Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X120-40B
The AirTAC Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X120-40B is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø32mm bore and 120mm 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
- Stroke120 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 ACEJ32X120-40B
A double acting ISO 21287 compact cylinder, the ACEJ32X120-40B pairs a 32 mm bore with a 120 mm stroke that an external stop screw trims on site by up to 40 mm, giving a usable extend range of 80-120 mm. At 0.5 MPa it pushes 402.1 N and pulls 345.6 N, rising to 563 N at 0.7 MPa. As a rule of thumb, plan on roughly 241 N (about 24 kgf) of real work at 0.5 MPa instead of the full rating.
The short hard-anodized aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit. A fixed TPU bumper at each end absorbs end-of-stroke impact, the S45C hard-chrome rod takes the B male-thread option, and 1/8" ports feed air filtered to 40 um. Running 0.15-1.0 MPa (22-145 psi) at 30-500 mm/s, it lifts about 20 kg vertically once a 2:1 margin is applied to the 41 kgf theoretical push.
Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X120-40B Technical Specifications
| Model | Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X120-40B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø32 mm |
| Stroke | 120 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 ACEJ32X120-40B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 32 | Bore size in mm. |
| ×120 | 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 ACEJ32X120-40B Is Used
Multi-product jig clamping
On an automotive bracket welding fixture, the 40 mm trim window lets one cylinder clamp part variants from 80 to 120 mm wide without swapping hardware, with 402.1 N holding force at 0.5 MPa.
Packaging line reject pusher
A food packaging conveyor uses the 120 mm stroke to sweep off-spec cartons into a bin, running at 30-500 mm/s with the male rod thread driving a custom pusher plate.
Electronics press-fit station
A PCB connector press applies about 241 N of usable force at 0.5 MPa to seat terminals, with the compact body fitting inside the machine guard where a longer cylinder cannot.
Is the Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X120-40B the Right Cylinder?
At 402.1 N push at 0.5 MPa, this 32 mm bore suits clamping and positioning in the 20-25 kg class; step down to a 25 mm bore (245.4 N) for lighter fixtures or up to 40 mm (628.3 N) when the load grows. The 40 mm window lets one cylinder serve several product widths between 80 and 120 mm. Note the stop screw is an end stop only: on air loss the piston still drifts, so it is not a mid-stroke lock. Bolt FA flange or LB foot brackets to the ISO 21287 face, and if you need position feedback, order the -S variant so CMSE / DMSE switches can be used - this code has no magnet fitted.
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 ACEJ32X120-40B FAQ
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, with a theoretical maximum of 82 kgf at 1.0 MPa. The -40 code means an external stop screw shortens the 120 mm extend stroke by up to 40 mm, so the working range is 80-120 mm. It runs on air at 0.15-1.0 MPa (22-145 psi) at 30-500 mm/s.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with FA flange and LB foot options plus I/Y rod knuckles on the standard face. A fixed TPU bumper at each end absorbs end-of-stroke impact but never locks or holds a load. Sensing requires the optional -S magnet code; this model has no magnet, so CMSE or DMSE switches cannot be mounted unless you order that variant.
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1-Year Warranty
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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Most inquiries answered within 7-8 hours.
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