This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X275-75S, 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 SUJ40X275-75S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X275-75S is a double-acting profile-type standard cylinder with a Ø40mm bore and 275mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X275-75S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke275 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X275-75S
- 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 SUJ40X275-75S
The AirTAC SUJ40X275-75S is a double-acting double-rod adjustable-stroke profile cylinder. An external stop screw lets you trim the extend stroke by up to 75 mm on-site, giving a usable stroke window of 200-275 mm from the 275 mm nominal maximum. This unit includes a piston magnet for position sensing.
This SUJ model is discontinued and the direct replacement is the SAUJ40X275-75S, sharing the same profile body, force, and FA/LB mounting. The SAUJ upgrades to current CMSG/DMSG/EMSG sensors, replacing the legacy CS1-B/DS1-B switches used here. The stop screw sets the end position but is not a load lock; use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ40X275-75S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X275-75S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X275-75S |
| Bore size | Ø40 mm |
| Stroke | 275 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 SAUJ40X275-75S 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 SAUJ40X275-75S 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 SUJ40X275-75S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×275 | 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 SUJ40X275-75S Is Used
Variable Depth Boring
Machine tools needing field stroke tuning to adjust boring depth between 200 and 275 mm without swapping the entire cylinder.
Adjustable Carton Sealing
Packaging lines handling varied box heights, using the 75 mm extend trim to set precise sealing head positions on-site.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X275-75S with the SAUJ40X275-75S
To replace this discontinued SUJ40X275-75S, order the direct replacement SAUJ40X275-75S, which matches the 40 mm bore, 275 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 tuning between 200 and 275 mm. Because this unit has an -S magnet, note the sensor change: the SAUJ uses CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. For this 275 mm stroke, verify side-load limits to prevent rod binding. The stop screw sets end position only; it is not a lock, so add an external rod lock for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X275-75S
- ✓ 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 SUJ40X275-75S FAQ
Yes, the SUJ40X275-75S is discontinued. The direct replacement is the SAUJ40X275-75S, which matches the 40 mm bore, 275 mm stroke, 75 mm adjust window, 1/4" port, and FA/LB mounting. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches on this SUJ model.
The external stop screw allows you to trim the extend stroke by up to 75 mm on-site, yielding a usable stroke window of 200-275 mm. The stop sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X275-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X275-75S replacement — usually within 7-8 hours.