Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X50-40S
The AirTAC Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X50-40S is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø40mm bore and 50mm 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
- Stroke50 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 ACEJ40X50-40S
A double acting compact cylinder built to ISO 21287, the ACEJ40X50-40S pairs a 40 mm bore with a 50 mm stroke that an external stop screw trims on site by up to 40 mm, giving a usable extend range of 10-50 mm. At 0.5 MPa it pushes 628.3 N and pulls 571.8 N; at 0.7 MPa those rise to 879.6 N and 800.5 N. 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.
For real-world sizing, plan on roughly 377 N of usable work at 0.5 MPa (about 60% of the push rating), which corresponds to lifting about 32 kg vertically - or about 16 kg with a 2:1 margin. The fitted -S magnet accepts CMSE / DMSE reed or solid-state switches for end-of-stroke signalling, and the fixed TPU bumper at both ends absorbs end-of-stroke energy. Air supply is 0.15-1.0 MPa (22-145 psi), filtered to 40 um, with speeds of 30-500 mm/s.
Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X50-40S Technical Specifications
| Model | Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X50-40S |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø40 mm |
| Stroke | 50 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 ACEJ40X50-40S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 ACEJ40X50-40S Is Used
Clamping fixture on a CNC machining line
The 10-50 mm trimmed extend range lets one cylinder serve several part heights, with 628.3 N of push at 0.5 MPa holding steel blanks firmly against the jig.
Packaging carton pusher
A 50 mm stroke at 30-500 mm/s kicks cartons off a conveyor, and the fitted magnet with a CMSE switch confirms each push cycle back to the PLC.
Small-parts press station
About 377 N of practical working force seats bearings or bushings into light housings, while the compact body fits inside the machine guard envelope.
Is the Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X50-40S the Right Cylinder?
At this force class the 40 mm bore sits between the 32 mm bore (402.1 N push at 0.5 MPa) and the 50 mm bore (981.7 N push at 0.5 MPa), so step up if your fixture needs near-1000 N. Remember the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock - on air loss the piston still drifts, so add a separate holding valve where a load must stay put. FA flange or LB foot mountings bolt to the ISO 21287 face, and this model already carries the -S magnet, so order CMSE or DMSE switches alongside it. Female M8x1.25 rod thread, PT ports.
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 ACEJ40X50-40S FAQ
At 0.5 MPa it pushes 628.3 N and pulls 571.8 N; at 0.7 MPa it pushes 879.6 N and pulls 800.5 N, with a theoretical maximum of 128.1 kgf at 1.0 MPa. The -40 code is a 40 mm adjustment window: an external stop screw shortens the 50 mm extend stroke by up to 40 mm, so the working range is 10-50 mm. The stop is a mechanical end stop only - it does not lock or hold a load if air is lost.
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 a fixed TPU bumper 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 mountings fit the standard ISO 21287 face; ports are 1/8" PT and the rod end is female M8x1.25.
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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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