Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X90-40
The AirTAC Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X90-40 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø40mm bore and 90mm stroke, 1/8" 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.
- BoreØ40 mm
- Stroke90 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM8×1.25
- CushionFixed TPU bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X90-40
The ACEJ40X90-40 is a double acting compact cylinder built to ISO 21287, with a 40 mm bore and a 90 mm stroke that an external stop screw can trim on site by up to 40 mm, giving a usable extend range of 50-90 mm. At 0.5 MPa it pushes 628.3 N and pulls 571.8 N, rising to 879.6 N on the extend stroke at 0.7 MPa. The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs, guarding and gantries where a full-length body will not fit.
Plan on roughly 377 N of real work at 0.5 MPa rather than the full 628.3 N rating, and expect about 32 kg of vertical lift capability with a 2:1 margin (the theoretical figure is 64 kg). The hard-anodized aluminium body carries a hard-chrome plated S45C rod with a female M8x1.25 thread, and a fixed TPU bumper at each end absorbs end-of-stroke energy. If you need position feedback, order the optional -S magnet so CMSE or DMSE switches can be mounted; this version has no magnet fitted.
Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X90-40 Technical Specifications
| Model | Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X90-40 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø40 mm |
| Stroke | 90 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 572 N |
| 0.7 MPa | 880 N | 800 N |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X90-40
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×90 | 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 ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X90-40 Is Used
Press-fit bushing insertion
A 377 N usable push at 0.5 MPa seats small bushings and bearings in gearbox housings, with the 50-90 mm trim range matching different housing depths on one fixture.
Indexing stop on a rotary table
The adjustable extend stroke lets one cylinder serve several pallet positions on a machining centre table, and the short body tucks under the table guard where a longer profile cylinder cannot.
Carton hold-down on a case packer
About 32 kg of vertical lift capability with a 2:1 margin holds carton stacks flat during taping, with the fixed TPU bumper softening each downstroke at 30-500 mm/s.
Is the Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X90-40 the Right Cylinder?
At 628.3 N push at 0.5 MPa this 40 mm bore sits between the 32 mm bore (402.1 N) and the 50 mm bore (981.7 N); step up if your tooling mass or friction load approaches 600 N, step down for lighter clamping. Choose the -40 window only if your setpoints genuinely spread across 50-90 mm; a fixed-stroke ACE covers a single known position. Remember the stop screw is a mechanical end stop for the extend stroke only - on air loss the piston still drifts, so it is not a mid-stroke lock. FA flange or LB foot mounts plus I/Y rod knuckles bolt to the ISO 21287 face, and the optional -S magnet enables CMSE / DMSE switch sensing.
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 ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X90-40 FAQ
At 0.5 MPa it pushes 628.3 N and pulls 571.8 N; at 0.7 MPa push is 879.6 N and pull 800.5 N; theoretical maximum is 128.1 kgf at 1.0 MPa. The -40 code is a 40 mm adjustment window: an external stop screw shortens the 90 mm extend stroke by up to 40 mm, so the working range is 50-90 mm. It runs 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 a 1/8" port and female M8x1.25 rod thread.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, and a fixed TPU bumper at each end absorbs end-of-stroke energy. FA flange, LB foot and FTC brackets plus I and Y rod knuckles bolt straight to the standard face. Position sensing requires the optional -S magnet code, which allows CMSE or DMSE switches; without -S no magnet is fitted and no switch can be read. If the ACEJ40X90-40 does not suit the job, the fixed-stroke ACE, the double-rod ACED or the non-rotating twin-guide TACE are related alternatives.
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