This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAUJ100X280-50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAUJ100X280-50 in place of this model. 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 drop-in 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
About the Airtac SUJ Adjustable Cylinder SUJ100X280-50
The AirTAC SUJ100X280-50 is a double-acting single-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. It delivers 3927 N push and 3681 N pull at 0.5 MPa, peaking at 7068 N push at 0.9 MPa. 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 drop-in.
For sizing, a safe working load is roughly 2356 N (60% of the 0.5 MPa push), translating to a 200 kg vertical lift with a 2:1 margin. 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 — a true drop-in on output. 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 drop-in SAUJ100X280-50 to keep the 100 mm bore, 280 mm stroke, 50 mm adjust window, 1/2" port, and FA/LB mounting identical. If resizing, the 80 mm bore neighbour gives 2513 N push at 0.5 MPa, while the 100 mm bore itself offers 3927 N at 0.5 MPa. 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 exact drop-in 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 double-acting single-rod cylinder delivers 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, and 7068 N push at 0.9 MPa. 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
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