Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X20-20S
The AirTAC Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X20-20S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø32mm bore and 20mm 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
- Stroke20 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 ACEJ32X20-20S
The ACEJ32X20-20S is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 20 mm stroke on site anywhere in the 0-20 mm window set by the -20 code, so one cylinder can be dialled to several fixture positions without swapping parts. At 0.5 MPa it pushes 402.1 N and pulls 345.6 N, rising to 563 N push at 0.7 MPa, with a theoretical ceiling of 82 kgf at 1.0 MPa. The magnet is the optional -S code and this model carries it, so CMSE or DMSE reed and solid-state switches mount directly in the body slots.
The hard-anodized aluminium body with an S45C hard-chrome plated rod saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into shallow guards and tight jig plates. In practice, plan for roughly 241 N (about 24 kgf) of real work at 0.5 MPa, and for vertical lifts count on about 20 kg with a 2:1 margin. A fixed TPU bumper at each end absorbs end-of-stroke energy, and speed runs 30-500 mm/s at 0.15-1.0 MPa (22-145 psi).
Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X20-20S Technical Specifications
| Model | Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X20-20S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø32 mm |
| Stroke | 20 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 ACEJ32X20-20S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 32 | Bore size in mm. |
| ×20 | 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 ACEJ32X20-20S Is Used
Jig clamping on CNC fixtures
The 0-20 mm adjustable window lets one clamp cylinder serve several part heights on a machining fixture, with 402.1 N push at 0.5 MPa holding steel blanks firmly.
Carton kickers on packing lines
A short 20 mm stroke trimmed by the stop screw deflects cartons off a conveyor at 30-500 mm/s, and the fitted magnet with a CMSE switch confirms each kick for the PLC.
Sample press in lab automation
About 20 kg of vertical lift capacity with a 2:1 margin suits pressing caps onto sample vials inside compact analyser frames where a full-length body will not fit.
Is the Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X20-20S the Right Cylinder?
Size up if 402.1 N at 0.5 MPa is marginal: the 40 mm bore delivers 628.3 N push at the same pressure. Size down to the 25 mm bore (245.4 N push) when the load is light and panel space is tighter. Remember the stop screw only shortens the extend stroke and is not a mid-stroke lock - on air loss the piston still drifts, so support the load separately. FA flange and LB foot mountings plus I/Y rod knuckles bolt to the ISO 21287 face; the fitted -S magnet pairs with CMSE/DMSE switches for end-of-stroke 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 ACEJ32X20-20S FAQ
At 0.5 MPa it pushes 402.1 N and pulls 345.6 N; at 0.7 MPa push is 563 N and pull 483.8 N, with a theoretical maximum of 82 kgf at 1.0 MPa. The -20 code gives a 20 mm adjustment window: an external stop screw shortens the 20 mm extend stroke anywhere in a 0-20 mm range. It is a mechanical end stop only - it never holds a load on air loss.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-anodized aluminium body, S45C hard-chrome rod and fixed TPU bumpers at both ends. This model carries the optional -S magnet, so CMSE and DMSE reed or solid-state switches mount in the body slots. FA flange and LB foot mountings, plus I/Y rod knuckles, bolt straight to the ISO 21287 face.
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Standard models are processed and dispatched in 3-5 business days.
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