Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-50SB
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-50SB 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 ACEJ20X60-50SB
The ACEJ20X60-50SB 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. The -50 code gives a 50 mm adjustment window, so the extend stroke can be set anywhere from 10 to 60 mm without changing the cylinder. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, rising to 219.9 N push at 0.7 MPa, with a theoretical maximum of 32 kgf at 1.0 MPa. Applying a 0.6 rule of thumb to the push force leaves roughly 94 N of usable working force, which lifts about 9 kg vertically - and about 4-5 kg with a 2:1 margin.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight pick-and-place heads and fixture plates where a full-length body will not fit. The hard-anodized aluminium barrel carries a hard-chrome plated S45C rod with a male thread (the B code), fixed TPU bumpers at both ends absorb end-of-stroke shock, and because this model carries the optional -S magnet, CMSE / DMSE reed or solid-state switches can be mounted directly in the body slots.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-50SB Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-50SB |
|---|---|
| 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 ACEJ20X60-50SB
| 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 ACEJ20X60-50SB Is Used
Fixture clamping on CNC jigs
The 10-60 mm adjustable extend stroke lets one cylinder serve several jig heights, and 157.1 N push at 0.5 MPa clamps light aluminium or plastic workpieces securely.
Small-part lift in assembly cells
With about 9 kg of practical vertical lift at 0.5 MPa, the 20 mm bore raises connectors, covers and sub-assemblies between conveyor and pallet, while the compact body fits shallow gantry frames.
Position-verified ejector on packaging lines
The fitted -S magnet accepts CMSE / DMSE switches so the PLC confirms each 60 mm extend cycle, and the short body saves roughly half the mounting length of an ISO 15552 profile cylinder in crowded guarding.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-50SB the Right Cylinder?
Size against neighbours: the 16 mm bore delivers 100.5 N push at 0.5 MPa, while stepping up to 25 mm gives 245.4 N push - choose the 20 mm when your load sits between those classes. Remember the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock, so the rod will still drift if air is lost; use a separate valve or lock for load holding. FA flange or LB foot mounts and I/Y rod knuckles bolt to the standard ISO 21287 face, and the fitted -S magnet lets CMSE / DMSE switches report end positions. Speed range is 30-500 mm/s on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi).
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 ACEJ20X60-50SB FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; 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 20 mm bore uses an M5x0.8 port and a 10 mm male-thread rod, the extend stroke is adjustable from 10 to 60 mm via the -50 stop screw, speed is 30-500 mm/s, and operating pressure is 0.15-1.0 MPa (22-145 psi) with 1.5 MPa (215 psi) proof pressure.
It is an ISO 21287 compact cylinder with a hard-anodized aluminium barrel, threaded aluminium covers, a hard-chrome plated S45C rod and fixed TPU bumpers at both ends - about 50% shorter in mounting length than an ISO 15552 profile cylinder. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches mount in the body slots; FA flange, LB foot and I/Y knuckle hardware bolt to the standard face.
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