This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X225-75, 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 SUJ40X225-75
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X225-75 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 SAUJ40X225-75, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke225 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X225-75
- 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 SUJ40X225-75
The AirTAC SUJ40X225-75 is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 75 mm on-site, giving a usable forward travel of 150 to 225 mm from the 225 mm nominal maximum. The stop screw sets the end position but is not a load lock.
This SUJ model is discontinued; the direct replacement is the SAUJ40X225-75, matching the bore, stroke, force, port, and FA/LB mounting. The SAUJ upgrade shifts sensing to current CMSG/DMSG/EMSG switches from the legacy CS1-B/DS1-B, though this specific non-magnet SKU cannot take a switch.
Airtac SUJ Adjustable Cylinder SUJ40X225-75 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X225-75 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X225-75 |
| 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 SAUJ40X225-75 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 SAUJ40X225-75 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 SUJ40X225-75
| 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 SUJ40X225-75 Is Used
Variable Depth Spotting
Adjusting the extend stroke on-site to set precise probing or spotting depths in machining fixtures without swapping cylinders.
Variable Length Diverter
Tuning a diverter arm's reach on a conveyor line to handle changing package sizes on the fly.
Adjustable Forming Stop
Setting exact material fold or forming positions in packaging equipment where product dimensions frequently change.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X225-75 with the SAUJ40X225-75
To replace the discontinued SUJ40X225-75, order the direct replacement SAUJ40X225-75, which preserves the 40 mm bore, 225 mm stroke, 75 mm adjust window, 1/4" port, and FA/LB mounting. Choose the 75 mm adjust window when you need on-site tuning of the extend stroke without machining external stops. Because this non-magnet SKU lacks a piston magnet, it cannot accept a sensor; if sensing is required, move to an SAUJ with the -S suffix and use CMSG/DMSG/EMSG switches. For this 225 mm stroke, keep side-load within the manufacturer's allowable limits by using FA or LB mounts to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X225-75
- ✓ 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 SUJ40X225-75 FAQ
Yes, the SUJ40X225-75 is discontinued. The direct replacement is the SAUJ40X225-75, which matches the 40 mm bore, 225 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.
The external stop screw trims the extend stroke by up to 75 mm on-site (usable 150-225 mm). This SKU has no piston magnet and cannot take a switch. The stop sets end position but is not a load lock; use an external rod lock for held loads.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X225-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X225-75 replacement — usually within 7-8 hours.