Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-50 |
|---|---|
| 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 ACEJ20X60-50
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×60 | Stroke length in mm. |
| -50 | 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 ACEJ20X60-50 Is Used
Fixture clamp stroke tuning
On a small assembly jig, the stop screw sets the clamp travel anywhere from 10 to 60 mm so one cylinder serves several part heights; the 157.1 N push at 0.5 MPa handles light clamps with margin to spare.
Compact ejection unit
The short body, about 50% shorter in mounting length than an ISO 15552 profile cylinder, fits inside a tight machining-fixture slide to eject finished 5-8 kg parts at up to 500 mm/s.
Presence verification press
In an electronics line, the trimmed stroke presses a connector home and retracts at 30-500 mm/s; with the optional -S magnet, a CMSE or DMSE switch confirms the end position.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-50 the Right Cylinder?
At 157.1 N push (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) when you need more margin. The -50 window means you can set the extend stroke anywhere from 10 to 60 mm, but the stop screw is a mechanical end stop only - on air loss the piston drifts, so do not treat it as a load-holding lock. FA flange or LB foot mounts bolt to the ISO 21287 face, and if position feedback is needed later, order the -S magnet code so CMSE / DMSE switches can be fitted.
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 ACEJ20X60-50 FAQ
Push is 157.1 N and pull 117.8 N at 0.5 MPa; at 0.7 MPa push is 219.9 N and pull 164.9 N, with a theoretical maximum of 32 kgf at 1.0 MPa. The -50 code is a 50 mm adjustment window: an external stop screw shortens the 60 mm extend stroke by up to 50 mm, so the usable range is 10-60 mm. It cannot lengthen the stroke past 60 mm, and the stop is not a mid-stroke lock - on air loss the piston still drifts.
It is an ISO 21287 compact cylinder with a hard-anodized aluminium body and an S45C hard-chrome-plated 10 mm rod, with a fixed TPU bumper at both ends to absorb end-of-stroke energy. Mounting options include FA flange and LB foot plus I and Y rod knuckles. Position sensing needs the optional -S magnet code, which allows CMSE / DMSE switches; this model (no S) has no magnet, so no sensor can be mounted. Port is M5x0.8, rod thread is female M6x1.0, and operating pressure is 0.15-1.0 MPa (22-145 psi).
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