This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is ATE40X20SB — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the ATE40X20SB 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 ATP40X20SB
The AirTAC Airtac ATP Single Acting Port Compact Cylinder ATP40X20SB 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 ATE40X20SB (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 → ATE40X20SB
- 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 ATP40X20SB
A single acting pull cylinder with spring return, the ATP40X20SB keeps its 40 mm bore rod extended by the spring and retracts it with air, needing only 0.2 MPa to overcome the spring. At 0.5 MPa it delivers 500.3 N of pull net of the spring, rising to 729 N at 0.7 MPa. The B code gives a male rod thread and the S code fits the optional magnet, so CMSE or DMSE switches can be mounted for end-of-stroke sensing. This model is discontinued; the current-production replacement is the ATE40X20.
The short ISO 21287 body saves roughly 50% of the mounting length of an ISO 15552 profile cylinder, which is why it slots into tight fixtures and guarding. For sizing, treat about 300 N (0.6 of the 0.5 MPa rating) as the usable pull, and expect it to lift roughly 25 kg vertically with a 2:1 margin. A fixed TPU bumper sits at both ends, the hard-anodized aluminium body carries a 1/8" port, and the S45C hard-chrome rod runs at 50-500 mm/s.
Airtac ATP Single Acting Port Compact Cylinder ATP40X20SB Technical Specifications
| Model | Airtac ATP Single Acting Port Compact Cylinder ATP40X20SB |
|---|---|
| Series | ATP DIN compact cylinder (discontinued) |
| Replacement | ATE40X20SB |
| 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 ATE40X20SB (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 ATP40X20SB
| 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 ATP40X20SB Is Used
Spring-extended clamp on a CNC fixture
The spring holds the clamp closed over the 20 mm stroke while air retracts it for part changeover, so a dropped air line leaves the workpiece clamped.
Fail-safe gate return on a packaging line
A 500.3 N pull at 0.5 MPa retracts a diverting gate when air is applied; on air loss the spring swings it back to the extended home position.
Position-verified lift check in an assembly cell
With the -S magnet and a DMSE switch, the PLC confirms the 25 kg-class vertical lift has retracted before the next station indexes.
Replacing the Airtac ATP Single Acting Port Compact Cylinder ATP40X20SB with the ATE40X20SB
At 0.5 MPa this bore pulls 500.3 N net of the spring; step down to a 32 mm bore (296 N) for lighter clamping or up to a 50 mm bore (775 N) if the load grows. The spring returns the rod to its extended home on air loss and will not hold a mid-stroke position, so add an external stop if you need one. Mount with FA/FB flange, LB foot or CA/CB clevis brackets, and keep the -S magnet in the code if CMSE / DMSE switches are planned. Before ordering, confirm the ATE40X20 replacement matches your ISO 21287 mounting dimensions.
Replacement checklist
- ✓ Current-production ACE → ATE40X20SB
- ✓ 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 ATP40X20SB FAQ
Pull is 500.3 N at 0.5 MPa and 729 N at 0.7 MPa, both already net of the return spring. Air retracts the rod while the spring extends it, so at least 0.2 MPa is needed to move the piston. Plan on about 300 N of real work at 0.5 MPa, which suits a vertical lift of roughly 25 kg with a 2:1 margin. Operating range is 0.2-1.0 MPa (28-145 psi) with 1.5 MPa (215 psi) proof pressure, and speed runs 50-500 mm/s.
Order the ATE40X20, the current-production ISO 21287 successor: swap the P for an E and you get the same 40 mm bore, 20 mm stroke and force class. Confirm the ISO 21287 mounting dimensions against your fixture before swapping, and remember the male rod thread and the -S magnet on this unit must be specified on the new code as well.
Related AirTAC ACE Cylinders
Request a Quote for the ATE40X20SB
Send us the quantity and destination. We confirm price, stock and lead time on the ATE40X20SB replacement — usually within 7-8 hours.