This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X175-75S, 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 SUJ Adjustable Cylinder SUJ40X175-75S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X175-75S 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 SAUJ40X175-75S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke175 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X175-75S
- 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 SUJ Adjustable Cylinder SUJ40X175-75S
The AirTAC SUJ40X175-75S is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 75 mm on-site, yielding a usable 100-175 mm extend range from the 175 mm nominal maximum. It features a 1/4" port, a Ø16 mm rod, and 21 mm adjustable air cushions. This SUJ model is discontinued; the direct replacement is the SAUJ40X175-75S, which retains the same bore, stroke, force, port, and FA/LB mounting.
The stop screw sets the end position but is not a load lock; a plain cylinder drifts on air loss, so use an external rod lock for held loads. Because this unit includes a piston magnet (-S), it used legacy CS1-B/DS1-B switches, whereas the SAUJ replacement upgrades to current CMSG/DMSG/EMSG sensors. The compact extruded aluminum barrel is shorter than an ISO 15552 cylinder of the same bore, making it ideal for tight machinery.
Airtac SUJ Adjustable Cylinder SUJ40X175-75S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X175-75S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X175-75S |
| 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 SAUJ40X175-75S 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 SAUJ40X175-75S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SUJ Adjustable Cylinder SUJ40X175-75S
| 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 SUJ Adjustable Cylinder SUJ40X175-75S Is Used
Variable Pitch Indexing
Adjusting the extend stroke by up to 75 mm on-site allows a single cylinder to drive multiple product pitches without swapping the entire actuator.
Dynamic Reject Push-off
Trimming the extend end position lets operators fine-tune the pusher distance for varying package sizes directly at the conveyor lane.
Carton Flap Folding
Field-tuning the 100-175 mm stroke window ensures precise flap contact across mixed carton heights without repositioning the cylinder mount.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X175-75S with the SAUJ40X175-75S
To replace the discontinued SUJ40X175-75S, order the direct replacement SAUJ40X175-75S, which matches the 40 mm bore, 175 mm stroke, 75 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 75 mm adjust window when you need on-site extend trimming between 100 and 175 mm; the stop screw sets end position but does not lock the load. For the -S magnet version, note the sensor change from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG. Because the 175 mm stroke exceeds 300 mm, verify side-load limits to prevent guide bushing wear. Mounting compatibility is with the AirTAC SC series only.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X175-75S
- ✓ 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 SUJ Adjustable Cylinder SUJ40X175-75S FAQ
Yes, the SUJ40X175-75S is discontinued. The direct replacement is the SAUJ40X175-75S, which matches the 40 mm bore, 175 mm stroke, 75 mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ also offers the SAUF built-in-valve variant the SU line lacked.
The external stop screw window is 75 mm, allowing you to trim the 175 mm nominal extend stroke down to 100 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X175-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X175-75S replacement — usually within 7-8 hours.