Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X20-10
The AirTAC Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X20-10 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø40mm bore and 20mm 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
- Stroke20 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 ACEJ40X20-10
A double acting ISO 21287 compact cylinder, the ACEJ40X20-10 pairs a 40 mm bore with a 20 mm stroke that an external stop screw trims down to 10 mm on site. At 0.5 MPa it pushes 628.3 N and pulls 571.8 N, so it suits short-thrust clamping and positioning in tight fixtures. The hard-anodized aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, letting it fit inside guards and gantries where a full-length body will not.
Plan on roughly 377 N of real work at 0.5 MPa rather than the full 628.3 N rating, which equals lifting about 32 kg vertically with a 2:1 margin. The S45C hard-chrome rod runs in a roller-burnished bore, a fixed TPU bumper absorbs end-of-stroke energy at both ends, and speed spans 30-500 mm/s. This unit has no magnet; order the -S code if you need CMSE or DMSE switch sensing.
Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X20-10 Technical Specifications
| Model | Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X20-10 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø40 mm |
| Stroke | 20 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 ACEJ40X20-10
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×20 | Stroke length in mm. |
| -10 | 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 ACEJ40X20-10 Is Used
Clamp fixtures on CNC machining centers
The 628.3 N push at 0.5 MPa holds aluminum or mild-steel parts in milling fixtures, and the 10-20 mm trimmed stroke clears chip covers in seconds.
Eject pins on small assembly presses
A short 20 mm stroke with on-site trimming to 10 mm ejects finished bushings or pins from dies without over-travel, at up to 500 mm/s.
Carton push-off on packaging lines
With about 377 N of usable force at 0.5 MPa, the 40 mm bore nudges cartons or blisters off a conveyor lane inside a compact guard envelope.
Is the Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X20-10 the Right Cylinder?
At 40 mm bore this sits between the 32 mm size (402.1 N push at 0.5 MPa) and the 50 mm size (981.7 N push at 0.5 MPa); step up to 50 mm if your jig needs nearly double the thrust. The -10 window shortens the extend stroke only, from 20 mm down to 10 mm, and acts as a mechanical end stop, not a mid-stroke lock, so the rod still drifts if air is lost. FA flange or LB foot mountings bolt to the ISO 21287 face, and the female M8x1.25 rod thread takes standard rod knuckles.
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 ACEJ40X20-10 FAQ
At 0.5 MPa it pushes 628.3 N and pulls 571.8 N; at 0.7 MPa push rises to 879.6 N and pull to 800.5 N, with a theoretical maximum of 128.1 kgf at 1.0 MPa. The -10 code gives a 10 mm adjustment window: an external stop screw shortens the 20 mm extend stroke to any setting from 10 to 20 mm. 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, with a fixed TPU bumper at each end to absorb end-of-stroke impact. This version has no magnet fitted, so no switch can be read from it; order the -S variant to enable CMSE or DMSE switches. FA flange and LB foot mountings plus I/Y rod knuckles bolt straight to the standard face.
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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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