This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X225-30S, 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 SUJ40X225-30S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X225-30S is a double-acting profile-type standard cylinder with a Ø40mm bore and 225mm stroke, 1/4" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ40X225-30S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke225 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X225-30S
- 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 SUJ40X225-30S
The AirTAC SUJ40X225-30S 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, yielding a usable 195-225 mm extend window from the 225 mm nominal maximum. The stop screw sets the end position but is not a load lock.
This SUJ40X225-30S unit is discontinued and drops in directly with the SAUJ40X225-30S, which preserves the 40 mm bore, 225 mm stroke, 30 mm adjust window, force, and FA/LB mounting. The replacement migrates from legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches.
Airtac SUJ Adjustable Cylinder SUJ40X225-30S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X225-30S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X225-30S |
| Bore size | Ø40 mm |
| Stroke | 225 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 SAUJ40X225-30S 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 SAUJ40X225-30S 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 SUJ40X225-30S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×225 | 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 SUJ40X225-30S Is Used
Variable Length Cutting
Trimming the extend stroke by up to 30 mm on-site allows a single cylinder to push a cutting blade for multiple material lengths without machining new hard stops.
Adjustable Forming Stops
Sheet metal bending lines use the 195-225 mm extend window to dial in precise bend depths on-site, accommodating different material thicknesses quickly.
Variable Position Pushers
Conveyor diverter arms tune their reach by up to 30 mm to handle varying package sizes, ensuring positive contact without repositioning the entire actuator.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X225-30S with the SAUJ40X225-30S
To replace the discontinued SUJ40X225-30S, specify the direct replacement SAUJ40X225-30S, which retains the 40 mm bore, 225 mm nominal stroke, 30 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 30 mm adjust window if you need field tuning of the extend stroke; the external stop sets end position but is not a lock, so use an external rod lock for held loads. Because this unit has the -S magnet, upgrade your legacy CS1-B/DS1-B switches to CMSG/DMSG/EMSG sensors. At 225 mm stroke, verify side-load alignment to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X225-30S
- ✓ 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 SUJ40X225-30S FAQ
Yes, the SUJ40X225-30S is discontinued. The direct replacement is the SAUJ40X225-30S, which matches the 40 mm bore, 225 mm stroke, 30 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 trims the extend stroke by up to 30 mm on-site, giving a usable 195-225 mm extend window from the 225 mm nominal maximum. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X225-30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X225-30S replacement — usually within 7-8 hours.