Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20SB
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20SB 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 ACEJ20X60-20SB
The ACEJ20X60-20SB is a double acting AirTAC compact cylinder built to ISO 21287, with a 20 mm bore and a 60 mm stroke that an external stop screw trims on site by up to 20 mm, giving a usable extend range of 40-60 mm. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, rising to 219.9 N push at 0.7 MPa. The hard-anodized aluminium 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 go.
The -S code means the magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clipped anywhere along the body for end-of-travel signals. The B code gives a male M6x1.0 rod thread, and the fixed TPU bumper at each end absorbs end-of-stroke shock. As a rule of thumb, plan for roughly 94 N of real work at 0.5 MPa, which lifts about 8 kg vertically with a 2:1 margin - enough for small clamps, ejectors and light pick-and-place heads.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20SB Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20SB |
|---|---|
| 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 ACEJ20X60-20SB
| 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 ACEJ20X60-20SB Is Used
Small fixture clamping
Clamps light aluminium brackets or plastic housings on a machining fixture, where the 40-60 mm adjustable extend range lets one cylinder serve several part sizes.
Light pick-and-place lift
Lifts about 8 kg vertically with margin, ideal for raising small trays or stamped parts off a nest in an electronics assembly cell.
Position-verified ejector
Ejects parts from a chute with CMSE or DMSE switch feedback confirming full extend, thanks to the fitted -S magnet on the 60 mm stroke.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-20SB the Right Cylinder?
At 157.1 N push at 0.5 MPa this bore 20 unit sits between the 16 mm bore (100.5 N) and the 25 mm bore (245.4 N). If your load needs more than about 94 N of usable force, step up; if it is under 60 N, the 16 mm bore saves space and air. The 60 mm stroke is well inside the 100 mm maximum standard stroke for this bore, so it ships as a standard part. The stop screw only shortens the extend stroke and is a mechanical end stop, not a mid-stroke lock - on air loss the piston drifts, so add a valve or external stop if you must hold position. Foot (LB) and flange (FA) mountings plus I/Y rod knuckles bolt straight to the ISO 21287 face, and the fitted -S magnet lets you add CMSE / DMSE switches without reordering.
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 ACEJ20X60-20SB FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa it pushes 219.9 N and pulls 164.9 N; theoretical maximum is 32 kgf at 1.0 MPa. The -20 code is a 20 mm adjustment window: an external stop screw shortens the 60 mm extend stroke by up to 20 mm, so the working range is 40-60 mm. It runs double acting on air at 0.15-1.0 MPa (22-145 psi) at 30-500 mm/s, with a fixed TPU bumper at both ends. The stop screw is an end stop only - it never locks or holds a load.
It is an ISO 21287 compact cylinder whose hard-anodized aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits shallow gantries and guarded stations. This model carries the optional -S magnet, so CMSE or DMSE reed or solid-state switches can be mounted along the body slots for position signals. The B code gives a male M6x1.0 rod thread, the air port is M5x0.8, and FA flange or LB foot mountings plus I/Y rod knuckles attach directly to the standard ISO 21287 face.
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