Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20S
The AirTAC Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20S 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 ACEJ63X70-20S
The ACEJ63X70-20S is a double acting ISO 21287 compact cylinder with a 63 mm bore and a 70 mm stroke that can be trimmed on site. An external stop screw shortens the extend stroke by up to 20 mm, giving a usable range of 50-70 mm, and a fixed TPU bumper at each end absorbs end-of-stroke shock. At 0.5 MPa it pushes with 1558.6 N and pulls with 1458.1 N, rising to 2182.1 N at 0.7 MPa.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and gantries. A practical sizing rule: plan on roughly 935 N (about 0.6 of the push force) for real work, which corresponds to lifting around 79 kg vertically with a 2:1 margin. The -S magnet is fitted on this model, so CMSE / DMSE switches can be mounted directly in the body slots.
Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20S Technical Specifications
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20S |
|---|---|
| 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 ACEJ63X70-20S
| 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 ACEJ63X70-20S Is Used
Bench press and riveting stations
With 1558.6 N push at 0.5 MPa (2182.1 N at 0.7 MPa), the 63 mm bore suits light forming, staking and riveting on electronics and small-assembly lines.
Vertical lift-and-lower modules
The push force equates to about 159 kgf theoretical, so lifting parts of roughly 79 kg with a 2:1 margin is realistic; the 50-70 mm adjustable range dials in the exact drop height.
Conveyor gating and diverters
The 70 mm stroke, trimmed down to 50 mm via the stop screw, is a natural fit for pusher arms and gate bars on packaging and bottling conveyors running at 30-500 mm/s.
Is the Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20S the Right Cylinder?
For this force class, bore 63 delivers 1558.6 N push at 0.5 MPa. Step down to bore 50 (981.7 N) for lighter presses, or up to bore 80 (2513.3 N) when the load grows. If your stroke is fixed and never needs trimming, the fixed-stroke ACE in the same bore is the simpler order.
The stop screw is a mechanical end stop only - it shortens the extend stroke and does not lock the piston mid-stroke, so on air loss the rod can still drift. FA flange and LB foot mountings bolt to the ISO 21287 face, and the fitted -S magnet accepts CMSE / DMSE switches for end-of-stroke signalling.
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 ACEJ63X70-20S 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, with a theoretical maximum of 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 to any value from 50 to 70 mm. The stop is an end stop, not a mid-stroke lock - on air loss the piston can still drift. Operating pressure is 0.15-1.0 MPa (22-145 psi), proof 1.5 MPa (215 psi), speed 30-500 mm/s, air filtered to 40 um, temperature -20 to +70 C.
This is an ISO 21287 compact cylinder with a hard-anodized aluminium body and an S45C hard-chrome-plated 16 mm rod; the short body saves about 50% of the mounting length of an ISO 15552 profile cylinder. A fixed TPU bumper at both ends absorbs end-of-stroke energy. The -S magnet is fitted on this model, so CMSE / DMSE reed or solid-state switches can be clipped into the body slots. FA flange, LB foot and rod knuckles I and Y bolt straight to the ISO 21287 mounting face; the rod end is female M10x1.5 and the port is 1/8" PT.
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