This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ASE40X20SB — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ASE40X20SB 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 ASP40X20SB
The AirTAC Airtac ASP Single Acting Guided Compact Cylinder ASP40X20SB is a single acting, push (spring return) DIN-standard tight/compact air cylinder with a Ø40mm bore and 20mm stroke, 1/8" air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ASE40X20SB (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ40 mm
- Stroke20 mm
- Port size1/8"
- Acting typeSingle acting, push (spring return)
- Rod threadM8×1.25
- StatusDiscontinued → ASE40X20SB
About the Airtac ASP Single Acting Guided Compact Cylinder ASP40X20SB
A single acting push cylinder with spring return, the ASP40X20SB extends its 12 mm rod with air and retracts it by spring, delivering 556.8 N of push at 0.5 MPa (808.1 N at 0.7 MPa), already net of the spring. This model is discontinued; the current-production successor is the ASE40X20, which matches the same bore, stroke and force class - confirm the ISO 21287 mounting dimensions before swapping.
The short ISO 21287 body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight jigs, guards and gantries. The 40 mm bore runs from just 0.2 MPa, so a single air line is enough. At 0.5 MPa plan for about 334 N of real work rather than the full rating, which means this unit lifts roughly 17 kg vertically with a 2:1 margin. The S code fits the magnet, so CMSE or DMSE switches can be mounted, and the B code gives a male rod thread with a 1/8" PT port.
Airtac ASP Single Acting Guided Compact Cylinder ASP40X20SB Technical Specifications
| Model | Airtac ASP Single Acting Guided Compact Cylinder ASP40X20SB |
|---|---|
| Series | ASP DIN compact cylinder (discontinued) |
| Replacement | ASE40X20SB |
| Bore size | Ø40 mm |
| Stroke | 20 mm |
| Acting type | Single acting, push (spring return) |
| Port size | 1/8" |
| Rod thread | M8×1.25 |
| 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 ASE40X20SB (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 (Ø40mm)
| Pressure | Push force (spring return) |
|---|---|
| 0.5 MPa | 556.8 N |
| 0.7 MPa | 808.1 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 ASP40X20SB
| ASP | DIN compact cylinder (single-acting push, spring-return, discontinued). |
|---|---|
| 40 | 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 ASP40X20SB Is Used
Bench press clamping
Clamps small aluminium brackets on an assembly bench with 556.8 N at 0.5 MPa; the spring retracts the platen the moment air is cut.
Carton kick-off on a packing line
The 20 mm stroke nudges a folded carton onto a conveyor belt, and the short body fits under a low guard rail where a full-length cylinder cannot.
Presence check in a fixture
With the fitted -S magnet and a DMSE switch, the rod position confirms a steel part is seated before a welding robot starts.
Replacing the Airtac ASP Single Acting Guided Compact Cylinder ASP40X20SB with the ASE40X20SB
Size between bores: a 32 mm bore pushes 352.5 N at 0.5 MPa while this 40 mm bore gives 556.8 N, and stepping up to 50 mm reaches 875.5 N - pick the smallest bore that clears your load with margin. Remember the spring pulls the rod home on air loss, so it will not hold a mid-stroke position. FA/FB flange, LB foot or CA/CB clevis mounting bolts to the same face, and CMSE / DMSE switches work because this model carries the optional -S magnet. Order the ASE40X20 as the current drop-in replacement.
Replacement checklist
- ✓ Current-production ACE → ASE40X20SB
- ✓ 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 ASP40X20SB FAQ
Push is 556.8 N at 0.5 MPa and 808.1 N at 0.7 MPa, both already net of the return spring. Working pressure is 0.2-1.0 MPa (28-145 psi) with 1.5 MPa (215 psi) proof; at least 0.2 MPa is needed to overcome the spring. Speed range is 50-500 mm/s and the 1/8" PT port serves the 40 mm bore.
The ISO 21287 short body cuts about 50% of the mounting length of an ISO 15552 profile cylinder, ideal for tight jigs and gantries. A fixed TPU bumper pads both ends of travel; it does not lock or hold a load, and on air loss the spring simply returns the rod. FA/FB flange, LB foot and CA/CB clevis all bolt to the same face.
Related AirTAC ACE Cylinders
Request a Quote for the ASE40X20SB
Send us the quantity and destination. We confirm price, stock and lead time on the ASE40X20SB replacement — usually within 7-8 hours.