This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ63X225-20S, 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 SUJ63X225-20S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ63X225-20S is a double-acting profile-type standard cylinder with a Ø63mm bore and 225mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ63X225-20S, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke225 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ63X225-20S
- 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 SUJ63X225-20S
The AirTAC SUJ63X225-20S is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 20 mm on-site, giving a usable 205-225 mm range from the 225 mm nominal maximum. It features a 3/8" port, a Ø20 mm rod, M16x1.5 rod thread, and 21 mm adjustable air cushions. The stop screw sets the end position but is not a load lock; use an external rod lock for held loads.
The direct replacement is the SAUJ63X225-20S, matching the 63 mm bore, 225 mm stroke, 3/8" port, and FA/LB mounting. Beyond the lifecycle upgrade, the SAUJ uses current CMSG/DMSG/EMSG sensors instead of this model's legacy CS1-B/DS1-B switches. The extruded aluminum profile barrel is shorter than an ISO 15552 cylinder of the same bore.
Airtac SUJ Adjustable Cylinder SUJ63X225-20S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ63X225-20S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ63X225-20S |
| Bore size | Ø63 mm |
| Stroke | 225 mm |
| Acting type | Double acting |
| Port size | 3/8" |
| Rod thread | M16×1.5 |
| 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 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUJ63X225-20S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAUJ63X225-20S 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 SUJ63X225-20S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 63 | 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 SUJ63X225-20S Is Used
Variable Depth Drilling
Adjusting the extend stroke on-site by up to 20 mm allows a drilling fixture to tune depth for different material thicknesses without swapping cylinders.
Variable Length Sorting
A diverter arm can trim its extend stroke within the 205-225 mm window to push varying package sizes onto specific conveyor lanes.
Adjustable Forming Stops
Packaging machines use the external stop screw to precisely set the extend end position for different carton dimensions on the fly.
Replacing the Airtac SUJ Adjustable Cylinder SUJ63X225-20S with the SAUJ63X225-20S
To replace the discontinued SUJ63X225-20S, order the direct replacement SAUJ63X225-20S, which preserves the 63 mm bore, 225 mm nominal stroke, 20 mm adjust window, 3/8" port, and FA/LB mounting. Choose the 20 mm adjust window if you need field tuning of the extend stroke within the 205-225 mm range. Because this unit has the -S magnet, upgrade your position sensing from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches. For this 225 mm stroke, verify side-load limits to prevent rod binding. Mounting compatibility is strictly with the AirTAC SC series.
Replacement checklist
- ✓ Same bore / stroke → SAUJ63X225-20S
- ✓ 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 SUJ63X225-20S FAQ
Yes, the SUJ63X225-20S is discontinued. The direct replacement is the SAUJ63X225-20S, offering the same 63 mm bore, 225 mm nominal stroke, 20 mm adjust window, 3/8" port, and FA/LB mounting. You must upgrade the position sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
The external stop screw window is 20 mm, allowing you to trim the extend stroke from the 225 mm maximum down to 205 mm on-site. The stop sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ63X225-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ63X225-20S replacement — usually within 7-8 hours.