Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X25-20S
The AirTAC Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X25-20S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø32mm bore and 25mm 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
- Stroke25 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 ACEJ32X25-20S
The ACEJ32X25-20S is a double acting ISO 21287 compact cylinder with an adjustable extend stroke. A 32 mm bore delivers 402.1 N push and 345.6 N pull at 0.5 MPa, rising to 563 N push at 0.7 MPa. The -20 code means an external stop screw trims the 25 mm stroke by up to 20 mm on site, giving a usable extend range of 5-25 mm without changing the cylinder.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and guarding. A fixed TPU bumper at each end absorbs end-of-stroke shock, and the hard-anodized aluminium body with an S45C hard-chrome plated 12 mm rod stands up to continuous cycling. Because this model carries the -S magnet, CMSE or DMSE reed and solid-state switches can be fitted for end-position sensing. At 0.5 MPa, plan on roughly 240 N (about 24 kgf) of real working force, which lifts around 12 kg vertically with a 2:1 margin.
Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X25-20S Technical Specifications
| Model | Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X25-20S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø32 mm |
| Stroke | 25 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 ACEJ32X25-20S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 32 | Bore size in mm. |
| ×25 | 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 ACEJ32X25-20S Is Used
Fixture clamping
The 5-25 mm adjustable extend range lets a machinist set exact clamp travel on a CNC fixture plate, with 402.1 N of push holding aluminium parts against a stop.
Packaging pusher
On a snack-food conveyor line, the compact body fits under low guarding while the -S magnet and a DMSE switch confirm each carton push is complete.
Small press fit
A 24 kgf-class working force at 0.5 MPa presses bearings into small housings on an electronics assembly bench, with the stop screw set to a repeatable 8 mm stroke.
Is the Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X25-20S the Right Cylinder?
Size by force: the 32 mm bore gives 402.1 N push at 0.5 MPa; step down to a 25 mm bore (245.4 N) for lighter clamping or up to a 40 mm bore (628.3 N) if the load grows. Note the stop screw only shortens the extend stroke and is not a mid-stroke lock, so the rod can drift if air is lost. FA flange or LB foot mounts bolt to the ISO 21287 face, and the fitted -S magnet pairs with CMSE / DMSE switches.
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 ACEJ32X25-20S 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 is a 20 mm adjustment window: an external stop screw shortens the 25 mm extend stroke by up to 20 mm, so the usable range is 5-25 mm. It cannot lengthen the stroke beyond 25 mm, and the stop is not a load-holding brake.
It is an ISO 21287 compact cylinder whose body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a fixed TPU bumper at both ends and 30-500 mm/s speed. This model includes the optional -S magnet, so CMSE or DMSE reed and solid-state switches can be mounted in the body slots. Ports are 1/8" PT, the rod thread is female M8x1.25, and FA or LB mounting bolts to the standard ISO 21287 face.
Authorized Export Seller
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.
Fast Reply
Most inquiries answered within 7-8 hours.
Request a Quote for Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X25-20S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.