Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20B
The AirTAC Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20B 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 ACEJ63X70-20B
Double acting and built to the ISO 21287 compact format, the ACEJ63X70-20B turns 0.5 MPa into 1558.6 N of push and 1458.1 N of pull, while an external stop screw trims the extend stroke anywhere in a 20 mm window, so the 70 mm stroke can be set between 50 and 70 mm on site. At 0.7 MPa the same bore reaches 2182.1 N, and the theoretical ceiling is 317.9 kgf at 1.0 MPa.
The hard-anodized aluminium body with an S45C hard-chrome plated 16 mm rod runs at 30-500 mm/s on air filtered to 40 um, across 0.15-1.0 MPa (22-145 psi) and -20 to +70 C. Its short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into tight palletizer frames and press fixtures. As a rule of thumb, plan roughly 935 N of real work at 0.5 MPa - about 95 kg lifted vertically with a 2:1 margin. Fixed TPU bumpers absorb end-of-stroke energy at both ends; this unit has a male rod thread (B code) and no magnet fitted, so order the optional -S version if CMSE / DMSE switching is needed later.
Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20B Technical Specifications
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20B |
|---|---|
| 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 ACEJ63X70-20B
| 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 ACEJ63X70-20B Is Used
Press fixture clamping
The 1558.6 N push at 0.5 MPa clinches steel brackets in welding jigs, and the 50-70 mm adjustable range lets one cylinder serve several die heights without shimming.
Palletizer push-off
With about 95 kg of vertical-lift equivalent at a 2:1 margin, the 63 mm bore nudges cartons off conveyor ends inside gantry frames too shallow for a full-length profile cylinder.
Gate and chute diverters
The 70 mm stroke with a 20 mm trim window matches diverter gate travel exactly, and the male rod thread accepts knuckle joints on sliding bulk-gate plates in food plants.
Is the Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-20B the Right Cylinder?
At 63 mm bore you sit between the 50 mm (981.7 N push at 0.5 MPa) and the 80 mm (2513.3 N push at 0.5 MPa) sizes; step down when the load is under 900 N, step up past about 1500 N of working force. The stop screw only shortens the extend stroke and is a mechanical end stop, not a mid-stroke lock - on air loss the piston still drifts, so add a separate holding valve for suspended loads. FA flange or LB foot mounts bolt to the standard ISO 21287 face, and the male rod thread suits clevis-style tooling. If position feedback matters, specify the -S magnet code at order time.
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 ACEJ63X70-20B FAQ
At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N; at 0.7 MPa it pushes 2182.1 N and pulls 2041.3 N; the theoretical maximum is 317.9 kgf at 1.0 MPa. The -20 code means an external stop screw shortens the 70 mm extend stroke by up to 20 mm, giving a usable 50-70 mm range. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), speed 30-500 mm/s, -20 to +70 C, with a 16 mm rod, 1/8" PT port and male rod thread.
The ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it fits shallow guards and fixture plates. Fixed TPU bumpers at both ends absorb end-of-stroke impact. Mounting options include FA flange and LB foot plus I/Y rod knuckles on the standard face. This unit has no magnet; the optional -S code adds one so CMSE or DMSE reed or solid-state switches can be clipped to the body slot.
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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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