This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X175-30, 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 SUJ40X175-30
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X175-30 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 SAUJ40X175-30, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke175 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X175-30
- 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 SUJ40X175-30
The AirTAC SUJ40X175-30 is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 30 mm on-site, giving a usable extend range of 145-175 mm from the 175 mm nominal maximum. This SUJ model is discontinued; the direct replacement is the SAUJ40X175-30, matching the bore, stroke, force, port, and FA/LB mounting.
Because the stop screw only sets the end position, it is not a load lock—a plain cylinder drifts on air loss, so use an external rod lock for held loads. This non-magnet SKU cannot take a sensor. The SAUJ upgrade switches to current CMSG/DMSG/EMSG sensors (this legacy unit used CS1-B/DS1-B).
Airtac SUJ Adjustable Cylinder SUJ40X175-30 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X175-30 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X175-30 |
| 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 SAUJ40X175-30 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 SAUJ40X175-30 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 SUJ40X175-30
| 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 SUJ40X175-30 Is Used
Adjustable End-Stop Pressing
Dialing in the exact 145-175 mm extend position on-site for light pressing tasks without swapping the entire cylinder body.
Variable Length Diverter
Tuning the extend stroke by up to 30 mm to deflect varying package sizes on a conveyor without re-engineering the station.
Flexible Pallet Stop
Adjusting the external stop screw to accommodate different pallet depths on the fly while using the 528 N pull force for retraction.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X175-30 with the SAUJ40X175-30
To replace the discontinued SUJ40X175-30, order the direct replacement SAUJ40X175-30, which retains the 40 mm bore, 175 mm max stroke, 30 mm adjust window, 1/4" port, and FA/LB mounting. Select the 30 mm adjust window if you need on-site extend tuning between 145-175 mm. Since this is a non-magnet SKU, it cannot take a switch; if you need position sensing on the SAUJ, specify the -S option for CMSG/DMSG/EMSG sensors. For strokes of 300 mm or longer, verify your side-load limits to prevent rod bearing wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X175-30
- ✓ 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 SUJ40X175-30 FAQ
Yes, the SUJ40X175-30 is discontinued. The direct replacement is the SAUJ40X175-30, which matches the 40 mm bore, 175 mm stroke, 30 mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ also uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
The external stop screw allows you to trim the extend stroke by up to 30 mm on-site, yielding a usable extend range of 145-175 mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X175-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X175-30 replacement — usually within 7-8 hours.