Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X55-30
The AirTAC Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X55-30 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 ACEJ40X55-30
A double acting ISO 21287 compact cylinder with an adjustable extend stroke, the ACEJ40X55-30 pairs a 40 mm bore with a 55 mm stroke and a 30 mm adjustment window. At 0.5 MPa it pushes 628.3 N and pulls 571.8 N, so it sits comfortably in the mid-force class for clamping, pressing and positioning. The external stop screw trims the extend stroke anywhere in the 25-55 mm range on site, no cylinder swap needed.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it drops into tight jigs and guarded stations. The hard-anodized aluminium body carries a hard-chrome plated S45C rod with a female M8x1.25 thread, and a fixed TPU bumper at each end absorbs end-of-stroke shock. For vertical work, the 628.3 N push equals about 64 kg of lift, so plan on roughly 32 kg with a 2:1 margin.
Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X55-30 Technical Specifications
| Model | Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X55-30 |
|---|---|
| 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 ACEJ40X55-30
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×55 | 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 ACEJ40X55-30 Is Used
Fixture clamping on CNC pallets
The 25-55 mm adjustable window lets one cylinder serve several pallet fixtures, with 628.3 N of clamp force at 0.5 MPa holding steel parts steady through machining.
Bench press for bushing insertion
A 40 mm bore delivers about 64 kg of press equivalent, enough to seat small bushings and dowels in assembly jigs at 30-500 mm/s.
Stopper gates on packaging lines
Short body fits under guarding where a full-length profile cylinder will not, and the stop screw dials the gate rise to match product height.
Is the Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X55-30 the Right Cylinder?
At 628.3 N push at 0.5 MPa, the 40 mm bore suits loads in the 30-60 kg class; step down to the 32 mm bore (402.1 N) for lighter clamps or up to the 50 mm bore (981.7 N) when the job needs more muscle. Remember the stop screw is a mechanical end stop only: on air loss the rod drifts, so add a separate lock if the load must be held. FA flange or LB foot mounts bolt to the ISO 21287 face, and if you later need position feedback, order the -S variant so CMSE / DMSE switches can be fitted.
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 ACEJ40X55-30 FAQ
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, with a theoretical maximum of 128.1 kgf at 1.0 MPa. It is double acting with an adjustable extend stroke (30 mm window, usable 25-55 mm), runs on 0.15-1.0 MPa (22-145 psi) air filtered to 40 um, proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, temperature -20 to +70 C, with a 1/8" 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, so it fits shallow pockets and guarded stations. Mounts include FA flange, LB foot, FTC brackets and I/Y rod knuckles. Position sensing needs the optional -S magnet code; this unit has no magnet, so CMSE / DMSE switches cannot be fitted unless you order the -S version.
Authorized Export Seller
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.
Fast Reply
Most inquiries answered within 7-8 hours.
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