This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ATE40X20 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ATE40X20 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 ATP Single Acting Port Compact Cylinder ATP40X20
The AirTAC Airtac ATP Single Acting Port Compact Cylinder ATP40X20 is a single acting, pull (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 ATE40X20 (ISO 21287 ACE), in the same bore, stroke and force class.
- BoreØ40 mm
- Stroke20 mm
- Port size1/8"
- Acting typeSingle acting, pull (spring return)
- Rod threadM8×1.25
- StatusDiscontinued → ATE40X20
- 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 ATP Single Acting Port Compact Cylinder ATP40X20
The ATP40X20 is a single acting pull cylinder with spring return (discontinued): the spring extends the 12 mm rod and compressed air retracts it, so the unit sits normally extended and fails to the extended home position when air is lost. At 0.5 MPa it delivers a net pull of 500.3 N (729 N at 0.7 MPa), already minus the spring force, and it needs at least 0.2 MPa to overcome the spring. Working range is 0.2-1.0 MPa (28-145 psi) with 1.5 MPa (215 psi) proof, running 50-500 mm/s on air filtered to 40 um.
Its ISO 21287 short body saves about 50% of the mounting length of an ISO 15552 profile cylinder, which is why it fits tight jigs and guarding where a full-length body will not. In practice, plan on roughly 300 N of usable pull at 0.5 MPa, and expect it to lift about 25 kg vertically once you keep a 2:1 margin (the raw rating is about 51 kgf). The hard-anodized aluminium body carries a fixed TPU bumper at both ends, the S45C rod is hard-chrome finished, and the female M8x1.25 rod thread is standard. This model is discontinued; the current-production drop-in is the ATE40X20, so confirm ISO 21287 mounting dimensions before swapping.
Airtac ATP Single Acting Port Compact Cylinder ATP40X20 Technical Specifications
| Model | Airtac ATP Single Acting Port Compact Cylinder ATP40X20 |
|---|---|
| Series | ATP DIN compact cylinder (discontinued) |
| Replacement | ATE40X20 |
| Bore size | Ø40 mm |
| Stroke | 20 mm |
| Acting type | Single acting, pull (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 ATE40X20 (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 | Pull force (spring return) |
|---|---|
| 0.5 MPa | 500.3 N |
| 0.7 MPa | 729.0 N |
Single-acting pull: the spring extends the rod; air retracts it. Forces already net the spring; minimum working pressure is 0.2 MPa.
Model Code: Airtac ATP Single Acting Port Compact Cylinder ATP40X20
| ATP | DIN compact cylinder (single-acting pull, 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 ATP Single Acting Port Compact Cylinder ATP40X20 Is Used
Spring-extended part ejector
On a small stamping die, the spring keeps the ejector pin proud between cycles; 500.3 N of air pull at 0.5 MPa retracts the 12 mm rod 20 mm to clear the next blank.
Normally-out guard interlock pin
A sliding machine guard needs a pin that stays extended on air loss. The ATP40X20 fails to extended, and the -S magnet option with a DMSE switch confirms retraction before the press cycle starts.
Retract clamp on a packaging fixture
A carton hold-down must release every cycle. With about 300 N of dependable pull at 0.5 MPa and a 20 mm stroke, the cylinder pulls the clamp arm clear inside a compact fixture body.
Replacing the Airtac ATP Single Acting Port Compact Cylinder ATP40X20 with the ATE40X20
Size against the 0.5 MPa net pull of 500.3 N: the smaller ATP32 bore gives 296.0 N at 0.5 MPa, while the ATP50 steps up to 775.0 N, so pick the next bore up if your clamp or retract load sits near 300 N. Because the spring only returns the rod to its extended home, this cylinder cannot hold a mid-stroke position on air loss. The 20 mm stroke is within the standard range for bore 40, the 1/8" port is fixed by the bore, and FA/FB flange, LB foot or CA/CB clevis mounts bolt to the same face. Order the -S code if you need the optional magnet for CMSE / DMSE switches; without it there is no magnet. For new projects, specify the ATE40X20 instead.
Replacement checklist
- ✓ Current-production ACE → ATE40X20
- ✓ Same bore / stroke / force class
- ✓ Confirm ISO 21287 mounting dimensions
- ✓ Port/thread type (PT / G)
- ✓ Add -S for magnet if you need sensors
Airtac ATP Single Acting Port Compact Cylinder ATP40X20 FAQ
Net of the return spring, the ATP40X20 pulls 500.3 N at 0.5 MPa and 729 N at 0.7 MPa (spring extends, air retracts). Bore 40 mm, stroke 20 mm, rod 12 mm with female M8x1.25 thread, 1/8" port, operating pressure 0.2-1.0 MPa (28-145 psi), proof 1.5 MPa (215 psi), speed 50-500 mm/s, temperature -20 to +70 C, fixed TPU bumpers both ends. It is discontinued; the ATE40X20 is the current replacement.
The ISO 21287 short body cuts roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it suits tight jigs and gantries. Sensors are not automatic: only the -S ordering code adds the optional magnet, which lets CMSE or DMSE switches detect position. Without -S there is no magnet. Before switching to the ATE40X20, confirm the ISO 21287 mounting dimensions.
Request a Quote for the ATE40X20
Send us the quantity and destination. We confirm price, stock and lead time on the ATE40X20 replacement — usually within 7-8 hours.