Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-40SB
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-40SB 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 ACEJ20X60-40SB
The ACEJ20X60-40SB 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 across 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, rising to 219.9 N push at 0.7 MPa, with a theoretical ceiling of 32 kgf at 1.0 MPa. The male rod thread (B code) suits inline tooling, and the -S magnet is fitted, so CMSE or DMSE switches can be mounted for end-of-stroke sensing.
Because the short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, it slots into tight jigs and guarding where a full-length body cannot. For sizing, treat roughly 94 N (about 9.6 kg of force) as the practical working output at 0.5 MPa, which means this unit lifts about 8 kg vertically with a 2:1 margin. The hard-anodized aluminium body carries an S45C hard-chrome rod, fixed TPU bumpers sit at both ends, and speed spans 30-500 mm/s on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi).
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-40SB Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-40SB |
|---|---|
| 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 ACEJ20X60-40SB
| 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 ACEJ20X60-40SB Is Used
Small-parts ejector on assembly fixtures
The 20-60 mm adjustable extend range lets one cylinder serve several part heights on an electronics assembly fixture, with the fitted magnet confirming ejection via a DMSE switch.
Light press-fitting of connectors
About 94 N of practical working force at 0.5 MPa suits pressing M8 connectors or small bushings into plastic housings, and the male rod thread attaches directly to a press ram.
Stop-gate on a conveyor lane
Used as a pop-up stop for 8 kg or lighter cartons on a sorting lane, the compact body fits under guarding where an ISO 15552 profile cylinder would be too long.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X60-40SB the Right Cylinder?
Compare both directions before committing: the 16 mm bore delivers 100.5 N push at 0.5 MPa, while the 25 mm bore reaches 245.4 N, so this 20 mm unit sits squarely between them for light-to-medium clamping. Remember the stop screw only shortens the extend stroke within the 40 mm window and is not a mid-stroke lock - on air loss the piston still drifts, so add a separate valve or lock for load holding. FA flange, LB foot and I/Y rod knuckles bolt to the ISO 21287 face; if you need position feedback, this model already carries the optional -S magnet for CMSE / DMSE switches.
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 ACEJ20X60-40SB FAQ
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 push and 164.9 N pull, 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 working range is 20-60 mm. It cannot lengthen the stroke beyond 60 mm, and the stop is not a load-holding brake.
It is an ISO 21287 compact cylinder - about 50% shorter in mounting length than an ISO 15552 profile cylinder - with a hard-anodized aluminium body, S45C hard-chrome rod and fixed TPU bumpers at both ends. The port is M5x0.8, the rod end is male thread, and pressure runs 0.15-1.0 MPa (22-145 psi) at 30-500 mm/s. This model carries the optional -S magnet, so CMSE or DMSE reed or solid-state switches can be clipped into the body slots for position sensing.
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