This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ASE50X25SB — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ASE50X25SB 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 ASP50X25SB
The AirTAC Airtac ASP Single Acting Guided Compact Cylinder ASP50X25SB is a single acting, push (spring return) DIN-standard tight/compact air cylinder with a Ø50mm bore and 25mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ASE50X25SB (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ50 mm
- Stroke25 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- Rod threadM10×1.5
- StatusDiscontinued → ASE50X25SB
About the Airtac ASP Single Acting Guided Compact Cylinder ASP50X25SB
Single acting push cylinder with spring return, the ASP50X25SB extends its 16 mm rod on air and retracts on the spring, so one air line is all the plumbing it needs. 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 moving from just 0.2 MPa. The hard-anodized aluminium body follows the ISO 21287 short format, saving roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it drops into tight welding jigs and press fixtures a full-length body cannot reach. This model is discontinued; the current-production successor is the ASE50X25, so confirm ISO 21287 mounting dimensions before swapping.
The S code on this unit means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clamped straight onto the body for end-of-stroke signalling. The B code gives a male rod thread on the 16 mm rod, and a fixed TPU bumper at each end decelerates the moving parts. For sizing, treat about 525 N (roughly 0.6 of the 0.5 MPa push) as the usable working force, which corresponds to lifting about 45 kg vertically with a 2:1 margin. Speed range is 50-500 mm/s across a 0.2-1.0 MPa (28-145 psi) supply.
Airtac ASP Single Acting Guided Compact Cylinder ASP50X25SB Technical Specifications
| Model | Airtac ASP Single Acting Guided Compact Cylinder ASP50X25SB |
|---|---|
| Series | ASP DIN compact cylinder (discontinued) |
| Replacement | ASE50X25SB |
| Bore size | Ø50 mm |
| Stroke | 25 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 ASE50X25SB (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 ASP50X25SB
| ASP | DIN compact cylinder (single-acting push, spring-return, discontinued). |
|---|---|
| 50 | Bore size in mm. |
| ×25 | 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 ASP50X25SB Is Used
Bench press stamping
The 875.5 N push at 0.5 MPa marks a batch of aluminium brackets or embosses serial numbers on a small bench press, with the spring retracting the tool between hits.
Carton hold-down clamp
On a packaging line the rod clamps a folding carton flap against a fixture for taping; losing air simply releases the clamp, and the -S magnet signals clamp position to the PLC.
Fixture part ejection
In a CNC fixture the 25 mm stroke ejects a finished bushing from its nest at up to 500 mm/s, and the male rod thread accepts a custom ejector pin.
Replacing the Airtac ASP Single Acting Guided Compact Cylinder ASP50X25SB with the ASE50X25SB
At 50 mm bore this sits mid-range: a 40 mm bore pushes 556.8 N at 0.5 MPa if the load is lighter, while a 63 mm bore reaches 1420.5 N when you need more thrust from the same compact footprint. Because the spring always returns the rod to its retracted home position, the cylinder will not hold a mid-stroke position on air loss - pick a double-acting ACE if you need that. This unit already carries the -S magnet and male rod thread; FA/FB flange, LB foot and CA/CB clevis brackets match the ISO 21287 face. Order the ASE50X25 as the current replacement.
Replacement checklist
- ✓ Current-production ACE → ASE50X25SB
- ✓ 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 ASP50X25SB 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. Keep the real working load near 525 N (about 0.6 of the 0.5 MPa figure), which is roughly a 45 kg vertical lift with a 2:1 margin. The cylinder needs at least 0.2 MPa to overcome the spring, runs on 0.2-1.0 MPa (28-145 psi) air filtered to 40 um, and moves at 50-500 mm/s. Proof pressure is 1.5 MPa (215 psi).
This model is no longer in production; the current drop-in is the ASE50X25, which keeps the same 50 mm bore, 25 mm stroke and force class. Confirm the ISO 21287 mounting dimensions before swapping, since the ASP follows the DIN-standard compact format. On this unit the optional -S magnet is fitted, so CMSE or DMSE reed or solid-state switches mount directly on the body; the ASE can be ordered with the same -S code if you need position sensing.
Related AirTAC ACE Cylinders
Request a Quote for the ASE50X25SB
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