This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X175-40S, 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 SUJ40X175-40S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X175-40S 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 SAUJ40X175-40S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke175 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X175-40S
- 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 SUJ40X175-40S
The AirTAC SUJ40X175-40S is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 40 mm on-site, yielding a usable 135-175 mm stroke from the 175 mm nominal maximum. This model is discontinued; the direct replacement is the SAUJ40X175-40S, sharing the same bore, stroke, force, and FA/LB mounting.
The SAUJ successor uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches fitted to this -S magnet model. 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.
Airtac SUJ Adjustable Cylinder SUJ40X175-40S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X175-40S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X175-40S |
| 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 SAUJ40X175-40S 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 SAUJ40X175-40S 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 SUJ40X175-40S
| 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 SUJ40X175-40S Is Used
Variable Pitch Assembly
Trimming the extend stroke by up to 40 mm on-site allows operators to vary the pitch of pressed components without swapping out the entire cylinder body.
Adjustable Transfer Stops
Field-tuning the 135-175 mm extend window lets a single 40 mm bore cylinder accommodate changing package sizes on a conveyor line.
Dynamic Clamping Fixtures
The external stop screw provides precise end-position adjustment for clamping parts of varying widths, preventing over-travel without needing spacers.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X175-40S with the SAUJ40X175-40S
To replace the discontinued SUJ40X175-40S, order the direct replacement SAUJ40X175-40S, which preserves the 40 mm bore, 175 mm nominal stroke, 40 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 40 mm adjust window if your fixture needs field tuning between 135 and 175 mm. Retain your FA or LB mounts, but note the -S sensor change: legacy CS1-B/DS1-B switches are superseded by CMSG/DMSG/EMSG sensors on the SAUJ. Because the 175 mm stroke exceeds 300 mm, verify side-load alignment to prevent guide wear. The external stop sets end position only; it is not a lock, so add an external rod lock for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X175-40S
- ✓ 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 SUJ40X175-40S FAQ
Yes, the SUJ40X175-40S is discontinued. The direct replacement is the SAUJ40X175-40S, which matches the 40 mm bore, 175 mm stroke, 40 mm adjust window, 1/4" port, and FA/LB mounting. You must upgrade the -S magnet sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
The external stop screw window is 40 mm, allowing you to shorten the 175 mm nominal extend stroke down to 135 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X175-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X175-40S replacement — usually within 7-8 hours.