This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X300-50S, 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 SUJ100X300-50S
The AirTAC SUJ Adjustable Cylinder SUJ100X300-50S is a double-acting profile-type standard cylinder with a Ø100mm bore and 300mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ100X300-50S, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke300 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X300-50S
- 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 SUJ100X300-50S
The AirTAC SUJ100X300-50S is a discontinued 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, yielding a usable 250-300 mm extend out of the 300 mm nominal maximum. It features a 25 mm rod, M20x1.5 rod thread, 29 mm adjustable air cushions, and a 1/2 inch port. This unit is discontinued; the direct replacement is the SAUJ100X300-50S, which shares the same compact profile body, bore, force, and FA/LB mounting.
The stop screw sets the end position but is not a lock; plain cylinders drift on air loss, so use an external rod lock for held loads. The SAUJ upgrade also transitions from legacy CS1-B/DS1-B sensors to current CMSG/DMSG/EMSG switches. At 300 mm stroke, external guides are recommended to prevent rod bending under side loads.
Airtac SUJ Adjustable Cylinder SUJ100X300-50S Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X300-50S |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X300-50S |
| Bore size | Ø100 mm |
| Stroke | 300 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 SAUJ100X300-50S 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 SAUJ100X300-50S 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 SUJ100X300-50S
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SUJ100X300-50S Is Used
Variable Press Stroke
Adjusting the extend stroke on-site by up to 50 mm allows precise press positioning for parts of varying heights without re-mounting the cylinder.
Dynamic Diverter Length
Tuning the extend end position to shift product flow accurately on packaging lines where stop locations frequently change.
Adjustable Pallet Stop
Setting a specific extend stroke out of the 300 mm maximum to accommodate different pallet depths on material handling conveyors.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X300-50S with the SAUJ100X300-50S
To replace the discontinued SUJ100X300-50S, order the direct replacement SAUJ100X300-50S, which preserves the 100 mm bore, 300 mm nominal stroke, 50 mm adjust window, 1/2 inch port, and FA/LB mounting. Choose the 50 mm adjust window if your end position requires field tuning between 250 mm and 300 mm. Because this unit has the -S magnet, upgrade your legacy CS1-B/DS1-B switches to CMSG/DMSG/EMSG sensors. For the 300 mm stroke, add external guides to manage side-load and rod-bending risks.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X300-50S
- ✓ 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 SUJ100X300-50S FAQ
Yes, the SUJ100X300-50S is discontinued. The direct replacement is the SAUJ100X300-50S, which maintains the same 100 mm bore, 300 mm stroke, 50 mm adjust window, 1/2 inch port, and FA/LB mounting.
The external stop screw window is 50 mm, allowing you to trim the 300 mm extend stroke down to 250 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X300-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X300-50S replacement — usually within 7-8 hours.