This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X175-50S, 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 SUJ40X175-50S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X175-50S 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 SAUJ40X175-50S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke175 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X175-50S
- 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 SUJ40X175-50S
The AirTAC SUJ40X175-50S is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 50 mm on-site, yielding a usable 125-175 mm range from the 175 mm nominal maximum. It features a 1/4" port and M12x1.25 rod thread. This discontinued unit is replaced direct by the SAUJ40X175-50S, sharing the exact bore, stroke, force, and SC-series FA/LB mounting.
The SAUJ upgrade transitions from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors while retaining the compact profile barrel. Note the stop screw sets end position but is not a load lock; external rod locks are needed to hold loads on air loss.
Airtac SUJ Adjustable Cylinder SUJ40X175-50S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X175-50S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X175-50S |
| 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 SAUJ40X175-50S 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 SAUJ40X175-50S 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 SUJ40X175-50S
| 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 SUJ40X175-50S Is Used
Variable Depth Forming
Adjusting the extend stroke on-site to press parts of varying heights without swapping the entire cylinder assembly.
Variable Length Diverter
Tuning the extend stop to deflect different package widths on a conveyor line precisely at the required distance.
Adjustable Height Stops
Fine-tuning the extend end position to act as a physical stop for varying pallet heights in a packaging cell.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X175-50S with the SAUJ40X175-50S
To replace the discontinued SUJ40X175-50S, specify the direct replacement SAUJ40X175-50S, which preserves the 40 mm bore, 175 mm stroke, 50 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 50 mm adjust window when you need on-site extend flexibility from 125 to 175 mm. Because this model has the -S magnet, swap legacy CS1-B/DS1-B sensors for CMSG/DMSG/EMSG switches. For this 175 mm stroke, verify side-load alignment to prevent rod seal wear. The stop screw sets end position only; use an external rod lock for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X175-50S
- ✓ 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 SUJ40X175-50S FAQ
Yes, the SUJ40X175-50S is discontinued. The direct replacement is the SAUJ40X175-50S, offering the same 40 mm bore, 175 mm stroke, 50 mm adjust window, 1/4" port, and FA/LB mounting. You will need to upgrade the piston magnet switches from legacy CS1-B/DS1-B to the current CMSG/DMSG/EMSG sensors.
The external stop screw provides a 50 mm adjust window, allowing you to shorten the 175 mm nominal extend stroke down to 125 mm on-site. The stop sets end position only and does not lock the load.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X175-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X175-50S replacement — usually within 7-8 hours.