This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ATE40X20B — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ATE40X20B 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 ATP40X20B
The AirTAC Airtac ATP Single Acting Port Compact Cylinder ATP40X20B 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 ATE40X20B (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 → ATE40X20B
- 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 ATP40X20B
A single acting pull cylinder with spring return, the ATP40X20B keeps its 12 mm rod extended by an internal spring and retracts it with compressed 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. The 40 mm bore works from 0.2 MPa up to 1.0 MPa (28-145 psi) with a 1.5 MPa (215 psi) proof rating, and the 1/8" port feeds a 20 mm stroke at 50-500 mm/s. This model is discontinued; the current-production replacement is the ATE40X20.
The short ISO 21287-style body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, so it slots into tight welding jigs and machine guards where a full-length body cannot. The male rod thread (the B code) bolts straight to standard rod knuckles, and the fixed TPU bumper at each end absorbs end-of-stroke shock. Plan on about 300 N of usable pull at 0.5 MPa rather than the full rating, which lifts roughly 15 kg vertically with a 2:1 margin. No magnet is fitted on this code, so position switches cannot be mounted; order the -S version if you need CMSE / DMSE sensing.
Airtac ATP Single Acting Port Compact Cylinder ATP40X20B Technical Specifications
| Model | Airtac ATP Single Acting Port Compact Cylinder ATP40X20B |
|---|---|
| Series | ATP DIN compact cylinder (discontinued) |
| Replacement | ATE40X20B |
| 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 ATE40X20B (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 ATP40X20B
| 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 ATP40X20B Is Used
Spring-extended clamp on a press fixture
The spring holds the clamp jaw open at rest and the 500.3 N pull at 0.5 MPa retracts it to grip a steel bracket during a drilling cycle, releasing automatically if air is lost.
Lift-and-clear gate on a packaging line
A 20 mm stroke is enough to raise a lightweight guide gate about 15 kg equivalent clear of a carton path, and the spring pushes the gate back down the moment air pressure drops.
Retracting a punch holder in a small jig
The male rod thread bolts directly to a knuckle, letting the 729.0 N pull at 0.7 MPa withdraw a punch holder between cycles on a compact bench-top fixture.
Replacing the Airtac ATP Single Acting Port Compact Cylinder ATP40X20B with the ATE40X20B
Size by pull force, not push: at 0.5 MPa this bore pulls 500.3 N net of the spring, while the 32 mm version manages 296.0 N and the 50 mm version 775.0 N. If your clamp needs more than about 300 N of real work, step up to the 50 mm bore. The spring returns the rod to its extended home position on air loss and will not hold a mid-stroke position, so add an external stop if intermediate holding matters. Choose FA/FB flange, LB foot or CA/CB clevis mounting to match your fixture, and remember the male rod thread on this B code. For new builds, specify the ATE40X20 instead, since this ATP model is discontinued.
Replacement checklist
- ✓ Current-production ACE → ATE40X20B
- ✓ 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 ATP40X20B FAQ
It is a single acting pull cylinder: the spring extends the rod and air retracts it. Pull force is 500.3 N at 0.5 MPa and 729.0 N at 0.7 MPa, both already net of the return spring. Working pressure 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, and the 1/8" port needs air filtered to 40 um. On air loss the spring returns the rod to its extended home position; it does not hold a mid-stroke position.
Order the ATE40X20, the current-production ISO 21287 replacement: swap the P for an E and you get the same 40 mm bore, 20 mm stroke and force class in a short compact body. Before swapping, confirm the ISO 21287 mounting dimensions against your fixture, since the ATP follows the older DIN-standard layout. Also note this code has no magnet; if you need CMSE / DMSE switch sensing, order the -S magnet option.
Request a Quote for the ATE40X20B
Send us the quantity and destination. We confirm price, stock and lead time on the ATE40X20B replacement — usually within 7-8 hours.