This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ63X400-30S, 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 SUJ63X400-30S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ63X400-30S 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 SAUJ63X400-30S, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke400 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ63X400-30S
- 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 SUJ63X400-30S
The AirTAC SUJ63X400-30S is a 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 extension out of the 400 mm nominal maximum. It features a 20 mm rod, M16x1.5 rod-end thread, and a 3/8" port. This SUJ model is discontinued; the direct replacement is the SAUJ63X400-30S, retaining the same force, mounting, and adjustability.
The stop screw sets the end position but is not a load lock; use an external rod lock for held loads. Beyond the sensor upgrade from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches, the SAUJ offers the SAUF built-in-valve variant the SU line lacked. At 400 mm stroke, minimize side-load rod-bending via external guides.
Airtac SUJ Adjustable Cylinder SUJ63X400-30S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ63X400-30S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ63X400-30S |
| 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 SAUJ63X400-30S 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 SAUJ63X400-30S 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 SUJ63X400-30S
| 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 SUJ63X400-30S Is Used
Variable Pitch Indexing
Adjusting the extend stroke by up to 30 mm on-site allows a single 400 mm cylinder to drive multiple indexing pitches without changing the entire actuator assembly.
Transfer Line Diverter
Fine-tuning the extend stop in the field accommodates varying package sizes on a transfer line, ensuring the diverter meets exact product dimensions without re-mounting.
Adjustable Height Stops
Trimming the extend stroke on the fly lets a pusher mechanism handle different pallet heights or stack depths while maintaining a rigid external stop at the end position.
Replacing the Airtac SUJ Adjustable Cylinder SUJ63X400-30S with the SAUJ63X400-30S
To replace the discontinued SUJ63X400-30S, order the direct replacement SAUJ63X400-30S, which matches the 63 mm bore, 400 mm stroke, 30 mm adjust window, 3/8" port, and FA/LB mounting. Choose the 30 mm adjust window when you need precise on-site extend trimming between 370 and 400 mm. For the -S magnet, upgrade position sensing from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches. Because the 400 mm stroke exceeds 300 mm, use external guides to prevent rod-bending side loads.
Replacement checklist
- ✓ Same bore / stroke → SAUJ63X400-30S
- ✓ 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 SUJ63X400-30S FAQ
Yes, the SUJ63X400-30S is discontinued. The direct replacement is the SAUJ63X400-30S, offering the same 63 mm bore, 400 mm stroke, 30 mm adjust window, 3/8" port, and FA/LB mounting. You only need to upgrade the position sensors from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
The external stop screw allows you to trim the extend stroke by up to 30 mm on-site, giving a usable extension range of 370-400 mm. The stop sets the end position but does not lock the load; use an external rod lock for load holding.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ63X400-30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ63X400-30S replacement — usually within 7-8 hours.