Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X120-100
The AirTAC Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X120-100 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø40mm bore and 120mm 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
- Stroke120 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 ACEJ40X120-100
The ACEJ40X120-100 is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw trims the 120 mm stroke down by up to 100 mm, giving a usable range of 20-120 mm without changing the cylinder. At 0.5 MPa the 40 mm bore delivers 628.3 N on the extend stroke and 571.8 N on retract, rising to 879.6 N push at 0.7 MPa, with a theoretical maximum of 128.1 kgf at 1.0 MPa. As a rule of thumb, plan for roughly 377 N of real work at 0.5 MPa, which corresponds to lifting about 32 kg vertically with a 2:1 margin.
The hard-anodized aluminium body with an S45C hard-chrome plated rod saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight clamping fixtures and machine frames. A fixed TPU bumper at each end absorbs end-of-stroke energy, and FA flange or LB foot mounts bolt straight to the ISO 21287 face. Operating range is 0.15-1.0 MPa (22-145 psi) at 30-500 mm/s. This version has no magnet; order the optional -S code if you later need CMSE / DMSE switch position sensing.
Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X120-100 Technical Specifications
| Model | Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X120-100 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø40 mm |
| Stroke | 120 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 ACEJ40X120-100
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 40 | Bore size in mm. |
| ×120 | Stroke length in mm. |
| -100 | 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 ACEJ40X120-100 Is Used
Clamp fixture on a CNC machining centre
The 20-120 mm adjustable range lets one cylinder serve several fixture heights, with 628.3 N at 0.5 MPa holding aluminium housings steady during milling.
Carton press-down on a packaging line
The short body fits under low guarding where an ISO 15552 profile cylinder would not, and the stop screw sets the exact press depth per carton size.
Part ejection from a stamping die
At 30-500 mm/s the stroke can be trimmed to eject finished brackets from the die without fouling the tooling, using the LB foot mount on the die shoe.
Is the Airtac ACEJ32~40 Adjustable Cushion Compact Cylinder ACEJ40X120-100 the Right Cylinder?
At 628.3 N push at 0.5 MPa this 40 mm bore suits clamping and pressing duties up to roughly 60 kgf; step down to the 32 mm bore (402.1 N push) for lighter jigs or up to the 50 mm bore (981.7 N push) when the load grows. Remember the stop screw is a mechanical end stop for the extend stroke, not a mid-stroke lock, so the piston still drifts if air is lost. Choose the female M8x1.25 rod thread shown here or add B for a male thread, pair with FA/LB mounting, and specify the -S code only if CMSE / DMSE sensing is required.
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 ACEJ40X120-100 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 (pull 800.5 N), with a theoretical maximum of 128.1 kgf at 1.0 MPa. The -100 code is a 100 mm adjustment window: an external stop screw shortens the 120 mm extend stroke by up to 100 mm, so the working range is 20-120 mm. It is a mechanical end stop only and never holds a load on air loss.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with FA flange and LB foot options plus I/Y rod knuckles. This model has no magnet fitted; the optional -S code adds one so CMSE or DMSE switches can be mounted. Supply air filtered to 40 um at 0.15-1.0 MPa (22-145 psi); ports are 1/8" PT and the rod thread is female M8x1.25.
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Standard models are processed and dispatched in 3-5 business days.
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