This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUD40X175S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUD40X175S 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 SUD40X175S
The AirTAC Airtac SUD Series Double Rod Cylinder SUD40X175S is a double-acting profile-type standard cylinder with a Ø40mm bore and 175mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAUD40X175S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke175 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUD40X175S
About the Airtac SUD Series Double Rod Cylinder SUD40X175S
The AirTAC SUD40X175S is a double-acting, double-rod profile cylinder featuring a 40mm bore, 175mm stroke, and a 1/4 inch port. 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 model is discontinued; the exact drop-in replacement is the SAUD40X175S, which matches the bore, stroke, force, and FA/LB mounting. The SAU upgrade uses current CMSG/DMSG/EMSG sensors and offers the SAUF built-in-valve variant the SU line lacked.
The double-rod design provides anti-rotation stability and allows the back rod to carry a sensor cam, driving two tools simultaneously from one compact aluminium profile barrel that is shorter than an ISO 15552 cylinder of the same bore. For this SUD40X175S, the computed safe working load is approximately 317N (about 60% of the 528N @0.5 MPa figure), yielding a vertical lift capacity of roughly 27kg with a 2:1 margin. Note that a plain cylinder does not hold its load on air loss; the 21mm adjustable air cushion only decelerates near stroke end, so an external rod lock is required for held loads.
Airtac SUD Series Double Rod Cylinder SUD40X175S Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD40X175S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD40X175S |
| Bore size | Ø40 mm |
| Stroke | 175 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 SAUD40X175S 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 SAUD40X175S 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 SUD40X175S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×175 | 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 SUD40X175S Is Used
Dual-Tool Transfer
Drives two opposing pickers from one compact profile body, using the equal both-ways force to push and pull identical parts simultaneously.
Anti-Rotation Diverter
The twin rods prevent piston twist during high-speed sorting, keeping the diverter arm perfectly aligned across the 175mm stroke.
Cam-Driven Sensing
Uses the rear extending rod to carry a sensor cam, providing a clean feedback signal without consuming extra machine footprint.
Replacing the Airtac SUD Series Double Rod Cylinder SUD40X175S with the SAUD40X175S
To replace the discontinued SUD40X175S, use the SAUD40X175S drop-in, which matches the 40mm bore, 175mm stroke, 528N/739N/950N equal-both-ways force, 1/4 inch port, and FA/LB mounting. When sizing both ways, verify force against neighbouring bores: the 32mm bore yields 345/483/621N, while the 50mm bore yields 825/1154/1484N. A double rod is right when you need anti-rotation stability or want to drive two tools from one body. Because this unit has the -S magnet, swap the legacy CS1-B/DS1-B switches for CMSG/DMSG/EMSG sensors on the SAU. For this 175mm stroke, which is below the 300mm threshold, side-load moments are minimal, but always ensure the FA/LB mounting is square. Mounting compatibility is with the AirTAC SC series only.
Replacement checklist
- ✓ Same bore / stroke → SAUD40X175S
- ✓ 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 SUD40X175S FAQ
Yes, the SUD40X175S is discontinued. The exact drop-in replacement is the SAUD40X175S, which matches the 40mm bore, 175mm stroke, 1/4 inch port, and FA/LB mounting. You must swap the legacy CS1-B/DS1-B sensors for current CMSG/DMSG/EMSG switches on the SAU.
Because it is a double-rod cylinder, force is equal both ways at 528N @0.5 MPa, 739N @0.7 MPa, and 950N @0.9 MPa. This yields a safe working load of about 317N and a vertical lift capacity of roughly 27kg with a 2:1 margin.
Related AirTAC SAU Cylinders
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