Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X50-20B
The AirTAC Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X50-20B 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 ACEJ63X50-20B
The ACEJ63X50-20B is a double acting ISO 21287 compact cylinder with an adjustable extend stroke. Its 63 mm bore delivers 1558.6 N pushing and 1458.1 N pulling at 0.5 MPa, rising to 2182.1 N at 0.7 MPa, with a theoretical peak of 317.9 kgf at 1.0 MPa. The -20 code gives a 20 mm adjustment window: an external stop screw trims the 50 mm extend stroke down to 30 mm on site, so one cylinder covers several fixture positions without swapping hardware.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which matters in tight clamping stations and gantry frames. A practical sizing rule: at 0.5 MPa roughly 935 N (about 95 kg of force) is a sensible working figure, and the rod can lift around 79 kg vertically with a 2:1 margin. The 16 mm hard-chrome-plated S45C rod ends in a male thread (the B code), the body is hard-anodized aluminium with fixed TPU bumpers at both ends, and the port is 1/8". Speed range is 30-500 mm/s over 0.15-1.0 MPa (22-145 psi).
Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X50-20B Technical Specifications
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X50-20B |
|---|---|
| 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 ACEJ63X50-20B
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 63 | Bore size in mm. |
| ×50 | 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 ACEJ63X50-20B Is Used
Pneumatic press stations
With 1558.6 N push at 0.5 MPa (2182.1 N at 0.7 MPa), the 63 mm bore suits bench-top pressing, staking and riveting jigs where the 30-50 mm adjustable stroke sets the die gap per part.
Fixture clamping on machining lines
The short body drops into milling and lathe fixtures where an ISO 15552 profile cylinder is too long, and the stop screw lets one clamp setting serve different workpiece heights.
Vertical lift-and-lower modules
Halving the 158.9 kgf theoretical lift gives about 79 kg of vertical capacity with margin - useful for raising palletized parts or tooling in assembly cells.
Is the Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X50-20B the Right Cylinder?
At 63 mm you sit in a strong mid-heavy class: a 50 mm bore pushes 981.7 N at 0.5 MPa while an 80 mm bore reaches 2513.3 N, so pick the 63 mm when your clamp or press load lands between roughly 600 and 950 N of real work. Remember the stop screw is an end stop only - it sets the extend position but does not lock the piston if air is lost. Mounting: FA flange or LB foot bolt to the ISO 21287 face, with I and Y rod knuckles available. This unit has no magnet; if you need CMSE or DMSE position switches, order the -S version instead.
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 ACEJ63X50-20B FAQ
At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N; at 0.7 MPa those figures rise to 2182.1 N and 2041.3 N, with a theoretical maximum of 317.9 kgf at 1.0 MPa. The -20 code means a 20 mm adjustment window: an external stop screw shortens the 50 mm extend stroke to any setting from 30 to 50 mm. It is an end stop, not a mid-stroke lock, so the rod still drifts if air pressure is lost. Operating range is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, air filtered to 40 um.
It is an ISO 21287 compact cylinder whose hard-anodized aluminium body saves about 50% of the mounting length of an ISO 15552 profile cylinder, with fixed TPU bumpers at both ends and a male-threaded 16 mm rod (B code). Sensing is not fitted on this model: the magnet is the optional -S code, so order ACEJ63X50-20SB if you want CMSE or DMSE switches to work. FA flange and LB foot mountings bolt straight to the standard ISO 21287 face.
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