This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ63X400-30, 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 SUJ63X400-30
The AirTAC Airtac SUJ Adjustable Cylinder SUJ63X400-30 is a double-acting profile-type standard cylinder with a Ø63mm bore and 400mm stroke, 3/8" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ63X400-30, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke400 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ63X400-30
- 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 SUJ63X400-30
The AirTAC SUJ63X400-30 is a discontinued 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 370-400 mm stroke. Because this SKU lacks a magnet, it cannot take a magnetic switch.
As this SUJ series is end-of-life, the direct replacement is the SAUJ63X400-30, retaining the same body, bore, stroke, force, and SC-series FA/LB mounting. The SAUJ upgrades sensing to current CMSG/DMSG/EMSG switches from the legacy CS1-B/DS1-B used here. The stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
Airtac SUJ Adjustable Cylinder SUJ63X400-30 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ63X400-30 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ63X400-30 |
| Bore size | Ø63 mm |
| Stroke | 400 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 SAUJ63X400-30 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 SAUJ63X400-30 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 SUJ63X400-30
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×400 | 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 SUJ63X400-30 Is Used
Variable Pitch Indexing
Tuning the extend stroke by up to 30 mm on-site allows a 63 mm bore actuator to adapt part spacing between 370 mm and 400 mm without swapping the cylinder.
Transfer Line Diverter
A 400 mm extend stroke can be dialed back precisely to 385 mm to meet a moving conveyor belt, using the external stop to set the exact end position.
Replacing the Airtac SUJ Adjustable Cylinder SUJ63X400-30 with the SAUJ63X400-30
To replace the discontinued SUJ63X400-30, order the direct replacement SAUJ63X400-30, which matches the 63 mm bore, 400 mm max stroke, 30 mm adjust window, 3/8" port, and FA/LB mounting. Choose the 30 mm adjust window if you need to tune the extend stroke down to 370 mm on-site. Because this non-magnet SKU cannot support switches, migrating to the SAUJ enables modern CMSG/DMSG/EMSG sensors. At 400 mm stroke, prevent rod bending by supporting side loads with external guides. The stop screw sets end position but does not lock the load on air loss; add an external rod lock for vertical holding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ63X400-30
- ✓ 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 SUJ63X400-30 FAQ
Yes, the SUJ63X400-30 is discontinued. The direct replacement is the SAUJ63X400-30, matching the 63 mm bore, 400 mm stroke, 3/8" port, and FA/LB mounting. The SAUJ also uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
The external stop screw provides a 30 mm adjust window, shortening the 400 mm extend stroke down to 370 mm. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ63X400-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ63X400-30 replacement — usually within 7-8 hours.