This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X300-20, 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 SUJ100X300-20
The AirTAC Airtac SUJ Adjustable Cylinder SUJ100X300-20 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 SAUJ100X300-20, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke300 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X300-20
- 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 SUJ100X300-20
The AirTAC SUJ100X300-20 is a double-acting, double-rod profile cylinder with an external stop screw that lets you trim the extend stroke by up to 20 mm on-site, yielding a usable 280-300 mm stroke. The nominal 300 mm is the maximum. The 1/2" port and 29 mm adjustable cushions manage the kinetic energy of this large bore.
This SUJ model is discontinued; the direct replacement is the SAUJ100X300-20, matching the 100 mm bore, 300 mm stroke, force, and SC-series FA/LB mounting. The SAUJ upgrades sensing to current CMSG/DMSG/EMSG switches (this SKU has no magnet and cannot take a switch). 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 SUJ100X300-20 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X300-20 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X300-20 |
| 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 SAUJ100X300-20 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 SAUJ100X300-20 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 SUJ100X300-20
| 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 SUJ100X300-20 Is Used
Press Fit Tuning
Allows operators to dial in the exact 280-300 mm extend position for pressing bearings without machining hard stops.
Divertor Gate Adjustment
Fine-tunes the gate extend length on-site to accommodate varying package sizes on a packaging line.
Pallet Stop Positioning
Provides a field-adjustable end position for pallet stops, letting operators shorten the stroke by up to 20 mm as needed.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X300-20 with the SAUJ100X300-20
To replace the discontinued SUJ100X300-20, order the SAUJ100X300-20. It is a direct: same 100 mm bore, 300 mm max stroke, 1/2" port, M20x1.5 rod thread, and FA/LB mounting. Choose the 20 mm adjust window if you need precise 280-300 mm extend tuning. Because this SKU lacks a magnet, you cannot mount sensors; the SAUJ with the -S option uses CMSG/DMSG/EMSG sensors (the SUJ used CS1-B/DS1-B). At the 300 mm stroke, mind side-load and rod-bending—use external guides to prevent binding.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X300-20
- ✓ 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 SUJ100X300-20 FAQ
Yes, the SUJ100X300-20 is discontinued. The direct replacement is the SAUJ100X300-20, matching the 100 mm bore, 300 mm stroke, 1/2" port, and FA/LB mounting. The SAUJ also supports the SAUF built-in-valve variant and uses current CMSG/DMSG/EMSG sensors.
The external stop screw provides a 20 mm adjust window, shortening the extend stroke from 300 mm down to 280 mm. The stop sets position only and is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X300-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X300-20 replacement — usually within 7-8 hours.