This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X175-30S, 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 SUJ40X175-30S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X175-30S 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 SAUJ40X175-30S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke175 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X175-30S
- 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 SUJ40X175-30S
The AirTAC SUJ40X175-30S 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 145-175 mm extend window from the 175 mm nominal maximum. It features a 1/4" port, a Ø16 mm piston rod, and 21 mm adjustable air cushions at each end.
This discontinued SUJ series model is replaced direct by the SAUJ40X175-30S, which retains the exact bore, stroke, force, port, and FA/LB mounting. The upgrade path moves position sensing from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors. Note the stop screw sets the end position but is not a load lock; external rod locks are required for held loads.
Airtac SUJ Adjustable Cylinder SUJ40X175-30S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X175-30S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X175-30S |
| 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 SAUJ40X175-30S 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 SAUJ40X175-30S 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 SUJ40X175-30S
| 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 SUJ40X175-30S Is Used
Variable Pitch Forming
Allows on-site extend stroke tuning down to 145 mm to accommodate different material thicknesses or forming depths without swapping the entire cylinder.
Adjustable Transfer Stops
Provides a field-adjustable hard stop for diverting varied package sizes on a line, trimming the extend stroke by up to 30 mm as needed.
Variable Depth Sealing
Enables precise sealing head depth control for changing carton heights, using the stop screw to set the exact 145-175 mm extend endpoint.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X175-30S with the SAUJ40X175-30S
To replace the discontinued SUJ40X175-30S, specify the direct replacement SAUJ40X175-30S, keeping the 40 mm bore, 175 mm stroke, 30 mm adjust window, 1/4" port, and FA/LB mounting. Select the 30 mm adjust window if your end-position needs on-site tuning between 145 and 175 mm. Because this is an -S model, swap the legacy CS1-B/DS1-B sensors for CMSG/DMSG/EMSG switches on the SAUJ. For strokes of 300 mm or longer, verify side-load limits to prevent guide wear. The external stop sets end position but does not lock the load; use an external rod lock for held loads.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X175-30S
- ✓ 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 SUJ40X175-30S FAQ
Yes, the SUJ40X175-30S is discontinued. The direct replacement is the SAUJ40X175-30S, which matches the 40 mm bore, 175 mm stroke, 30 mm adjust window, 1/4" port, and FA/LB mounting. You must upgrade the position sensing from legacy CS1-B/DS1-B switches to current CMSG/DMSG/EMSG sensors.
The external stop screw offers a 30 mm adjust window, allowing the extend stroke to be trimmed on-site from the 175 mm nominal maximum down to 145 mm. The stop sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X175-30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X175-30S replacement — usually within 7-8 hours.