Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X55-20SB
The AirTAC Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X55-20SB is a genuine double acting, adjustable stroke ISO 21287 compact air cylinder with a Ø63mm bore and 55mm 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
- Stroke55 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 ACEJ63X55-20SB
The ACEJ63X55-20SB is a double acting AirTAC ISO 21287 compact cylinder with an adjustable extend stroke. Its 63 mm bore delivers 1558.6 N of push force and 1458.1 N of pull force at 0.5 MPa, rising to 2182.1 N at 0.7 MPa, with a theoretical maximum of 317.9 kgf at 1.0 MPa. The -20 code gives a 20 mm adjustment window: an external stop screw trims the 55 mm stroke down on site to any extend length in the 35-55 mm range, so one cylinder serves several fixture positions without reordering. The S code means the magnet is fitted, so CMSE or DMSE reed and solid-state switches can be mounted anywhere along the body slots.
The short ISO 21287 body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which makes this 63 mm model practical inside tight machine frames, guarding and gantry tooling. A hard-anodized aluminium body carries an S45C hard-chrome-plated 16 mm rod with a male thread (B code), and a fixed TPU bumper at each end absorbs end-of-stroke impact. For planning, treat roughly 60% of the push rating as usable work at 0.5 MPa, about 935 N, and note that this equates to lifting roughly 79 kg vertically at full push force, or about 40 kg with a 2:1 margin.
Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X55-20SB Technical Specifications
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X55-20SB |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø63 mm |
| Stroke | 55 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 ACEJ63X55-20SB
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 63 | Bore size in mm. |
| ×55 | 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 ACEJ63X55-20SB Is Used
CNC fixture clamping
The 1558.6 N push force at 0.5 MPa clamps steel housings in machining fixtures, and the 35-55 mm adjustable window lets one cylinder fit varied part heights.
Press-fit and staking stations
With about 2182 N available at 0.7 MPa, this bore handles light press-fit, staking and marking operations on small assemblies where a full-length profile cylinder will not fit.
Heavy gate diverting on packaging lines
The 63 mm bore pushes product gates and diverters weighing up to about 40 kg vertically equivalent with a 2:1 margin, while the fitted magnet and CMSE switches confirm gate position.
Is the Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X55-20SB the Right Cylinder?
At 63 mm bore this sits in the mid-heavy force class: 1558.6 N push at 0.5 MPa. Step down to the 50 mm bore (981.7 N push) for lighter clamping, or up to the 80 mm bore (2513.3 N push) when the load demands more. Remember the stop screw is a mechanical end stop for the extend stroke only, not a mid-stroke lock, so the piston will still drift if air pressure is lost. Mounting choices include FA flange and LB foot brackets plus I and Y rod knuckles that bolt straight to the ISO 21287 face, and the fitted -S magnet lets CMSE or DMSE switches report end positions. Air supply is 0.15-1.0 MPa (22-145 psi), speed 30-500 mm/s, fluid air filtered to 40 um.
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 ACEJ63X55-20SB FAQ
At 0.5 MPa the 63 mm bore gives 1558.6 N push and 1458.1 N pull; at 0.7 MPa it gives 2182.1 N push and 2041.3 N pull; theoretical maximum is 317.9 kgf at 1.0 MPa. The -20 code is a 20 mm adjustment window: an external stop screw shortens the 55 mm extend stroke to any length between 35 and 55 mm. It is a mechanical end stop for extension only, not a mid-stroke lock, so the load can still drift on air loss. 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, ideal for tight machine frames. The hard-anodized aluminium body has a fixed TPU bumper at both ends and an S45C hard-chrome 16 mm male-thread rod (B code). FA flange and LB foot brackets plus I and Y rod knuckles bolt to the standard face. Because this model carries the optional -S magnet, CMSE or DMSE reed and solid-state switches can be slid into the body slots for position feedback. The air port is 1/8" and the maximum standard stroke for this bore is 250 mm.
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