Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X55-40S
The AirTAC Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X55-40S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø40mm 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.
- BoreØ40 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 ACEJ40X55-40S
The ACEJ40X55-40S is a double acting ISO 21287 compact cylinder with a 40 mm bore and a 55 mm stroke that an external stop screw trims by up to 40 mm, giving a usable extend range of 15-55 mm. At 0.5 MPa it pushes 628.3 N and pulls 571.8 N, rising to 879.6 N on the extend stroke at 0.7 MPa. The hard-anodized aluminium body is about 50% shorter in mounting length than an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body cannot fit.
Because the bore 40 rod is 12 mm S45C steel with hard-chrome plating, side loads at the M8x1.25 female thread stay well controlled in repeat work. A practical sizing rule: keep real work to about 377 N (0.6 of the push force), which corresponds to lifting roughly 32 kg vertically with a 2:1 margin. The fitted -S magnet lets CMSE or DMSE switches report end positions, and fixed TPU bumpers at both ends absorb stroke-end shock.
Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X55-40S Technical Specifications
| Model | Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X55-40S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø40 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 572 N |
| 0.7 MPa | 880 N | 800 N |
| Max (@1.0 MPa) | 128 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 ACEJ40X55-40S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 40 | 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 ACEJ40X55-40S Is Used
Clamping welded brackets
A 628.3 N push at 0.5 MPa seats steel brackets in a welding fixture, and the 15-55 mm adjustable range lets one cylinder serve several bracket heights.
Pushing cartons on a transfer line
With about 377 N of practical working force, the 40 mm bore kicks cartons between conveyor lanes at 30-500 mm/s without overshooting the stop.
Lifting pallet-collar lids
The vertical-lift equivalent of about 32 kg with a 2:1 margin suits raising lids and light pallet parts; CMSE switches confirm up and down positions.
Is the Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X55-40S the Right Cylinder?
Compare force classes before ordering: the 32 mm bore delivers 402.1 N push at 0.5 MPa while this 40 mm bore gives 628.3 N, and the 50 mm bore steps up to 981.7 N. If your fixture needs more than 55 mm of travel, bore 40 accepts standard strokes to 200 mm. The stop screw only shortens the extend stroke and is not a mid-stroke lock - on air loss the piston still drifts, so add a valve or external stop if you must hold a load. FA flange and LB foot mountings bolt to the ISO 21287 face; the -S magnet is already fitted on this model 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 ACEJ40X55-40S FAQ
At 0.5 MPa it pushes 628.3 N and pulls 571.8 N; at 0.7 MPa push is 879.6 N, and the theoretical maximum is 128.1 kgf at 1.0 MPa. The -40 code is a 40 mm adjustment window: an external stop screw shortens the 55 mm extend stroke to anywhere in a 15-55 mm range. It is a mechanical end stop only - it never holds a load on air loss. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, ideal for cramped fixtures. The -S magnet is fitted on this model, so CMSE or DMSE reed or solid-state switches can be clamped into the body slots to signal end positions. FA flange and LB foot mountings plus I and Y rod knuckles attach to the standard ISO 21287 face, and the air ports are 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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