Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75B
The AirTAC Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75B 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 ACEJ20X90-75B
A double acting ISO 21287 compact cylinder, the ACEJ20X90-75B pairs a 20 mm bore with a 90 mm stroke and a male-threaded 10 mm rod. At 0.5 MPa it pushes 157.1 N and pulls 117.8 N, enough for light clamping, indexing and eject duties. An external stop screw trims the extend stroke anywhere within the ordered 75 mm window, so one cylinder covers a usable 15-90 mm range without swapping parts.
The hard-anodized aluminium body is about 50% shorter in mounting length than an ISO 15552 profile cylinder, which makes it a natural fit for tight jigs, guarding and gantry frames. A fixed TPU bumper at each end absorbs end-of-stroke shock, and the two-way piston seal stores grease for long service. Plan on roughly 94 N of usable work at 0.5 MPa, which lifts about 8 kg vertically with a 2:1 margin. Running spec: 0.15-1.0 MPa (22-145 psi), 30-500 mm/s, -20 to +70 C.
Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75B Technical Specifications
| Model | Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75B |
|---|---|
| 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 ACEJ20X90-75B
| 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 ACEJ20X90-75B Is Used
Fixture clamp with trimmable stroke
On a small machining fixture, the 75 mm window lets one 20 mm cylinder serve several part heights - dial the extend stroke from 15 to 90 mm with the stop screw instead of ordering a new cylinder per variant.
Packaging line part ejector
Ejects cartons or trays off a conveyor lane; 157.1 N at 0.5 MPa clears light loads at up to 500 mm/s, and the short ISO 21287 body slots under low guarding.
Lab and test station actuator
Drives a small press or sample pusher in a test rig; the male rod thread takes an I or Y knuckle directly, and the 15-90 mm adjustable range handles varied sample sizes.
Is the Airtac ACEJ12 Adjustable Compact Cylinder ACEJ20X90-75B the Right Cylinder?
At 157.1 N push (0.5 MPa) this 20 mm bore suits small parts handling and light clamps; step down to the 16 mm bore (100.5 N) for tighter loads or up to the 25 mm bore (245.4 N) when more thrust is needed. The stop screw is a mechanical end stop only - it shortens the extend stroke but does not lock the piston if air is lost, so add a separate holding valve where a load must stay put. Mount with FA flange or LB foot hardware, and note the rod here is male thread (B code) with a PT port. Position sensing needs the optional -S magnet code; without it no CMSE or DMSE switch can be fitted.
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 ACEJ20X90-75B FAQ
At 0.5 MPa it pushes 157.1 N and pulls 117.8 N; at 0.7 MPa push rises to 219.9 N, and the theoretical maximum is 32 kgf at 1.0 MPa. The -75 code is a 75 mm adjustment window: an external stop screw shortens the 90 mm extend stroke on site, giving a usable 15-90 mm range. It is an end stop only - it never holds a load if air pressure is lost.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-anodized aluminium barrel, S45C hard-chrome rod and fixed TPU bumpers at both ends. Mounting options include FA flange and LB foot plus I/Y rod knuckles. Position sensing is possible only when the optional -S magnet is ordered, enabling CMSE or DMSE switches; this model without -S carries no magnet.
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