Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X45-20S
The AirTAC Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X45-20S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø32mm bore and 45mm 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
- Stroke45 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 ACEJ32X45-20S
The ACEJ32X45-20S is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 45 mm stroke by up to 20 mm on site, giving a usable range of 25-45 mm without swapping the cylinder. At 0.5 MPa the 32 mm bore delivers 402.1 N push and 345.6 N pull, rising to 563 N push at 0.7 MPa. As a rule of thumb, plan for roughly 240 N (about 24 kgf) of real work at 0.5 MPa, which corresponds to lifting about 12 kg vertically with a 2:1 margin.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs, guarding and gantries. A hard-anodized aluminium body carries an S45C hard-chrome plated rod, fixed TPU bumpers absorb end-of-stroke energy at both ends, and the fitted -S magnet lets CMSE / DMSE reed or solid-state switches report end positions. Speed range is 30-500 mm/s over 0.15-1.0 MPa (22-145 psi).
Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X45-20S Technical Specifications
| Model | Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X45-20S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø32 mm |
| Stroke | 45 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 ACEJ32X45-20S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 32 | Bore size in mm. |
| ×45 | 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 ACEJ32X45-20S Is Used
Clamping of machined aluminium brackets
The 402.1 N push at 0.5 MPa holds light alloy parts in CNC fixtures, and the 25-45 mm adjustable range lets the setter dial in the clamp position per part family.
Small press-fit and marking station
With about 563 N push at 0.7 MPa, the cylinder handles pin insertion and dot marking on electronics housings where a full-length profile cylinder will not fit the cell.
Position-verified ejection on packaging lines
The fitted -S magnet with CMSE / DMSE switches confirms extend and retract on a carton reject arm running at up to 500 mm/s.
Is the Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X45-20S the Right Cylinder?
Size the load first: if your application needs more than about 240 N of usable force at 0.5 MPa, step up to the 40 mm bore (628.3 N push); if under 100 N, the 25 mm bore (245.4 N push) is a smaller, cheaper choice. The 20 mm window suits fixtures where the exact stop position is tuned during commissioning, such as clamping or press-fit stations. Remember the stop screw is a mechanical end stop only - it does not hold a load if air is lost. FA flange or LB foot mounts bolt to the ISO 21287 face, and this -S model already carries the magnet for CMSE / DMSE switch mounting.
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 ACEJ32X45-20S FAQ
At 0.5 MPa it pushes 402.1 N and pulls 345.6 N; at 0.7 MPa it pushes 563 N and pulls 483.8 N; theoretical maximum is 82 kgf at 1.0 MPa. The -20 code sets a 20 mm adjustment window: a stop screw shortens the 45 mm extend stroke to any value from 25 mm up, so one cylinder covers several product sizes. The stop is a mechanical end stop, not a load-holding brake - on air loss the piston can still drift.
It is an ISO 21287 compact cylinder whose 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 / DMSE reed or solid-state switches can be fitted in the body slots. FA flange and LB foot mounts plus I and Y rod knuckles bolt to the standard ISO 21287 face; the rod end is female M8x1.25 and the air port is 1/8" PT.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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