This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ40X225-20S, 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 SUJ40X225-20S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ40X225-20S 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 SAUJ40X225-20S, which matches its bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke225 mm
- Port size1/4"
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAUJ40X225-20S
- 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 SUJ40X225-20S
The AirTAC SUJ40X225-20S is a discontinued double-acting double-rod profile cylinder with a 225 mm nominal stroke and a 20 mm on-site stroke-trim window. An external stop screw lets you shorten the extend stroke down to 205 mm, setting the exact end position without needing custom machining. The direct replacement is the SAUJ40X225-20S, which matches the 40 mm bore, force, and FA/LB mounting.
The stop screw sets end position but is not a load lock; use an external rod lock for held loads. The SAUJ upgrade keeps the compact profile barrel but switches from legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches.
Airtac SUJ Adjustable Cylinder SUJ40X225-20S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ40X225-20S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ40X225-20S |
| 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 SAUJ40X225-20S 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 SAUJ40X225-20S 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 SUJ40X225-20S
| 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 SUJ40X225-20S Is Used
Variable Push Fixtures
Trimming the extend stroke by up to 20 mm on-site allows operators to tune part ejection or clamping depth without swapping cylinders.
Adjustable Diverters
Set precise diverting endpoints between 205 mm and 225 mm to handle varying package sizes on a single line.
Calibrated Sealing Heads
Dial in the exact 205-225 mm extend position to accommodate different carton heights without reprogramming controls.
Replacing the Airtac SUJ Adjustable Cylinder SUJ40X225-20S with the SAUJ40X225-20S
To replace the discontinued SUJ40X225-20S, order the direct replacement SAUJ40X225-20S, which preserves the 40 mm bore, 225 mm stroke, 1/4" port, and FA/LB mounting. The 20 mm adjust window is ideal if your extend stroke needs field tuning between 205 mm and 225 mm. Because this unit has the -S magnet, note the sensor change from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG. For this 225 mm stroke, confirm side-load alignment to prevent rod binding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ40X225-20S
- ✓ 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 SUJ40X225-20S FAQ
Yes, the SUJ40X225-20S is discontinued. The direct replacement is the SAUJ40X225-20S, which matches the 40 mm bore, 225 mm stroke, 1/4" port, and FA/LB mounting. The SAUJ uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B switches.
The 20 mm adjust window allows shortening the 225 mm extend stroke down to 205 mm. The stop screw sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ40X225-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ40X225-20S replacement — usually within 7-8 hours.