This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD40X30 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD40X30 in place of this model. The SAU replacement uses the same profile body, bore, stroke, force and SC-series mounting. It moves to the current CMSG / DMSG / EMSG sensor switches (the SU used CS1-B / DS1-B) and adds the SAUF valve-integrated option.
Airtac SUD Series Double Rod Cylinder SUD40X30
The AirTAC Airtac SUD Series Double Rod Cylinder SUD40X30 is a double-acting profile-type standard cylinder with a Ø40mm bore and 30mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD40X30, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke30 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUD40X30
About the Airtac SUD Series Double Rod Cylinder SUD40X30
The AirTAC SUD40X30 is a double-acting, double-rod profile cylinder with a 40mm bore and 30mm stroke. Because a rod exits both ends on one piston, push and pull force are equal at 528N @0.5 MPa. This discontinued model uses an extruded aluminum barrel and a 1/4" port. The exact drop-in replacement is the SAUD40X30, matching the bore, stroke, force, and mounting.
For buyers, the equal-both-ways force yields a safe working load of about 317N (60% of the 528N @0.5 MPa figure) and a vertical lift capacity of roughly 27kg with a 2:1 margin. The SAUD upgrade switches to current CMSG/DMSG/EMSG sensors, as this non-magnetic SKU lacks a sensor cam and cannot take a switch. Note that air cushions only decelerate the piston; an external rod lock is required to hold loads on air loss.
Airtac SUD Series Double Rod Cylinder SUD40X30 Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD40X30 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD40X30 |
| Bore size | Ø40 mm |
| Stroke | 30 mm |
| Acting type | Double acting |
| Port size | 1/4" |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUD40X30 carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAUD40X30 produces the same force from the same bore — a true drop-in on output. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUD Series Double Rod Cylinder SUD40X30
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×30 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SU-family variants: SUD (double rod), SUJ (adjustable stroke) — each maps to its SAU equivalent (SUD→SAUD, SUJ→SAUJ). The current SAU line adds the SAUF valve-integrated option.
Where the Airtac SUD Series Double Rod Cylinder SUD40X30 Is Used
Dual-Tool Machining
Drives two opposing tools simultaneously from one piston, utilizing the equal both ways 528N force at 0.5 MPa for balanced material removal.
Anti-Rotation Lift
The twin rod design prevents piston rotation during vertical lifting, safely handling a 27kg payload with a 2:1 safety margin.
Symmetrical Transfer
Pushes and pulls a workpiece across a belt with identical 739N force at 0.7 MPa in both directions without requiring a second cylinder.
Replacing the Airtac SUD Series Double Rod Cylinder SUD40X30 with the SAUD40X30
To replace the SUD40X30, order the SAUD40X30 drop-in, which preserves the 40mm bore, 30mm stroke, 528N equal-both-ways force, 1/4" port, and FA/LB mounting. Size both directions by checking neighboring bores if you need more or less force, ensuring the application never requires a larger single-rod push value. Choose a double-rod cylinder when you need anti-rotation stability or need to drive two tools from one piston. Because this SKU has no magnet, it cannot take a switch; the SAUD upgrade uses CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B. For strokes >=300mm, verify the side-load line to prevent guide wear.
Replacement checklist
- ✓ Same bore / stroke → SAUD40X30
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S): sensor family CS1-B → CMSG
- ✓ Mounting reused (FA/FB/CA/CB/LB)
- ✓ Need a built-in valve? → SAUF
Airtac SUD Series Double Rod Cylinder SUD40X30 FAQ
Yes, the SUD40X30 is discontinued. The exact drop-in replacement is the SAUD40X30, which matches the 40mm bore, 30mm stroke, 1/4" port, and FA/LB mounting. The SAUD also offers the SAUF built-in-valve variant the SU line lacked.
Force is equal both ways: 528N @0.5 MPa, 739N @0.7 MPa, and 950N @0.9 MPa. The bore dictates a fixed 1/4" port. A plain cylinder does not hold loads on air loss; the 21mm cushion only decelerates, so use an external rod lock for held loads.
Request a Quote for the SAUD40X30
Send us the quantity and destination. We confirm price, stock and lead time on the SAUD40X30 replacement — usually within 7-8 hours.