Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20
The AirTAC Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20 is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø63mm 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.
- BoreØ63 mm
- Stroke70 mm
- Port size1/8"
- Acting typeDouble acting, adjustable stroke
- Rod threadM10×1.5
- 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 ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20
The ACEJ63X70-20 is a double acting ISO 21287 compact cylinder with a 63 mm bore and a 70 mm stroke that an external stop screw trims on site by up to 20 mm, giving a usable extend range of 50-70 mm. At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N, rising to 2182.1 N at 0.7 MPa. As a rule of thumb, plan for roughly 935 N of real work at 0.5 MPa, which is about 95 kg of practical pushing capacity.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight clamping fixtures and machine frames. In vertical use it can lift about 159 kg at 0.5 MPa, or roughly 79 kg with a 2:1 margin. The hard-anodized aluminium body carries an S45C hard-chrome rod, fixed TPU bumpers at both ends, and runs at 30-500 mm/s on 0.15-1.0 MPa (22-145 psi) filtered air. This version has no magnet; order the optional -S code to enable CMSE / DMSE switches.
Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20 Technical Specifications
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20 |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø63 mm |
| Stroke | 70 mm |
| Acting type | Double acting, adjustable stroke |
| Port size | 1/8" |
| Rod thread | M10×1.5 |
| 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 250 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1458 N |
| 0.7 MPa | 2182 N | 2041 N |
| Max (@1.0 MPa) | 318 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 63 | Bore size in mm. |
| ×70 | Stroke length in mm. |
| -20 | 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 ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20 Is Used
Clamping of machined housings
The 1558.6 N push at 0.5 MPa secures aluminium gearbox housings in a CNC fixture, and the 20 mm window lets the setter trim the 70 mm stroke down to 50 mm for shorter part batches.
Press-fit of bushings
With about 95 kg of practical pushing capacity at 0.5 MPa, the cylinder seats bronze bushings into pump housings on a small assembly press, lifting parts of up to roughly 79 kg vertically with a 2:1 margin.
Stop and position on packaging lines
The compact body, about 50% shorter in mounting length than an ISO 15552 profile cylinder, fits between conveyor frames to stop and index cartons at 30-500 mm/s.
Is the Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20 the Right Cylinder?
At 63 mm this sits in the mid-heavy class: a 50 mm bore gives 981.7 N push at 0.5 MPa while an 80 mm bore reaches 2513.3 N, so pick 63 mm when your load falls between those figures. The stop screw is a mechanical end stop for the extend stroke only, not a mid-stroke lock, so the rod will still drift if air is lost. FA flange and LB foot mountings bolt to the ISO 21287 face, and the female M10x1.5 rod thread accepts standard rod knuckles. If you need position sensing, order the -S variant with the optional magnet for CMSE / DMSE switches.
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 ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20 FAQ
At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N; at 0.7 MPa push is 2182.1 N and pull 2041.3 N; theoretical maximum is 317.9 kgf at 1.0 MPa. The -20 code is a 20 mm adjustment window: an external stop screw shortens the 70 mm extend stroke by up to 20 mm, so the working range is 50-70 mm. The screw is an end stop only and never holds a load against air loss. Air supply is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, port 1/8" PT, rod thread M10x1.5 female.
It is an ISO 21287 compact cylinder whose short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with fixed TPU bumpers at both ends and FA flange or LB foot options. Position sensing requires the optional -S magnet code; this model has no magnet fitted, so CMSE / DMSE switches only work on the -S variant. For strokes beyond the 250 mm standard maximum for bore 63, a made-to-order stroke is available.
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