This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUD40X75, with the same bore, stroke, output force, port and mounting, so it fits the same application. 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 SUD40X75
The AirTAC Airtac SUD Series Double Rod Cylinder SUD40X75 is a double-acting profile-type standard cylinder with a Ø40mm bore and 75mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUD40X75, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke75 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUD40X75
- 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 SUD Series Double Rod Cylinder SUD40X75
The AirTAC SUD40X75 is a double-acting, double-rod profile cylinder featuring a 40mm bore and 75mm stroke. Because a rod exits both ends on one piston, both faces use the rod-side area, making push and pull force equal both ways (528N at 0.5MPa). This extruded aluminium profile barrel is more compact than an ISO 15552 cylinder of the same bore. This SUD40X75 model is discontinued; the direct replacement is the SAUD40X75, retaining the 1/4 inch port, M12x1.25 rod thread, and FA/LB mounting.
A key benefit of the double-rod design is anti-rotation, while the back rod can simultaneously drive a second tool. Without a magnetic piston, this SKU cannot take a switch. Note that the air cushion only decelerates near stroke end; an external rod lock is required to hold loads on air loss.
Airtac SUD Series Double Rod Cylinder SUD40X75 Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD40X75 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD40X75 |
| Bore size | Ø40 mm |
| Stroke | 75 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 SAUD40X75 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 SAUD40X75 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUD Series Double Rod Cylinder SUD40X75
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 SUD40X75 Is Used
Dual-Tool Machining Station
Drives two opposing machining heads simultaneously from one piston, ensuring perfectly synchronized clamping and milling via its equal both ways force.
Anti-Rotation Transfer Gate
Uses the twin-rod geometry to prevent mechanical twist during rapid part diversion on a packaging line, maintaining strict lateral alignment.
Compact Vertical Lift
Lifts shallow pallets in tight clearance cells where a standard cylinder is too long, providing a safe 27kg vertical lift capacity at 0.5MPa.
Replacing the Airtac SUD Series Double Rod Cylinder SUD40X75 with the SAUD40X75
To replace the discontinued SUD40X75, order the SAUD40X75 direct, which matches the 40mm bore, 75mm stroke, 528N equal-both-ways force, and 1/4 inch port. When sizing both ways, verify if neighbouring bores (32mm or 50mm) meet the 528N requirement at 0.5MPa. Choose a double-rod cylinder when you need anti-rotation or must drive two tools from one piston. Mounting is limited to Basic, FA, and LB (SC-series compatible only). Because this SKU lacks a magnet, it cannot take sensors, but upgrading to the SAUD requires changing legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors. For strokes of 300mm or longer, carefully manage side-load alignment to prevent guide wear.
Replacement checklist
- ✓ Same bore / stroke → SAUD40X75
- ✓ 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 SUD40X75 FAQ
Yes, the SUD40X75 is discontinued. The direct replacement is the SAUD40X75, which matches the 40mm bore, 75mm stroke, 1/4 inch port, and FA/LB mounting. You will need to upgrade any legacy sensors to the current CMSG/DMSG/EMSG series.
Because it is a double-rod cylinder, force is equal both ways: 528N at 0.5MPa, 739N at 0.7MPa, and 950N at 0.9MPa. It operates at 30-800mm/s, uses a 1/4 inch port, and features 21mm adjustable air cushions at each end.
Request a Quote for the SAUD40X75
Send us the quantity and destination. We confirm price, stock and lead time on the SAUD40X75 replacement — usually within 7-8 hours.