This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ATE20X5S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ATE20X5S 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.

The AirTAC Airtac ATP Single Acting Port Compact Cylinder ATP20X5S is a single acting, pull (spring return) DIN-standard tight/compact air cylinder with a Ø20mm bore and 5mm stroke, M5×0.8 air ports and a hard-anodized aluminium body. This model is discontinued — the current-production replacement is the ATE20X5S (ISO 21287 ACE), in the same bore, stroke and force class.
Single acting pull cylinder with spring return (discontinued): in the ATP20X5S a spring extends the 10 mm rod and compressed air retracts it, so the unit rests normally extended and fails to the extended position when air is lost. Net pull force is 88.1 N at 0.5 MPa and 135.2 N at 0.7 MPa, already after the spring is overcome, and at least 0.2 MPa (28-145 psi working band) is needed to move the rod. The S code means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be clipped on for end-of-stroke sensing.
The short ISO 21287 class body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into tight fixture plates and sliding guards. A hard-anodized aluminium body carries an S45C hard-chrome rod, fixed TPU bumpers decelerate both ends, and the female M6x1.0 rod thread with M5x0.8 PT port keeps plumbing simple. Plan on roughly 53 N of real work at 0.5 MPa, which lifts about 4 kg vertically with a 2:1 margin. This model is discontinued; the current-production drop-in is the ATE20X5, so confirm ISO 21287 mounting dimensions before swapping.
| Model | Airtac ATP Single Acting Port Compact Cylinder ATP20X5S |
|---|---|
| Series | ATP DIN compact cylinder (discontinued) |
| Replacement | ATE20X5S |
| Bore size | Ø20 mm |
| Stroke | 5 mm |
| Acting type | Single acting, pull (spring return) |
| Port size | M5×0.8 |
| Rod thread | M6×1.0 |
| 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 ATE20X5S (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.
| Pressure | Pull force (spring return) |
|---|---|
| 0.5 MPa | 88.1 N |
| 0.7 MPa | 135.2 N |
Single-acting pull: the spring extends the rod; air retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa.
| ATP | DIN compact cylinder (single-acting pull, spring-return, discontinued). |
|---|---|
| 20 | Bore size in mm. |
| ×5 | 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).
On a small milling fixture the spring keeps the clamp arm retracted-open at rest and the 88.1 N pull at 0.5 MPa draws the plunger back over the 5 mm stroke when air is applied.
Because the -S magnet is fitted, a DMSE switch on the 20 mm bore body confirms on a PLC that a 5 mm gauge slide has been pulled home before the inspection cycle starts.
In a carton sealing station the spring lifts a light hold-down pad about 4 kg vertically out of the way, then air retracts it onto the box flap at up to 500 mm/s.
Size the job both ways: the bore 16 ATP16X5S pulls 53.3 N at 0.5 MPa if your clamp or eject needs less, while the bore 25 ATP25X5S reaches 170.9 N at 0.5 MPa if 88.1 N is marginal. Remember the spring only returns the rod to its extended home position - it does not hold a mid-stroke position under load. Match the mounting from the FA/FB flange, LB foot and CA/CB clevis family, and order CMSE or DMSE switches only because this S-coded unit carries the optional -S magnet. For new builds, specify the ATE20X5 instead: the ATP line is discontinued and the ATE is the current ISO 21287 successor in the same force class.
Replacement checklist
Net of the return spring, the ATP20X5S pulls 88.1 N at 0.5 MPa and 135.2 N at 0.7 MPa. Working pressure is 0.2-1.0 MPa (28-145 psi) with 1.5 MPa (215 psi) proof, so at least 0.2 MPa is required to beat the spring. Air must be filtered to 40 um, speed range is 50-500 mm/s, temperature -20 to +70 C, and the M5x0.8 PT port suits the 20 mm bore.
Order the ATE20X5, the current-production ISO 21287 successor made by swapping the P for an E. It matches the same 20 mm bore, 5 mm stroke and force class, but because the ATP is DIN-standard you should confirm the ISO 21287 mounting dimensions and the FA/FB, LB or CA/CB bracket fit before swapping it into an existing fixture.
Send us the quantity and destination. We confirm price, stock and lead time on the ATE20X5S replacement — usually within 7-8 hours.