Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75S
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75S 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 ACEJ20X90-75S
A double acting ISO 21287 compact cylinder, the ACEJ20X90-75S pairs a 20 mm bore with a 90 mm stroke and a 75 mm adjustment window. An external stop screw trims the extend stroke anywhere in the 15-90 mm range, so one cylinder covers several fixture positions. 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. In practice, plan for roughly 94 N of real work at 0.5 MPa, which is about 9 kg of vertical lift with a 2:1 margin.
The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs, guards and gantries. A hard-anodized aluminium body carries a hard-chrome plated S45C rod, with a fixed TPU bumper at each end to soften end-of-stroke impact. The fitted -S magnet accepts CMSE / DMSE reed or solid-state switches for end-position sensing, and FA flange or LB foot mounts bolt straight to the ISO 21287 face.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75S Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75S |
|---|---|
| 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 ACEJ20X90-75S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 20 | Bore size in mm. |
| ×90 | Stroke length in mm. |
| -75 | 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 ACEJ20X90-75S Is Used
Fixture clamping on CNC pallets
The 15-90 mm trim range lets one cylinder clamp different pallet heights; about 94 N of usable force at 0.5 MPa secures light aluminium workpieces.
Small-part divert gates on packaging lines
Pushes 157.1 N at 0.5 MPa to flip divert gates for cartons up to roughly 9 kg, with CMSE switches reporting gate position via the fitted magnet.
Sample pusher in lab automation
The compact body fits inside tight analyzer enclosures, and the stop screw dials the exact eject distance for microplate or vial trays.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75S the Right Cylinder?
At this force class, compare both ways: the 16 mm bore gives 100.5 N push at 0.5 MPa, while the 25 mm bore raises it to 245.4 N. If your load sits near 94 N, the 20 mm bore is the balanced pick. Remember the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock - on air loss the piston still drifts, so add a separate holding valve where a load must stay put. Order FA or LB mounting to match the fixture and note the female M6x1.0 rod thread and PT ports.
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 ACEJ20X90-75S 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. The theoretical maximum at 1.0 MPa is 32 kgf. Operating pressure is 0.15-1.0 MPa (22-145 psi) with proof pressure of 1.5 MPa (215 psi), speed 30-500 mm/s, and air filtered to 40 um.
The -75 code means a 75 mm window: turn the external stop screw to set the extend stroke anywhere between 15 and 90 mm. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches mount in the body slots for end-position signals. FA flange and LB foot mounts attach to the ISO 21287 face, and the fixed TPU bumpers at both ends absorb end-of-stroke impact.
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