Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-40S
The AirTAC Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-40S 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 ACEJ63X70-40S
The ACEJ63X70-40S is a double acting ISO 21287 compact cylinder with a 63 mm bore and a 70 mm stroke that an external stop screw trims by up to 40 mm, giving a usable extend range of 30-70 mm on site. At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N, rising to 2182.1 N at 0.7 MPa, with a theoretical peak of 317.9 kgf at 1.0 MPa. The hard-anodized aluminium body carries a 16 mm S45C hard-chrome rod and a 1/8" PT port.
Because the short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, it slots into tight welding jigs and gantry clamps where a full-length body will not fit. A fixed TPU bumper at each end absorbs end-of-stroke shock, and the fitted -S magnet lets CMSE or DMSE switches report end positions. As a rule of thumb, plan on roughly 935 N of real work at 0.5 MPa (about 0.6 of the push force), which lifts around 95 kg vertically - or about 47 kg with a 2:1 margin.
Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-40S Technical Specifications
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-40S |
|---|---|
| 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 ACEJ63X70-40S
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 63 | Bore size in mm. |
| ×70 | Stroke length in mm. |
| -40 | 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 ACEJ63X70-40S Is Used
Welding fixture clamping
Clamps steel brackets in automotive weld cells; the 30-70 mm trim absorbs fixture variations while 1558.6 N at 0.5 MPa holds the joint firmly.
Small press fitting
Presses bushings into aluminium housings on a short-stroke bench press, using about 935 N of usable force at 0.5 MPa for consistent seating.
Gantry part ejection
Ejects machined parts from a CNC gantry fixture where the compact body saves mounting length and the fitted magnet signals eject-complete via a DMSE switch.
Is the Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-40S the Right Cylinder?
Size this bore when your clamp or press needs roughly 1550 N at 0.5 MPa. A 50 mm bore delivers 981.7 N push at 0.5 MPa if the load is lighter, while an 80 mm bore gives 2513.3 N for heavier presses. The 40 mm window suits stations where one cylinder serves parts of slightly different heights; remember the stop screw is an end stop, not a mid-stroke lock, so the rod still drifts if air is lost. FA flange or LB foot mountings bolt to the ISO 21287 face, and the fitted magnet works with CMSE / DMSE switches for position feedback.
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 ACEJ63X70-40S 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 the theoretical maximum is 317.9 kgf at 1.0 MPa. It runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-500 mm/s, with a 1/8" PT port and a 16 mm hard-chrome rod with M10x1.5 female thread.
The -40 code means an external stop screw shortens the 70 mm extend stroke by up to 40 mm, so you can set any extend length from 30 to 70 mm with a wrench - it trims the stroke, it never extends it past 70 mm. The S in the code means the optional -S magnet is fitted, so CMSE or DMSE reed or solid-state switches can be clamped to the body slots for end-position sensing; models ordered without -S carry no magnet.
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Standard models are processed and dispatched in 3-5 business days.
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