This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X275-100S, 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 SUJ40X275-100S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X275-100S 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 SAUJ40X275-100S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke275 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X275-100S
- 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 SUJ40X275-100S
The AirTAC SUJ40X275-100S is a double-acting double-rod profile cylinder with a 40 mm bore and 1/4" port, engineered for on-site stroke tuning. An external stop screw lets you trim the extend stroke by up to 100 mm, yielding a usable 175-275 mm extend range from the 275 mm nominal maximum. The stop screw strictly sets the end position and is not a load lock; external rod locks are required for held loads.
This discontinued unit is fully replaced by the direct replacement SAUJ40X275-100S, retaining the exact bore, stroke, force, port, and FA/LB mounting. The upgrade path transitions from legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches. The compact profile barrel is shorter than an ISO 15552 cylinder of the same bore.
Airtac SUJ Adjustable Cylinder SUJ40X275-100S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X275-100S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X275-100S |
| 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 SAUJ40X275-100S 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 SAUJ40X275-100S 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 SUJ40X275-100S
| 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 SUJ40X275-100S Is Used
Variable Push-off Stations
Adjusting the extend stroke on-site by up to 100 mm to push parts of varying widths off a belt without swapping the cylinder.
Prototype Forming Stops
Dialing in the exact 175-275 mm extend end-position during short-run tooling trials before finalizing a fixed stop length.
Adjustable Diverters
Tuning the diverting stroke length on the fly to handle different package sizes entering sorting lanes.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X275-100S with the SAUJ40X275-100S
To replace the discontinued SUJ40X275-100S, order the exact direct replacement SAUJ40X275-100S, which preserves the 40 mm bore, 275 mm nominal stroke, 100 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 100 mm adjust window when you need flexible end-position tuning between 175 mm and 275 mm on-site. Because this is an -S model, you must upgrade your sensing from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches. For this 275 mm stroke, verify side-load limits to prevent rod binding. Remember the external stop sets end position but does not lock the load on air loss.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X275-100S
- ✓ 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 SUJ40X275-100S FAQ
Yes, the SUJ40X275-100S is discontinued. The direct replacement is the SAUJ40X275-100S, sharing the same 40 mm bore, 275 mm stroke, 100 mm adjust window, 1/4" port, and FA/LB mounting. You simply need to upgrade the sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
The external stop screw provides a 100 mm adjust window, allowing you to shorten the extend stroke from the 275 mm nominal maximum down to 175 mm. The stop sets end position only and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X275-100S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X275-100S replacement — usually within 7-8 hours.