This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X300-50, 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 SUJ100X300-50
The AirTAC Airtac SUJ Adjustable Cylinder SUJ100X300-50 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 SAUJ100X300-50, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke300 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X300-50
- 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 SUJ100X300-50
The AirTAC SUJ100X300-50 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, yielding a usable 250-300 mm stroke from the 300 mm nominal maximum. The 1/2" port and M20x1.5 rod end handle high flow, while the 29 mm adjustable air cushions decelerate heavy loads. Note this SKU lacks a magnet and cannot take a switch.
The direct replacement is the SAUJ100X300-50, matching the 100 mm bore, 300 mm stroke, 1/2" port, and SC-series FA/LB mounting. The SAUJ upgrade uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B, and offers the SAUF built-in-valve variant. 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 SUJ100X300-50 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X300-50 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X300-50 |
| 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 SAUJ100X300-50 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 SAUJ100X300-50 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 SUJ100X300-50
| 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 SUJ100X300-50 Is Used
Press Fit Tuning
Trimming the extend stroke by up to 50 mm on-site allows precise press-fit depth adjustment without machining custom spacers for heavy 100 mm bore tooling.
Variable Stroke Diverter
Adjusting the extend end position on the fly accommodates different package sizes on a conveyor line, using the 1/2" port for rapid actuation.
Adjustable End Stop Pusher
Setting a specific 250 mm extend stroke from the 300 mm maximum provides a firm mechanical end position for pushing heavy pallets, avoiding valve-centering drift.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X300-50 with the SAUJ100X300-50
To replace this discontinued SUJ100X300-50, order the SAUJ100X300-50 direct: it preserves the 100 mm bore, 300 mm nominal stroke, 50 mm adjust window, 1/2" port, and FA/LB mounts. Choose the 50 mm adjust window if you need precise field tuning of the extend end position; the stop screw shortens the stroke on-site but does not lock the load. Because this non-magnetic SKU cannot take a switch, migrate to SAUJ with -S and CMSG/DMSG/EMSG sensors if position detection is needed. At 300 mm stroke, mind side-load and rod-bending forces by supporting the load with external guides.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X300-50
- ✓ 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 SUJ100X300-50 FAQ
Yes, the SUJ100X300-50 is discontinued. The direct replacement is the SAUJ100X300-50, which matches the 100 mm bore, 300 mm stroke, 50 mm adjust window, 1/2" port, and FA/LB mounting. The SAUJ also uses current CMSG/DMSG/EMSG sensors instead of the legacy CS1-B/DS1-B.
This double-acting double-rod cylinder pushes 3927 N and pulls 3681 N at 0.5 MPa, pushing 5497 N at 0.7 MPa and 7068 N at 0.9 MPa, with a theoretical max of 801 kgf. The external stop screw provides a 50 mm adjust window, allowing you to trim the extend stroke from 300 mm down to 250 mm on-site. The stop sets end position only; it is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X300-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X300-50 replacement — usually within 7-8 hours.