
The AirTAC Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X55-30 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.
This is a double acting ISO 21287 compact cylinder with an adjustable extend stroke: an external stop screw on the ACEJ63X55-30 trims the 55 mm stroke by up to 30 mm, giving a usable range of 25-55 mm without changing the cylinder. At 0.5 MPa the 63 mm bore delivers 1558.6 N push and 1458.1 N pull, rising to 2182.1 N push at 0.7 MPa, with a theoretical maximum of 317.9 kgf at 1.0 MPa. The short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight machine frames where a full-length cylinder will not fit.
In practice, plan on roughly 935 N of real work at 0.5 MPa (about 0.6 of the push rating), and expect it to lift about 79 kg vertically once a 2:1 margin is applied. The hard-anodized aluminium body carries a 16 mm S45C hard-chrome rod with a female M10x1.5 thread, and a fixed TPU bumper at each end absorbs end-of-stroke energy. The magnet is not fitted on this version; order the optional -S code if you later need CMSE / DMSE switch sensing.
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ63X55-30 |
|---|---|
| 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.
| 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.
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 63 | Bore size in mm. |
| ×55 | Stroke length in mm. |
| -30 | 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.
The 1558.6 N push at 0.5 MPa clamps aluminum housings in dedicated jigs, and the 25-55 mm adjustable range lets one cylinder serve several fixture heights.
With about 935 N of usable work force at 0.5 MPa, the 63 mm bore handles light staking, riveting and press-fit tasks where a full-length profile cylinder will not fit under the press head.
Running at 30-500 mm/s, the compact body diverts cartons on conveyor lines, and the stop screw trims the throw to match lane widths without swapping cylinders.
Compare force classes before committing: the bore 50 version pushes 981.7 N at 0.5 MPa, while stepping up to bore 80 gives 2513.3 N, so the 63 mm bore sits squarely in the mid-range for clamping and pressing jigs. If your fixture needs position feedback, remember the -S magnet must be ordered up front, since this model ships without one. FA flange and LB foot mounts plus I and Y rod knuckles 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 lock.
Quick checklist
At 0.5 MPa it pushes 1558.6 N and pulls 1458.1 N; at 0.7 MPa push rises to 2182.1 N (pull 2041.3 N), and the theoretical maximum is 317.9 kgf at 1.0 MPa. The -30 code is a 30 mm adjustment window: an external stop screw shortens the 55 mm extend stroke on site, so the usable range is 25-55 mm. It shortens the stroke only and never extends past the ordered stroke, and it is a mechanical end stop, not a mid-stroke lock.
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, female M10x1.5 rod thread and 1/8" PT ports. A fixed TPU bumper at each end absorbs end-of-stroke energy. FA flange and LB foot mounts plus I and Y rod knuckles bolt to the standard face. Sensing requires the optional -S magnet, which enables CMSE / DMSE switches; this model without -S carries no magnet.
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