Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X55-40S
The AirTAC Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X55-40S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø32mm bore and 55mm 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
- Stroke55 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 ACEJ32X55-40S
The ACEJ32X55-40S is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 55 mm stroke by up to 40 mm, giving a usable range of 15-55 mm without changing the cylinder. At 0.5 MPa the 32 mm bore delivers 402.1 N on the extend stroke and 345.6 N on retract, rising to 563 N at 0.7 MPa. A practical rule of thumb is to plan for roughly 240 N (about 24 kgf) of real work, which corresponds to lifting about 12 kg vertically with a 2:1 margin.
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, so it slots into tight jigs, guarding and gantry frames. Fixed TPU bumpers absorb end-of-stroke energy at both ends, the optional -S magnet is fitted on this model for CMSE / DMSE switches, and FA flange or LB foot mounts bolt straight to the ISO 21287 face.
Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X55-40S Technical Specifications
| Model | Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X55-40S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø32 mm |
| Stroke | 55 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 ACEJ32X55-40S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 32 | Bore size in mm. |
| ×55 | 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 ACEJ32X55-40S Is Used
Jig clamping on CNC fixtures
The 15-55 mm trim range lets one cylinder serve several fixture heights, and 402.1 N at 0.5 MPa is enough for repeatable part clamping on a machining centre table.
Product stopper on packaging lines
A 32 mm bore with a 55 mm stroke raises and lowers a stop blade between cartons, and the compact body fits under low conveyor frames where a profile cylinder will not.
Position-verified ejector on assembly stations
With the fitted magnet, CMSE or DMSE switches confirm extend and retract on a rotary indexing table, while the short body keeps the station footprint small.
Is the Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ32X55-40S the Right Cylinder?
Size the load against 402.1 N push at 0.5 MPa; if your fixture needs more, step up to the 40 mm bore (628.3 N push at 0.5 MPa), and if the load is light the 25 mm bore (245.4 N push at 0.5 MPa) saves space and air. Remember the stop screw only shortens the extend stroke as a mechanical end stop - it is not a mid-stroke lock, so the piston still drifts if air is lost. Choose the female M8x1.25 rod thread as coded here, or order the B variant for a male thread, and add FA/LB mounting plus the -S magnet code when CMSE / DMSE sensing is needed.
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 ACEJ32X55-40S 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; the theoretical maximum is 82 kgf at 1.0 MPa. The -40 code is a 40 mm adjustment window: a stop screw on the front cover shortens the 55 mm extend stroke by up to 40 mm, so the working range is 15-55 mm. It shortens the stroke only - it never lengthens it past 55 mm, and it is a mechanical end stop, not a load-holding brake. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
The ISO 21287 compact body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-anodized aluminium body, an 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 mounted in the body slots. FA flange and LB foot mounts plus I and Y rod knuckles bolt directly to the ISO 21287 face, and the air port is 1/8".
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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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Most inquiries answered within 7-8 hours.
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