Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-10B
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-10B is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø20mm bore and 90mm 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
- Stroke90 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 ACEJ20X90-10B
A double acting ISO 21287 compact cylinder, the ACEJ20X90-10B pairs a 20 mm bore with a 90 mm stroke and a male-threaded 10 mm rod (the B code). At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, rising to 219.9 N at 0.7 MPa, with a theoretical ceiling of 32 kgf at 1.0 MPa. The -10 suffix is a 10 mm adjustment window: an external stop screw trims the extend stroke anywhere in an 80-90 mm range, so one cylinder serves several fixture positions without re-plumbing.
The short hard-anodized aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which matters in slim gantries and guarded cells. A fixed TPU bumper at each end absorbs end-of-stroke shock, and the S45C hard-chrome rod resists wear. In practice, plan on roughly 94 N of usable push at 0.5 MPa, which lifts about 8 kg vertically with a 2:1 margin. Note that this unit has no magnet fitted; order the -S code if you later need CMSE or DMSE switch sensing. Speed range is 30-500 mm/s.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-10B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-10B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø20 mm |
| Stroke | 90 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 ACEJ20X90-10B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×90 | Stroke length in mm. |
| -10 | 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 ACEJ20X90-10B Is Used
Small-parts ejection on assembly stations
The 80-90 mm adjustable extend stroke lets a fixture designer trim the push-off position of connectors or terminals without changing the cylinder, using about 94 N of usable force at 0.5 MPa.
Lab sample press and dispensing slides
A 20 mm bore delivering 157.1 N push and 117.8 N pull at 0.5 MPa suits light clamping of vials or slides, and the compact body fits inside benchtop guarding where a full profile cylinder will not.
Pick-and-place z-axis drop of PCB trays
Lifts about 8 kg vertically with a 2:1 margin, so it lowers loaded magazine trays into nest positions; the male rod thread accepts standard I or Y knuckles directly.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-10B the Right Cylinder?
Size against neighbours: the 16 mm bore pushes 100.5 N at 0.5 MPa, while the 25 mm bore reaches 245.4 N, so pick the 20 mm when your load sits between roughly 90 and 150 N. The stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock, so the rod can drift if air is lost and a separate holding method is needed for suspended loads. FA flange, LB foot and FTC brackets plus I and Y rod knuckles bolt straight to the ISO 21287 face; the male rod thread suits clevis-style knuckles. PT ports, M5x0.8.
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 ACEJ20X90-10B 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 the theoretical maximum is 32 kgf at 1.0 MPa. It is double acting with a 90 mm stroke adjustable down to 80 mm via the -10 stop screw, running on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, with an M5x0.8 PT port and a male-threaded 10 mm rod.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, and FA flange, LB foot and FTC brackets bolt straight to its face. Sensing requires the optional -S magnet code, which enables CMSE or DMSE switches; this model has no magnet fitted, so no switch can be read until a -S unit is ordered. A fixed TPU bumper at each end absorbs end-of-stroke impact.
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