This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ASE50X20S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ASE50X20S in place of this model. The ACE replacement is a current-production ISO 21287 compact cylinder in the same bore, stroke and force class, with a matching short body and the same mounting-accessory family, so it fits the same envelope. Confirm mounting-interface dimensions against the ACE datasheet before ordering.
Airtac ASP Single Acting Guided Compact Cylinder ASP50X20S
The AirTAC Airtac ASP Single Acting Guided Compact Cylinder ASP50X20S is a single acting, push (spring return) DIN-standard tight/compact air cylinder with a Ø50mm bore and 20mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ASE50X20S (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ50 mm
- Stroke20 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- Rod threadM10×1.5
- StatusDiscontinued → ASE50X20S
About the Airtac ASP Single Acting Guided Compact Cylinder ASP50X20S
A single acting push cylinder with spring return, the ASP50X20S uses shop air to extend its 16 mm rod and an internal 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), both figures already net of the return spring, and it starts moving from just 0.2 MPa. The -S code on this model means the optional magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clipped on for end-of-stroke signalling.
The short ISO 21287-class body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into tight jigs and guarding where a full-length body will not fit. A fixed TPU bumper at each end decelerates the rod, and the hard-anodized aluminium body carries an S45C hard-chrome rod for long seal life. In practice the 875.5 N rating converts to about 89 kgf, so plan on lifting roughly 45 kg vertically for a 2:1 margin. Note this model is discontinued: the current-production replacement is the ASE50X20, and buyers should confirm ISO 21287 mounting dimensions before swapping.
Airtac ASP Single Acting Guided Compact Cylinder ASP50X20S Technical Specifications
| Model | Airtac ASP Single Acting Guided Compact Cylinder ASP50X20S |
|---|---|
| Series | ASP DIN compact cylinder (discontinued) |
| Replacement | ASE50X20S |
| 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 bumper (both ends) |
| Max standard stroke | Up to 25 mm |
Specifications follow the official AirTAC ACP datasheet (now discontinued). The ASE50X20S (ISO 21287) carries the same bore/stroke/force class; confirm mounting-interface dimensions against the ACE datasheet before installation. Rod type: female thread (blank) or male thread (B). Thread options: PT (blank) / G.
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.
Model Code: Airtac ASP Single Acting Guided Compact Cylinder ASP50X20S
| ASP | DIN compact cylinder (single-acting push, spring-return, discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×20 | Stroke length in mm. |
| S | Optional built-in magnet for sensor position sensing (omit for no magnet). |
| B | Rod type: B = male thread; blank = female thread. |
Replacement mapping (swap P for E): ACP→ACE, ASP→ASE, ATP→ATE, ACPD→ACED, ACPJ→ACEJ. ACP-family: ACP (double acting), ASP / ATP (single acting push / pull), ACPD (double rod), ACPJ (adjustable stroke).
Where the Airtac ASP Single Acting Guided Compact Cylinder ASP50X20S Is Used
Carton ejector on a case packer
A short 20 mm push kicks a formed carton off the filling station; 875.5 N at 0.5 MPa clears the chute and the spring retracts the rod the moment air is vented.
Bracket clamp in a welding fixture
A single air line clamps a steel bracket against a hard stop; the spring return frees the part instantly on power loss, and the -S magnet signals clamp confirmation via a DMSE switch.
Product pusher on a conveyor line
The rod nudges a 40 kg carton sideways off the belt; with about 45 kg of practical vertical-lift equivalent the bore has margin, and the compact body fits under the side guard.
Replacing the Airtac ASP Single Acting Guided Compact Cylinder ASP50X20S with the ASE50X20S
Size by real force, not bore alone: at 0.5 MPa the 40 mm bore gives 556.8 N and the 63 mm bore gives 1420.5 N, so the 50 mm sits squarely between them at 875.5 N. Because the spring drives the rod home on air loss, this cylinder returns to the retracted position rather than holding a mid-stroke load. This unit already carries the optional -S magnet for CMSE / DMSE switches, and FA/FB flange, LB foot and CA/CB clevis mounts are available. For new projects order the ASE50X20, the current drop-in successor in the same bore, stroke and force class.
Replacement checklist
- ✓ Current-production ACE → ASE50X20S
- ✓ Same bore / stroke / force class
- ✓ Confirm ISO 21287 mounting dimensions
- ✓ Port/thread type (PT / G)
- ✓ Add -S for magnet if you need sensors
Airtac ASP Single Acting Guided Compact Cylinder ASP50X20S FAQ
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. Working pressure is 0.2-1.0 MPa (28-145 psi) with a 1.5 MPa (215 psi) proof rating, air filtered to 40 um, speed 50-500 mm/s and a temperature range of -20 to +70 C. The 50 mm bore takes a 1/8" port and an M10x1.5 female rod thread.
The short-body build saves about 50% of the mounting length of an ISO 15552 profile cylinder, so it suits tight fixtures and guarding. A fixed TPU bumper at each end decelerates the rod. Because this model carries the optional -S magnet, CMSE or DMSE reed and solid-state switches mount directly for position signalling. The model is discontinued, so confirm ISO 21287 dimensions on the ASE50X20 replacement before ordering.
Request a Quote for the ASE50X20S
Send us the quantity and destination. We confirm price, stock and lead time on the ASE50X20S replacement — usually within 7-8 hours.