Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X70-30
The AirTAC Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X70-30 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø40mm bore and 70mm 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
- Stroke70 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 ACEJ40X70-30
The ACEJ40X70-30 is a double acting AirTAC compact cylinder built to ISO 21287: a 40 mm bore drives a 12 mm hard-chrome S45C rod through a 70 mm stroke, with an external stop screw that trims the extend stroke by up to 30 mm on site, giving a usable range of 40-70 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 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into jigs and guarding where a full-length body will not fit.
Plan on roughly 377 N (about 38 kgf) of real work at 0.5 MPa instead of the full rating, and for vertical lifts that means it lifts about 32 kg with a 2:1 margin. The hard-anodized aluminium body carries magnet slots, but this unit has no magnet fitted - order the optional -S code to enable CMSE / DMSE switches. Air supply is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, and fixed TPU bumpers absorb end-of-stroke shock at both ends.
Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X70-30 Technical Specifications
| Model | Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X70-30 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø40 mm |
| Stroke | 70 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 ACEJ40X70-30
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×70 | Stroke length in mm. |
| -30 | 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 ACEJ40X70-30 Is Used
Fixture clamping on CNC pallets
The 628.3 N push at 0.5 MPa clamps aluminium housings in machining fixtures, and the 40-70 mm trim range lets one cylinder serve pallets of different part heights.
Packaging line pusher stations
A 70 mm stroke with a 30 mm adjustment window tracks carton width changes on a packaging conveyor, while the short ISO 21287 body fits under low guard rails.
Small part press-fit station
About 32 kg of vertical lift capacity with a 2:1 margin seats bearings or bushings into housings on an assembly bench, with the TPU bumper softening each bottom-out.
Is the Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X70-30 the Right Cylinder?
At 628.3 N push at 0.5 MPa, the 40 mm bore sits between the 32 mm (402.1 N) and the 50 mm (981.7 N); step down for lighter clamping, up if your fixture needs over 600 N of working force. The -30 window suits stations where the part position varies and you want to dial the extend stroke down from 70 mm without swapping cylinders. Note the stop screw is a mechanical end stop, not a mid-stroke lock - the rod will drift if air is lost. Bolt on FA flange or LB foot brackets, choose the female M8x1.25 rod thread as coded here, and add -S to the order code if CMSE / DMSE position 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 ACEJ40X70-30 FAQ
This 40 mm bore model pushes 628.3 N and pulls 571.8 N at 0.5 MPa; at 0.7 MPa it reaches 879.6 N push and 800.5 N pull, with a theoretical maximum of 128.1 kgf at 1.0 MPa. The extend stroke is adjustable from 40 to 70 mm via the external stop screw (the -30 window). It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-500 mm/s, with a 1/8" PT port and female M8x1.25 rod thread.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, and FA flange, LB foot and FTC brackets plus I/Y rod knuckles bolt straight to the standard face. Position sensing requires the optional -S magnet: this model as coded has no magnet, so no CMSE or DMSE switch can be read until you order the -S version. A fixed TPU bumper at each end absorbs end-of-stroke energy; it does not hold or brake a load.
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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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