This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ63X400-50, 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 SUJ63X400-50
The AirTAC SUJ Adjustable Cylinder SUJ63X400-50 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 SAUJ63X400-50, which matches its bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke400 mm
- Port size3/8"
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAUJ63X400-50
- 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 SUJ63X400-50
The AirTAC SUJ63X400-50 is a double-acting double-rod profile cylinder with a 63mm bore and 400mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 50mm on-site, yielding a usable 350-400mm window. The stop sets the end position but is not a load lock; use an external rod lock for held loads.
The direct replacement is the SAUJ63X400-50, preserving the bore, stroke, force, port, and FA/LB mounting. Upgrading to the SAUJ moves you to current CMSG/DMSG/EMSG sensors (this SKU used legacy CS1-B/DS1-B) and lacks a magnet for switches. At 400mm stroke, use external guides to prevent rod bending.
Airtac SUJ Adjustable Cylinder SUJ63X400-50 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ63X400-50 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ63X400-50 |
| 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 SAUJ63X400-50 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 SAUJ63X400-50 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 SUJ63X400-50
| 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 SUJ63X400-50 Is Used
Variable Pitch Indexing
Allows on-site extend tuning up to 50mm to alter part ejection distance without swapping the entire cylinder.
Adjustable Diverter Gates
Trims the extend stroke to accommodate different package widths on the fly, ensuring precise routing.
Variable Depth Pushers
Shortens the extend stroke by up to 50mm to push varying carton depths into packing zones accurately.
Replacing the Airtac SUJ Adjustable Cylinder SUJ63X400-50 with the SAUJ63X400-50
To replace the discontinued SUJ63X400-50, order the direct replacement SAUJ63X400-50. It keeps the 63mm bore, 400mm nominal stroke, 3/8" port, M16x1.5 rod thread, and FA/LB mounting. The 50mm adjust window is retained, letting you trim the extend stroke down to 350mm on-site. Because this SKU has no magnet, it cannot take a switch; the SAUJ upgrade uses current CMSG/DMSG/EMSG sensors. For the 400mm stroke, add external guides to manage side-load and rod-bending. The stop screw sets end position only; it is not a lock, so add an external rod lock for load holding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ63X400-50
- ✓ 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 SUJ63X400-50 FAQ
Yes, the SUJ63X400-50 is discontinued. The direct replacement is the SAUJ63X400-50, which matches the 63mm bore, 400mm stroke, 50mm adjust window, 3/8" 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 window is 50mm, allowing you to trim the 400mm extend stroke down to 350mm. The stop sets end position only and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ63X400-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ63X400-50 replacement — usually within 7-8 hours.