Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X50-40B
The AirTAC Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X50-40B is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø63mm bore and 50mm 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
- Stroke50 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 ACEJ63X50-40B
The ACEJ63X50-40B is a double acting AirTAC compact cylinder built to ISO 21287, with a 63 mm bore, a 50 mm stroke and a male rod thread (B code). An external stop screw trims the extend stroke by up to 40 mm on site, so the usable extend range is 10-50 mm without changing the cylinder. At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N; at 0.7 MPa push rises to 2182.1 N. 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 where a full-length cylinder will not fit.
In practice, plan for roughly 935 N of real work at 0.5 MPa (about 0.6 of the push force), which corresponds to lifting about 79 kg vertically - or about 40 kg with a 2:1 margin. The hard-anodized aluminium body carries a 16 mm S45C hard-chrome rod, a fixed TPU bumper absorbs end-of-stroke shock at both ends, and air supply is 0.15-1.0 MPa (22-145 psi) with speeds of 30-500 mm/s. FA flange and LB foot mounts bolt straight to the ISO 21287 face. Note that the stop screw is a mechanical end stop only: on air loss the piston still drifts, so it is not a load-holding brake.
Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X50-40B Technical Specifications
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X50-40B |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø63 mm |
| Stroke | 50 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 ACEJ63X50-40B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 63 | Bore size in mm. |
| ×50 | 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 ACEJ63X50-40B Is Used
Press-fit bushings into housings
With 1558.6 N push at 0.5 MPa (2182.1 N at 0.7 MPa), the 63 mm bore presses small bearings and bushings into pump or motor housings, and the stop screw sets the exact seating depth within the 10-50 mm range.
Clamping weldment fixtures
The short ISO 21287 body fits inside tight welding and machining fixtures where an ISO 15552 profile cylinder is too long, holding steel brackets with about 935 N of usable clamping force at 0.5 MPa.
Lifting palletized parts in assembly cells
The 63 mm bore lifts roughly 79 kg vertically at 0.5 MPa (about 40 kg with a 2:1 margin), ideal for raising trays or subassemblies a short 10-50 mm distance between conveyor stops.
Is the Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X50-40B the Right Cylinder?
Size the load both ways: the 50 mm bore pushes 981.7 N at 0.5 MPa, while the 80 mm bore reaches 2513.3 N - the 63 mm bore at 1558.6 N sits squarely between them for mid-duty clamping and pressing. If your stroke may change during commissioning, the 40 mm adjustment window (usable extend range 10-50 mm) removes the need to reorder a shorter cylinder. Choose the female-thread version if you already use rod knuckles or accessories; this B version suits direct male-thread coupling. If you need position sensing, order the -S variant, since this model has no magnet and no CMSE / DMSE switch can be mounted without it.
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 ACEJ63X50-40B 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 -40 code is a 40 mm adjustment window: an external stop screw shortens the 50 mm extend stroke by up to 40 mm, giving a usable range of 10-50 mm. It is a mechanical end stop, not a mid-stroke lock - on air loss the piston still drifts. Operating pressure is 0.15-1.0 MPa (22-145 psi) and speed is 30-500 mm/s.
It is an ISO 21287 compact cylinder whose short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with a hard-anodized aluminium body, 16 mm hard-chrome rod and fixed TPU bumpers at both ends. Mounting options include FA flange and LB foot. Position sensing requires the optional -S magnet code; this model (no S) has no magnet, so CMSE / DMSE switches cannot be used. The port is 1/8" and the rod end is male thread (B code).
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