This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD40X300 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD40X300 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 SUD40X300
The AirTAC Airtac SUD Series Double Rod Cylinder SUD40X300 is a double-acting profile-type standard cylinder with a Ø40mm bore and 300mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD40X300, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke300 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUD40X300
About the Airtac SUD Series Double Rod Cylinder SUD40X300
The AirTAC SUD40X300 is a double-acting, double-rod profile cylinder featuring a 40mm bore, 300mm stroke, and an extruded aluminium barrel. Because a rod exits both ends on one piston, both faces use the rod-side area, making push and pull force equal at 528N @0.5 MPa, 739N @0.7 MPa, and 950N @0.9 MPa. This discontinued model used a 16mm rod, M12x1.25 rod thread, and a 1/4" port. The exact drop-in replacement is the SAUD40X300, retaining the same bore, stroke, force, and FA/LB mounting.
The double-rod design provides anti-rotation stability and allows the back rod to drive a second tool simultaneously. For this 300mm stroke, external guides are recommended to prevent rod bending under side loads. Based on the 528N force at 0.5 MPa, the safe working load is roughly 317N, translating to a vertical lift capacity of about 27kg with a 2:1 margin. Note that this non-magnetic SKU cannot take a sensor, and the air cushion only decelerates near stroke end; it will not hold a load on air loss, requiring an external rod lock for vertical holding.
Airtac SUD Series Double Rod Cylinder SUD40X300 Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD40X300 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD40X300 |
| Bore size | Ø40 mm |
| Stroke | 300 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 SAUD40X300 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 SAUD40X300 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 SUD40X300
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×300 | 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 SUD40X300 Is Used
Dual-Tool Transfer
Simultaneously pushes and pulls two separate workpieces on a conveyor line using both rod ends, ensuring perfectly synchronized timing without adding a second cylinder.
Anti-Rotation Gripper
Powers a precision parts gripper that requires high torsional resistance, using the double-rod geometry to prevent jaw rotation during the 300mm travel.
Balanced Vertical Lift
Lifts light fixtures or product trays vertically with equal force both ways, keeping the load stable and guided through the full extension and retraction cycle.
Replacing the Airtac SUD Series Double Rod Cylinder SUD40X300 with the SAUD40X300
To replace the discontinued SUD40X300, select the drop-in SAUD40X300, which matches the 40mm bore, 300mm stroke, 1/4" port, and FA/LB mounting. When sizing both ways, verify the equal both-ways force fits your application: this 40mm bore delivers 528N @0.5 MPa, while the neighbouring 32mm bore provides 345N and the 50mm bore provides 825N. A double rod is right when you need anti-rotation resistance or want to drive two tools from one piston. Because this SKU lacks a magnet, it cannot take a sensor; the SAUD upgrade switches to current CMSG/DMSG/EMSG sensors. For this 300mm stroke, add external guides to manage side-load and rod-bending risks.
Replacement checklist
- ✓ Same bore / stroke → SAUD40X300
- ✓ 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 SUD40X300 FAQ
Yes, the AirTAC SUD40X300 is discontinued. The exact drop-in replacement is the SAUD40X300, which shares the same 40mm bore, 300mm stroke, equal both-ways force, 1/4" port, and FA/LB mounting.
Because it is a double-rod cylinder, force is equal both ways: 528N @0.5 MPa, 739N @0.7 MPa, and 950N @0.9 MPa. The operating speed ranges from 30-800 mm/s, and it uses a 1/4" port.
Related AirTAC SAU Cylinders
Request a Quote for the SAUD40X300
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