This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ATE40X20S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ATE40X20S 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 ATP40X20S
The AirTAC Airtac ATP Single Acting Port Compact Cylinder ATP40X20S 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 ATE40X20S (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 → ATE40X20S
- 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 ATP40X20S
A single acting pull cylinder with spring return, the ATP40X20S keeps its 12 mm rod extended by a spring and retracts it with air, delivering 500.3 N of pull at 0.5 MPa (729.0 N at 0.7 MPa), both figures already net of the spring. It needs at least 0.2 MPa to overcome the spring, runs on air filtered to 40 um at 0.2-1.0 MPa (28-145 psi), and moves at 50-500 mm/s. This model is discontinued; the current-production replacement is the ATE40X20, which matches the same bore, stroke and force class.
The short ISO 21287 body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight fixtures and guarding where a full-length body will not fit. The S code means the optional -S magnet is fitted, so CMSE or DMSE reed and solid-state switches can be mounted for end-of-stroke signals. A fixed TPU bumper at each end decelerates the rod, and on air loss the spring returns it to the extended home position rather than holding a mid-stroke point. For sizing, expect about 300 N of real work at 0.5 MPa, which lifts roughly 25 kg vertically with a 2:1 margin.
Airtac ATP Single Acting Port Compact Cylinder ATP40X20S Technical Specifications
| Model | Airtac ATP Single Acting Port Compact Cylinder ATP40X20S |
|---|---|
| Series | ATP DIN compact cylinder (discontinued) |
| Replacement | ATE40X20S |
| 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 ATE40X20S (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 ATP40X20S
| 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 ATP40X20S Is Used
Spring-extended clamp on a CNC fixture
The spring holds the clamp closed on aluminium housings during milling; 0.5 MPa air pulls it open for loading, and a power cut leaves the part safely clamped.
Position-flagged gate on a packaging line
With the -S magnet fitted, a DMSE switch confirms the 20 mm retract of a small diverting gate between carton lanes, cycling at up to 500 mm/s.
Normally-open lift pin in an assembly jig
The rod stays extended to locate a bracket; air retracts the pin so the operator can drop the part in, then the spring re-extends it for the next cycle.
Replacing the Airtac ATP Single Acting Port Compact Cylinder ATP40X20S with the ATE40X20S
At 0.5 MPa this 40 mm bore pulls 500.3 N net of the spring. Step down to a 32 mm bore (296.0 N) for lighter clamping, or up to a 50 mm bore (775.0 N) when the load needs more margin. Remember the spring only returns the rod to its extended home position, so it will not hold a mid-stroke position under load. Female M8x1.25 rod thread and 1/8" PT port suit standard fittings; FA/FB flange, LB foot and CA/CB clevis mounts bolt to the ISO 21287 face. Since the ATP40X20S is discontinued, order the ATE40X20 as the drop-in successor and confirm the ISO 21287 mounting dimensions before swapping.
Replacement checklist
- ✓ Current-production ACE → ATE40X20S
- ✓ 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 ATP40X20S FAQ
At 0.5 MPa the net pull is 500.3 N, rising to 729.0 N at 0.7 MPa; both figures are already net of the return spring, and at least 0.2 MPa is needed to move the rod against it. Plan on about 300 N of real work at 0.5 MPa, which lifts roughly 25 kg vertically with a 2:1 margin. Operating range is 0.2-1.0 MPa (28-145 psi), proof pressure 1.5 MPa (215 psi), speed 50-500 mm/s, temperature -20 to +70 C, air filtered to 40 um.
Order the ATE40X20: swap the P for an E and you get the current-production ISO 21287 compact cylinder in the same 40 mm bore, 20 mm stroke and force class. The short body still saves about 50% of the mounting length of an ISO 15552 profile cylinder, and FA/FB flange, LB foot and CA/CB clevis brackets bolt to the same face. Confirm the ISO 21287 mounting dimensions against your fixture before the swap, and check the datasheet for any dimension not listed here.
Request a Quote for the ATE40X20S
Send us the quantity and destination. We confirm price, stock and lead time on the ATE40X20S replacement — usually within 7-8 hours.