This model is discontinued
AirTAC has phased out the SU series. You can still order this code here: we ship the direct replacement SAUJ100X280-50, 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 SUJ100X280-50
The AirTAC Airtac SUJ Adjustable Cylinder SUJ100X280-50 is a double-acting profile-type standard cylinder with a Ø100mm bore and 280mm stroke, 1/2" air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAUJ100X280-50, which matches its bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke280 mm
- Port size1/2"
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAUJ100X280-50
- 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 SUJ100X280-50
The AirTAC SUJ100X280-50 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 230 to 280 mm stroke from the 280 mm nominal maximum. The 1/2" port and M20x1.5 rod end handle high flow, while the 29 mm adjustable cushions decelerate heavy loads. This discontinued unit is fully replaced by the SAUJ100X280-50 direct.
The stop screw sets end position but is not a load lock; use an external rod lock for held loads. This non-magnet SKU cannot take switches, whereas the SAUJ replacement upgrades sensing to CMSG/DMSG/EMSG from the legacy CS1-B/DS1-B. The compact profile barrel is shorter than an ISO 15552 cylinder of the same bore, and FA/LB mounts are retained.
Airtac SUJ Adjustable Cylinder SUJ100X280-50 Technical Specifications
| Model | Airtac SUJ Adjustable Cylinder SUJ100X280-50 |
|---|---|
| Series | SU profile-type cylinder (discontinued) |
| Replacement | SAUJ100X280-50 |
| Bore size | Ø100 mm |
| Stroke | 280 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 SAUJ100X280-50 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 SAUJ100X280-50 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 SUJ100X280-50
| SU | Profile-type standard cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×280 | 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 SUJ100X280-50 Is Used
Press Fit Tuning
Allows operators to dial in the exact 230 to 280 mm extend position for inserting bearings without changing fixed stop collars.
Variable Diverter Stroke
Adjusts the extend length on-site to accommodate different package sizes on a sorting line before actuating the diverter.
Adjustable End Stops
Provides a field-tunable end position for pallet lifting profiles where the exact extend target varies by pallet height.
Replacing the Airtac SUJ Adjustable Cylinder SUJ100X280-50 with the SAUJ100X280-50
To replace the discontinued SUJ100X280-50, order the exact direct replacement SAUJ100X280-50 to keep the 100 mm bore, 280 mm stroke, 50 mm adjust window, 1/2" port, and FA/LB mounting identical. Choose the 50 mm adjust window when you need on-site extend tuning from 230 to 280 mm without machining. Because this non-magnet SKU lacks a piston magnet, you cannot mount sensors; the SAUJ upgrade enables current CMSG/DMSG/EMSG switches instead of the legacy CS1-B/DS1-B. For this 280 mm stroke, verify side-load alignment to prevent rod binding, and note that the stop screw sets end position but does not lock the load on air loss.
Replacement checklist
- ✓ Same bore / stroke → SAUJ100X280-50
- ✓ 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 SUJ100X280-50 FAQ
Yes, the SUJ100X280-50 is discontinued. The direct replacement is the SAUJ100X280-50, which matches the 100 mm bore, 280 mm stroke, 50 mm adjust window, 1/2" port, and FA/LB mounting. The SAUJ also upgrades sensor compatibility to CMSG/DMSG/EMSG from the legacy CS1-B/DS1-B.
The external stop screw provides a 50 mm adjust window, allowing the extend stroke to be shortened from the 280 mm nominal maximum down to 230 mm on-site. The stop sets end position but is not a load lock.
Related AirTAC SAU Cylinders
Request a Quote for the SAUJ100X280-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAUJ100X280-50 replacement — usually within 7-8 hours.