Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-40B
The AirTAC Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-40B 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 ACEJ63X70-40B
This is a double acting AirTAC ACEJ63X70-40B, an ISO 21287 compact cylinder with a 63 mm bore and a 70 mm stroke that an external stop screw can trim anywhere in a 40 mm window, giving a usable extend range of 30-70 mm. At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N; at 0.7 MPa those rise to 2182.1 N and 2041.3 N, with a theoretical 317.9 kgf at 1.0 MPa. 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 where a full-length body cannot.
Plan on roughly 935 N (about 0.6 of the push force) of real work at 0.5 MPa, which corresponds to lifting about 79 kg vertically with a 2:1 margin. The hard-anodized aluminium body carries a hard-chrome-plated S45C rod with a MALE thread (the B code), fixed TPU bumpers absorb end-of-stroke energy at both ends, and speed runs 30-500 mm/s at 0.15-1.0 MPa (22-145 psi). No magnet is fitted on this version; order the -S code if you need CMSE / DMSE switch sensing.
Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-40B Technical Specifications
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-40B |
|---|---|
| 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 ACEJ63X70-40B
| 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 ACEJ63X70-40B Is Used
Press-fit bushing insertion
The 1558.6 N push at 0.5 MPa seats automotive bushings into aluminium housings, and the 40 mm window lets you trim the 70 mm stroke down to 30 mm so the ram bottoms exactly at the seat depth.
Fixture clamping on machining centers
Clamps cast-iron pump housings on a CNC fixture; the compact body saves about 50% of the mounting length of an ISO 15552 profile cylinder, fitting under low fixture plates where FA flange mounting is tight.
Pallet elevator stop stations
Positions 70 kg pallet trays on a packaging line conveyor lift; the male rod thread (B code) accepts a knuckle, and the stop screw sets the landing height anywhere from 30 to 70 mm without shimming.
Is the Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X70-40B the Right Cylinder?
At 1558.6 N push at 0.5 MPa, the 63 mm bore sits between the 50 mm bore (981.7 N) and the 80 mm bore (2513.3 N) - choose 50 mm if your load is under about 590 N of working force, step up to 80 mm if you need over 935 N. The stop screw only shortens the extend stroke within the ordered 40 mm window; it is a mechanical end stop, not a mid-stroke lock, so the rod will drift if air is lost and a separate holding valve is needed for suspended loads. FA flange or LB foot mounts bolt to the ISO 21287 face, and the male rod thread (B) suits rod knuckles and external tooling. PT ports; G thread available on request.
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 ACEJ63X70-40B 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, with a theoretical maximum of 317.9 kgf at 1.0 MPa. The -40 code is a 40 mm adjustment window: an external stop screw shortens the 70 mm extend stroke on site, so the usable range is 30-70 mm. It cannot lengthen the stroke past 70 mm, and the stop is not a load-holding brake - on air loss the piston drifts. Speed is 30-500 mm/s at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), air filtered to 40 um, temperature -20 to +70 C.
It is an ISO 21287 compact cylinder with a hard-anodized aluminium body, an S45C hard-chrome-plated 16 mm rod with a male thread (the B code), and 1/8" PT ports. Fixed TPU bumpers at both ends absorb end-of-stroke energy. This version has no magnet fitted, so no switch can be mounted; order the -S version to enable CMSE / DMSE reed or solid-state switches in the body slots. FA flange and LB foot mounts plus I and Y rod knuckles bolt to the standard ISO 21287 face, and the 250 mm maximum standard stroke for this bore covers most fixture needs.
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