Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE50X20S
The AirTAC Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE50X20S is a genuine single acting, push (spring return) ISO 21287 compact air cylinder with a Ø50mm bore and 20mm 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
- Stroke20 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- 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 ASE Single Acting Plunger Type Compact Air Cylinder ASE50X20S
A single acting push cylinder with spring return, the ASE50X20S uses compressed air to extend its 16 mm rod and a return spring to retract it, so only one air line is needed. At the 50 mm bore it delivers 875.5 N of push at 0.5 MPa (1268.2 N at 0.7 MPa), already net of the spring, and it starts working from just 0.2 MPa. In practice that means roughly 525 N of usable force if you keep a margin, enough to lift about 45 kg vertically at a 2:1 safety factor.
The ISO 21287 compact body is hard-anodized aluminium with an S45C hard-chrome-plated rod, and it saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs and guarding where a full-length body will not fit. This -S version carries the optional magnet, so CMSE or DMSE switches can be clipped on for end-of-stroke detection. A fixed TPU bumper at each end absorbs end-of-stroke energy, and the 20 mm stroke keeps cycle times fast at 50-500 mm/s.
Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE50X20S Technical Specifications
| Model | Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE50X20S |
|---|---|
| Series | ASE compact cylinder |
| Standard | ISO 21287 |
| Bore size | Ø50 mm |
| Stroke | 20 mm |
| Acting type | Single acting, push (spring return) |
| Port size | 1/8" |
| Rod thread | M10×1.5 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.2 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 500 mm/s |
| Cushion | Fixed TPU bumper (both ends) |
| Max standard stroke | Up to 25 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 | Push force (spring return) |
|---|---|
| 0.5 MPa | 875.5 N |
| 0.7 MPa | 1268.2 N |
Single-acting push: air extends the rod; the return spring retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa. Single-acting strokes are short (Ø12 to 10 mm, Ø16-100 to 25 mm).
Model Code: Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE50X20S
| ASE | ISO 21287 compact cylinder (single-acting push, spring-return). |
|---|---|
| 50 | Bore size in mm. |
| ×20 | Stroke length in mm. |
| 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 ASE Single Acting Plunger Type Compact Air Cylinder ASE50X20S Is Used
Carton kick-off on packing lines
The 20 mm stroke and 875.5 N push at 0.5 MPa are enough to kick a carton or tray sideways off a conveyor stop, and the spring return readies the next cycle without a second valve.
Fixture part ejection
After a press or welding step, the rod pushes the finished bracket out of a locating nest; the compact body fits inside the fixture plate where a longer cylinder cannot.
Monitored clamp-and-release
With the fitted magnet, CMSE or DMSE switches confirm the clamp has retracted before the robot picks, protecting the gripper from a misplaced part.
Is the Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE50X20S the Right Cylinder?
At 875.5 N push at 0.5 MPa, the 50 mm bore sits between the 40 mm (556.8 N) and 63 mm (1420.5 N) sizes; step down if your load is under 500 N, step up if you need over 1000 N. Remember the spring drives the rod home on air loss, so this cylinder retracts by default and will not hold a mid-stroke position. The female M10x1.5 rod thread and PT ports accept standard fittings, and FA/FB flange, LB foot, CA/CB clevis, CR, SDB or FTC mounts bolt straight to the ISO 21287 face. If you need a powered return instead of a spring, choose the double-acting ACE; for pull action, look at the ATE.
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 0.2 – 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 Single-acting: do not force the rod against the spring.
- check Installation by qualified personnel per AirTAC docs.
Airtac ASE Single Acting Plunger Type Compact Air Cylinder ASE50X20S FAQ
It is a single acting push, spring-return cylinder: air extends the rod and the spring retracts it. Push force is 875.5 N at 0.5 MPa and 1268.2 N at 0.7 MPa, both already net of the return spring. Minimum working pressure is 0.2 MPa, the rated range is 0.2-1.0 MPa (28-145 psi), proof pressure is 1.5 MPa (215 psi), and speed is 50-500 mm/s. Fluid is air filtered to 40 um, with a -20 to +70 C temperature range.
The ISO 21287 compact body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it fits shallow fixtures and tight guards. This model carries the optional -S magnet, so CMSE reed or DMSE solid-state switches mount directly on the body slots for end-of-stroke signalling. A fixed TPU bumper at each end absorbs end-of-stroke energy, and FA/FB flange, LB foot, CA/CB clevis, CR, SDB or FTC mounting plus I/Y rod knuckles bolt straight to the standard face.
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