Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ50X120-20SB
The AirTAC ACEJ50~63 Adjustable Compact Air Cylinder ACEJ50X120-20SB is a genuine double acting, double rod, adjustable stroke ISO 21287 compact air cylinder with a Ø50mm bore and 120mm 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.
- BoreØ50 mm
- Stroke120 mm
- Port size1/8"
- Acting typeDouble acting, double rod, 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 ACEJ50X120-20SB
The ACEJ50X120-20SB is a double acting ISO 21287 compact cylinder with a 50 mm bore and a 120 mm stroke that an external stop screw trims by up to 20 mm, giving a usable extend range of 100-120 mm. At 0.5 MPa it pushes 981.7 N and pulls 881.2 N, rising to 1374.4 N at 0.7 MPa. Because the short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, it slots into tight jigs and guarding where a full-length body would not fit.
This model carries the optional -S magnet and the B male rod thread on a 16 mm hard-chrome S45C rod, so CMSE / DMSE switches mount directly on the body slots. The hard-anodized aluminium body, 1/8" PT ports and fixed TPU bumpers at both ends keep it serviceable and fast at 30-500 mm/s.
Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ50X120-20SB Technical Specifications
| Model | Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ50X120-20SB |
|---|---|
| Series | ACEJ compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø50 mm |
| Stroke | 120 mm |
| Acting type | Double acting, double rod, 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 (Ø50mm)
| Pressure | Force (both ways) |
|---|---|
| 0.5 MPa | 881 N |
| 0.7 MPa | 1234 N |
| Max (@1.0 MPa) | 180 kgf |
ACEJ is double-rod: the rear rod that carries the stroke adjuster exits the rear cover, so both piston faces lose rod area. The rod-side (annular) area is used for both directions (conservative).
Model Code: Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ50X120-20SB
| ACEJ | ISO 21287 compact cylinder (adjustable-stroke). |
|---|---|
| 50 | Bore size in mm. |
| ×120 | 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 (double rod, 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 ACEJ50X120-20SB Is Used
Pusher on a bottling conveyor
A 120 mm stroke diverts bottles or cartons between lanes, and the compact body fits under low guarding where an ISO 15552 profile cylinder would overhang.
Is the Airtac ACEJ50~63 Adjustable Compact Air Cylinder ACEJ50X120-20SB the Right Cylinder?
Choose the 50 mm when your jig needs roughly 60 kgf of working force in a short envelope. The stop screw only shortens the extend stroke and is not a mid-stroke lock, so on air loss the piston still drifts - add a valve or external stop if you must hold position. FA flange, LB foot and FTC brackets plus I/Y rod knuckles bolt to the ISO 21287 face, and the fitted -S magnet lets CMSE / DMSE switches report end positions.
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 ACEJ50X120-20SB FAQ
At 0.5 MPa it pushes 981.7 N and pulls 881.2 N; at 0.7 MPa push is 1374.4 N and pull 1233.7 N, with a theoretical maximum of 200.2 kgf at 1.0 MPa. It is double acting with a 20 mm adjustment window on the 120 mm stroke, runs on air filtered to 40 um at 0.15-1.0 MPa (22-145 psi), proof pressure 1.5 MPa (215 psi), temperature -20 to +70 C, speed 30-500 mm/s, 1/8" PT ports and a 16 mm male-thread rod.
It is an ISO 21287 compact cylinder whose short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it suits tight gantries and jigs. A fixed TPU bumper at each end absorbs end-of-stroke energy. FA flange, LB foot and FTC brackets plus I/Y knuckles bolt to the standard face. This model carries the optional -S magnet, so CMSE / DMSE reed or solid-state switches can be clamped into the body slots for end-position sensing.
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Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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