This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUD40X175, 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 SUD40X175
The AirTAC Airtac SUD Series Double Rod Cylinder SUD40X175 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 direct replacement is the SAUD40X175, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke175 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUD40X175
- 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 SUD40X175
The AirTAC SUD40X175 is a double-acting profile double-rod cylinder that is officially discontinued. The direct replacement is the SAUD40X175, matching the 40mm bore, 175mm stroke, 1/4 inch port, and FA/LB mounting. Because a rod exits both ends on one piston, the push and pull force is equal both ways at 528N @0.5 MPa, 739N @0.7 MPa, and 950N @0.9 MPa. The extruded aluminum profile barrel is shorter than an ISO 15552 cylinder of the same bore.
This non-magnetic SKU cannot take a sensor and never uses single-rod push values. The back rod provides anti-rotation support and can drive a second tool, while the legacy CS1-B/DS1-B sensors on the SUD line are replaced by current CMSG/DMSG/EMSG sensors on the SAUD. Note that a plain cylinder drifts on air loss; the air cushion only decelerates near stroke end, so use an external rod lock for held loads.
Airtac SUD Series Double Rod Cylinder SUD40X175 Technical Specifications
| Model | Airtac SUD Series Double Rod Cylinder SUD40X175 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUD40X175 |
| 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 SAUD40X175 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 SAUD40X175 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 SUD40X175
| 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 SUD40X175 Is Used
Dual-Tool Machining Station
Uses the back rod to drive a secondary gripper or clamp, maintaining equal both ways force for synchronized part transfer.
Anti-Rotation Transfer Pusher
The double-rod construction prevents piston twisting during rapid horizontal product diversion on packaging lines.
Compact Profile Divertor
Fits into tight machinery spaces where an ISO 15552 cylinder would be too long, delivering 528N @0.5 MPa force.
Replacing the Airtac SUD Series Double Rod Cylinder SUD40X175 with the SAUD40X175
To replace this discontinued SUD40X175, order the SAUD40X175 direct, keeping the 40mm bore, 175mm stroke, M12x1.25 rod thread, and 1/4 inch port. Size both ways by checking neighbor bores while verifying the equal both ways force. Choose a double rod when you need anti-rotation stability or to drive two tools. Mounting is Basic, FA, or LB only (SC series compatibility). This non-magnetic SKU cannot take a switch, but the SAUD uses CMSG/DMSG/EMSG sensors instead of the old CS1-B/DS1-B. For this 175mm stroke (under 300mm), side-load alignment is less critical than on longer strokes, but always guide the load. Remember, air cushions only decelerate; they do not hold loads without live air.
Replacement checklist
- ✓ Same bore / stroke → SAUD40X175
- ✓ 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 SUD40X175 FAQ
Yes, the SUD40X175 is discontinued. The direct replacement is the SAUD40X175, which matches the 40mm bore, 175mm stroke, 1/4 inch port, and FA/LB mounting.
The double-rod design provides equal both ways force of 528N @0.5 MPa, 739N @0.7 MPa, and 950N @0.9 MPa. It operates at 30-800 mm/s, has a 21mm adjustable air cushion, and uses a 1/4 inch port.
Related AirTAC SAU Cylinders
Request a Quote for the SAUD40X175
Send us the quantity and destination. We confirm price, stock and lead time on the SAUD40X175 replacement — usually within 7-8 hours.