This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUD100X400S, 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 SUD100X400S
The AirTAC Airtac SUD Series Double Rod Cylinder SUD100X400S is a double-acting profile-type standard cylinder with a Ø100mm bore and 400mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUD100X400S, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke400 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUD100X400S
- 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 SUD100X400S
The AirTAC SUD100X400S is a discontinued double-acting double-rod profile cylinder with a 100mm bore and 400mm stroke. A rod exits both ends on one piston, meaning both faces use the rod-side area and push and pull force are equal at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. It is discontinued and the direct replacement is the SAUD100X400S, keeping the same body, bore, stroke, 1/2 inch port, and FA/LB mounting. The SAU replacement uses current CMSG/DMSG/EMSG sensors, whereas this model used legacy CS1-B/DS1-B switches.
Because the second rod acts as an anti-rotation guide and can carry a sensor cam, it is ideal for driving two tools. The 1/2 inch port and 29 mm adjustable air cushion at each end provide smooth deceleration, but a plain cylinder does not hold its load on air loss—the piston drifts and the cushion only decelerates near stroke end, so use an external rod lock for held loads.
Airtac SUD Series Double Rod Cylinder SUD100X400S Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD100X400S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD100X400S |
| Bore size | Ø100 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | 1/2" |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUD100X400S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAUD100X400S 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 SUD100X400S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×400 | 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 SUD100X400S Is Used
Dual-Tool Machining Station
Drives two opposing machining heads simultaneously, utilising the equal push and pull force of 5153 N @0.7 MPa on both faces for balanced material removal.
Anti-Rotation Transfer Gate
Uses the second rod exiting the rear as an anti-rotation guide to keep the 100mm bore transfer gate perfectly aligned without external linear bearings.
Replacing the Airtac SUD Series Double Rod Cylinder SUD100X400S with the SAUD100X400S
To replace the SUD100X400S, order the direct replacement SAUD100X400S, which matches the 100mm bore, 400mm stroke, equal-both-ways force, 1/2 inch port, and FA/LB mounting. When sizing both ways, verify the equal force fits your load: the 80mm neighbour bore provides 2268 N @0.5 MPa, while this 100mm bore gives 3681 N @0.5 MPa. Choose a double rod when you need anti-rotation stability or must drive two tools. For the -S magnet, change legacy CS1-B/DS1-B switches to CMSG/DMSG/EMSG sensors. At 400mm stroke, add external guides to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same bore / stroke → SAUD100X400S
- ✓ 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 SUD100X400S FAQ
Yes, the SUD100X400S is discontinued. The direct replacement is the SAUD100X400S, which keeps the same 100mm bore, 400mm stroke, equal both ways force, 1/2 inch port, and FA/LB mounting. You only need to upgrade the -S magnet sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
Because it is a double-rod cylinder, force is equal both ways at 3681 N @0.5 MPa, 5153 N @0.7 MPa, and 6626 N @0.9 MPa. It uses a 1/2 inch port, has a 25 mm piston rod, and features a 29 mm adjustable air cushion at each end.
Related AirTAC SAU Cylinders
Request a Quote for the SAUD100X400S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUD100X400S replacement — usually within 7-8 hours.