Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-40B
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-40B 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 ACEJ20X60-40B
This double acting AirTAC ACEJ20X60-40B is an ISO 21287 compact cylinder with a 20 mm bore and a 60 mm stroke that an external stop screw trims anywhere in a 40 mm window, giving a usable extend range of 20-60 mm. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa those rise to 219.9 N and 164.9 N. The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures a full-length body cannot reach.
Practically, plan on roughly 94 N (about 9.6 kgf) of real work at 0.5 MPa instead of the full rating, which translates to lifting about 8 kg vertically with a 2:1 margin. The B code gives a male rod thread on the 10 mm S45C hard-chrome rod, and the hard-anodized aluminium body carries fixed TPU bumpers at both ends. No magnet is fitted on this version; order the optional -S code if you later need CMSE / DMSE switch sensing.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-40B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-40B |
|---|---|
| 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 ACEJ20X60-40B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×60 | Stroke length in mm. |
| -40 | 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 ACEJ20X60-40B Is Used
Small fixture clamping
Trims its 20-60 mm extend range with the stop screw to clamp small machined parts in a drill or milling jig, delivering about 94 N of usable force at 0.5 MPa.
Ejector on packaging lines
Pushes misaligned cartons or blisters off a conveyor lane; the 157.1 N push at 0.5 MPa is ample for light packaging product at 30-500 mm/s.
Lab and test-rig actuation
The male rod thread and short ISO 21287 body make it easy to integrate into compact bench-top test stations that press or position small samples.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-40B the Right Cylinder?
At 157.1 N push at 0.5 MPa this 20 mm bore suits light clamping and small-part transfer; step down to a 16 mm bore (100.5 N) for lighter loads or up to a 25 mm bore (245.4 N) when you need more margin. Remember the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock, so the piston still drifts if air is lost. FA flange or LB foot mounts bolt to the ISO 21287 face, and the male rod thread (B code) suits external knuckle joints.
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 ACEJ20X60-40B 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, with a theoretical maximum of 32 kgf at 1.0 MPa. The -40 code is a 40 mm adjustment window: an external stop screw shortens the 60 mm extend stroke by up to 40 mm, so the usable range is 20-60 mm. It cannot lengthen the stroke past 60 mm, and the stop is an end stop, not a load-holding lock.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-anodized aluminium body, S45C hard-chrome rod and fixed TPU bumpers at both ends. This version has no magnet, so no CMSE / DMSE switch can be fitted; order the optional -S code for sensing. FA flange and LB foot mounts plus I/Y rod knuckles bolt straight to the standard face.
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