Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-50S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-50S 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 ACEJ20X60-50S
The ACEJ20X60-50S 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 can trim anywhere in a 50 mm window, 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. The hard-anodized aluminium body is about 50% shorter in mounting length than an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit.
For sizing the job, treat roughly 94 N (about 0.6 of the push force) as the realistic working output at 0.5 MPa, which corresponds to lifting around 8 kg vertically with a 2:1 margin. The S code means the magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clamped into the body slots for end-of-stroke signalling. A fixed TPU bumper at each end absorbs end-of-stroke energy, the S45C rod is hard-chrome plated, and the M6x1.0 female rod thread accepts standard knuckle accessories.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-50S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-50S |
|---|---|
| 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 ACEJ20X60-50S
| 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 ACEJ20X60-50S Is Used
Small-parts ejection on assembly fixtures
The 10-60 mm trimmed extend range lets one cylinder serve several part heights on a jig, pushing about 94 N of usable force at 0.5 MPa to eject stamped terminals or moulded clips.
Position-verified test stations
With the -S magnet fitted, CMSE or DMSE switches report end-of-stroke on electronics test benches, while the 157.1 N push at 0.5 MPa presses connectors home gently.
Compact labelling and marking heads
The short ISO 21287 body fits inside print-and-apply gantries, and the 50 mm window lets operators dial the stroke down to the exact label or dot-peen depth.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-50S the Right Cylinder?
At 157.1 N push at 0.5 MPa this bore 20 unit suits light clamping and positioning; step down to a bore 16 (100.5 N) for smaller parts or up to a bore 25 (245.4 N) when the load grows. Remember the stop screw only shortens the extend stroke and is not a mid-stroke lock, so the rod will drift if air is lost. Bolt on FA flange or LB foot mounts, order PT or G ports, and rely on the fitted -S magnet with CMSE / DMSE switches where position feedback is needed.
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 ACEJ20X60-50S FAQ
It is a 20 mm bore, 60 mm stroke double acting cylinder with a 50 mm adjustment window, so the extend stroke can be trimmed to any length from 10 to 60 mm. Push force 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; theoretical maximum is 32 kgf at 1.0 MPa. Operating pressure is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, port M5x0.8, rod thread M6x1.0 female.
The ISO 21287 short-body design saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-anodized aluminium body, S45C hard-chrome rod and a fixed TPU bumper at each end that only decelerates at the ends of travel. This model carries the optional -S magnet, so CMSE or DMSE reed or solid-state switches can be mounted in the body slots; FA flange and LB foot mounts plus I and Y rod knuckles bolt straight to the standard face.
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