This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X400-50S, 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 SUJ100X400-50S
The AirTAC Airtac SUJ Adjustable Cylinder SUJ100X400-50S is a double-acting profile-type standard cylinder with a Ø100mm bore and 400mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ100X400-50S, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke400 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X400-50S
- 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 SUJ100X400-50S
The AirTAC SUJ100X400-50S is a double-acting double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 50 mm on-site, giving a usable 350-400 mm extension out of the 400 mm nominal maximum. It features a 100 mm bore, a 25 mm piston rod with an M20x1.5 thread, and a 1/2 inch port. The extruded aluminum profile barrel is notably shorter than a standard cylinder of the same bore.
Because the SUJ series is discontinued, the direct replacement is the SAUJ100X400-50S, which preserves the bore, stroke, 50 mm adjust window, force, and porting. Upgrading to the SAUJ swaps the legacy CS1-B/DS1-B sensors for current CMSG/DMSG/EMSG switches. Remember 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 SUJ100X400-50S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X400-50S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X400-50S |
| Bore size | Ø100 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | 1/2" |
| Rod thread | M20×1.5 |
| 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, 29 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SU datasheet (now discontinued). The SAUJ100X400-50S carries the same ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAUJ100X400-50S 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 SUJ100X400-50S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | 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 SUJ100X400-50S Is Used
Variable Stroke Pressing
Allows on-site extend stroke tuning down by 50 mm to accommodate material thickness variations without reprogramming the machine cycle.
Adjustable Diverter Arms
Enables operators to fine-tune the 350-400 mm reach of a routing diverter on the line to handle changing package dimensions.
Custom Packaging Stops
Provides a field-adjustable end position for packing flaps or product stops, ensuring precise 350-400 mm extension regardless of carton size.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X400-50S with the SAUJ100X400-50S
To replace the discontinued SUJ100X400-50S, order the direct replacement SAUJ100X400-50S, which matches the 100 mm bore, 400 mm stroke, 50 mm adjust window, 1/2 inch port, and FA/LB mounting. Choose the 50 mm adjust window if your mechanism needs field tuning between 350 mm and 400 mm; the external stop is ideal when a fixed SAU plus external stop is too bulky. For the -S magnet option, upgrade from legacy CS1-B/DS1-B to CMSG/DMSG/EMSG sensors. Because the 400 mm stroke exceeds 300 mm, support the piston rod against side-load and bending with external guides to prevent premature seal wear.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X400-50S
- ✓ 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 SUJ100X400-50S FAQ
Yes, the SUJ100X400-50S is discontinued. The direct replacement is the SAUJ100X400-50S, sharing the same 100 mm bore, 400 mm stroke, 50 mm adjust window, 1/2 inch port, and FA/LB mounting. The SAUJ upgrades the sensor compatibility from legacy CS1-B/DS1-B to current CMSG/DMSG/EMSG switches.
This double-acting double-rod cylinder has a 50 mm adjust window, allowing the 400 mm extend stroke to be shortened to 350 mm on-site. The 1/2 inch port and 29 mm adjustable cushions ensure stable operation.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X400-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X400-50S replacement — usually within 7-8 hours.