This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X225-75S, 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 SUJ40X225-75S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X225-75S 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 SAUJ40X225-75S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke225 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X225-75S
- 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 SUJ40X225-75S
The AirTAC SUJ40X225-75S is a double-acting double-rod profile cylinder with a 225 mm nominal stroke and a 1/4" port. An external stop screw lets you trim the extend stroke by up to 75 mm on-site, yielding a usable 150-225 mm window. The stop sets the end position; it is not a load lock, so use an external rod lock for held loads.
This SUJ40X225-75S model is discontinued and the direct replacement is the SAUJ40X225-75S, retaining the same force, 1/4" port, and FA/LB mounting. The SAUJ upgrades to current CMSG/DMSG/EMSG sensors, whereas this unit uses legacy CS1-B/DS1-B switches.
Airtac SUJ Adjustable Cylinder SUJ40X225-75S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X225-75S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X225-75S |
| 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 SAUJ40X225-75S 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 SAUJ40X225-75S 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 SUJ40X225-75S
| 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 SUJ40X225-75S Is Used
Variable Depth Boring
Machine tools needing field stroke tuning to adjust the extend stroke by up to 75 mm for boring different material depths without swapping cylinders.
Adjustable Transfer Pushers
Packaging lines requiring on-site stroke trimming to push varying box sizes, using the external stop screw to set precise 150-225 mm extend endpoints.
Variable Height Diverter Arms
Sortation systems using the adjustable stroke to tune diverter arm extension lengths on-site, accommodating changing product profiles dynamically.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X225-75S with the SAUJ40X225-75S
To replace the discontinued SUJ40X225-75S, order the direct replacement SAUJ40X225-75S which matches the 40 mm bore, 225 mm stroke, 1/4" port, and FA/LB mounting. Choose the 75 mm adjust window if you need to trim the extend stroke on-site between 150 and 225 mm. Because this unit has the -S magnet, upgrade your position sensing from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches. For strokes of 300 mm or longer, verify your side-load limits to prevent excessive guide wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X225-75S
- ✓ 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 SUJ40X225-75S FAQ
Yes, the SUJ40X225-75S is discontinued. The direct replacement is the SAUJ40X225-75S, which shares the same 40 mm bore, 225 mm stroke, 1/4" port, and FA/LB mounting. You will need to upgrade the -S position sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
The external stop screw provides a 75 mm adjust window, allowing you to shorten the 225 mm extend stroke down to 150 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X225-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X225-75S replacement — usually within 7-8 hours.