Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X40-20S
The AirTAC Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X40-20S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø32mm bore and 40mm 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.
- BoreØ32 mm
- Stroke40 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 ACEJ32X40-20S
The ACEJ32X40-20S is a double acting AirTAC compact cylinder built to ISO 21287, with a 32 mm bore and a 40 mm stroke that an external stop screw can trim by up to 20 mm, giving a usable extend range of 20-40 mm. At 0.5 MPa it pushes 402.1 N and pulls 345.6 N; at 0.7 MPa those rise to 563 N and 483.8 N. The hard-anodized aluminium body is about 50% shorter in mounting length than an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit.
Because the -S code is on this model, the magnet is fitted and CMSE or DMSE reed or solid-state switches can be clamped anywhere along the body slots. In practice, plan on roughly 240 N of real work at 0.5 MPa (about 0.6 of the push figure), which corresponds to lifting around 12 kg vertically with a 2:1 margin. A fixed TPU bumper at each end absorbs end-of-stroke shock, and the S45C hard-chrome rod runs on a two-way grease-retaining seal for long service.
Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X40-20S Technical Specifications
| Model | Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X40-20S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø32 mm |
| Stroke | 40 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | 484 N |
| Max (@1.0 MPa) | 82 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 ACEJ32X40-20S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 32 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| -20 | 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 ACEJ32X40-20S Is Used
Fixture clamping on CNC pallets
The 20-40 mm adjustable extend window lets a machinist dial in clamp travel per pallet, and 402.1 N push at 0.5 MPa secures aluminium housings without crushing.
Reject pusher on packaging lines
A short 40 mm stroke trimmed to 20 mm clears misaligned cartons off a conveyor quickly, with the fitted magnet and a DMSE switch confirming rod position each cycle.
Small-part press station
For pressing dowels into plastic brackets, the 32 mm bore delivers about 240 N of usable work at 0.5 MPa, and the compact body fits under a low bench-top gantry.
Is the Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X40-20S the Right Cylinder?
At 32 mm bore this sits mid-range: a 25 mm bore gives 245.4 N push at 0.5 MPa, while a 40 mm bore reaches 628.3 N, so step up if your tooling mass climbs. The stop screw only shortens the extend stroke within the ordered 20 mm window and is a mechanical end stop, not a mid-stroke lock, so the rod will drift if air is lost. FA flange and LB foot mounts bolt to the ISO 21287 face, and the female M8x1.25 rod thread accepts standard rod knuckles. The fitted -S magnet means CMSE / DMSE switches work out of the box; operating pressure is 0.15-1.0 MPa (22-145 psi) with speed 30-500 mm/s.
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 ACEJ32X40-20S FAQ
This 32 mm bore model pushes 402.1 N and pulls 345.6 N at 0.5 MPa, and 563 N / 483.8 N at 0.7 MPa, with a theoretical maximum of 82 kgf at 1.0 MPa. It is double acting with an adjustable extend stroke: the stop screw trims the 40 mm stroke by up to 20 mm, so the working range is 20-40 mm. Ports are 1/8" (PT), the rod thread is female M8x1.25, operating pressure is 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, and temperature -20 to +70 C.
The ISO 21287 short-body design saves about 50% of the mounting length compared with an ISO 15552 profile cylinder, so it fits shallow fixtures and guarded frames. The -S code on this model means the magnet is fitted, so CMSE or DMSE reed or solid-state switches mount directly in the body slots for end-of-stroke or intermediate detection. Fixed TPU bumpers at both ends absorb end-of-stroke impact, and FA flange or LB foot mounts bolt straight onto the standard ISO 21287 face.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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