This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X350-20S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X350-20S in place of this model. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-20S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 350mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X350-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X350-20S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-20S
The AirTAC SIJ80X350-20S is a discontinued double-acting, single-rod ISO 15552 adjustable-stroke cylinder with a 350mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 20mm on-site, yielding a usable 330-350mm window. The 80mm bore features a G3/8 port, M20x1.5 rod thread, and 36mm adjustable cushions. It delivers 2513N push and 2268N pull at 0.5MPa, reaching 4523N at 0.9MPa. The exact drop-in replacement is the SAIJ80X350-20S, matching the interface, force, and porting.
The SAIJ successor retains ISO 15552 mounting reuse and adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. Based on the 0.5MPa push force, the computed safe working load is about 1508N (60% of 2513N), translating to a 128kg vertical lift with a 2:1 margin. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches. Note the stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-20S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X350-20S |
| Bore size | Ø80 mm |
| Stroke | 350 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ80X350-20S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
The SAIJ80X350-20S 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×350 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-20S Is Used
Press Fit Tuning
Final insertion depth of a bearing requires field stroke tuning. The 20mm stop screw window lets operators dial in the exact 330-350mm extend endpoint without changing the cylinder body.
Variable Length Diverter
A sorting arm deflects varying package sizes. Trimming the extend stroke by up to 20mm on-site allows precise repositioning of the diverter tip to match new conveyor lane widths.
Adjustable Flap Folder
Carton sealing machinery handles multiple box heights. The external stop screw shortens the extend stroke to accommodate smaller cartons, preventing overtravel and crushing.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-20S with the SAIJ80X350-20S
To replace the discontinued SIJ80X350-20S, order the drop-in SAIJ80X350-20S, keeping the exact 80mm bore, 350mm stroke, 20mm adjust window, and G3/8 port. When sizing both ways, the neighboring 63mm bore yields 2182N push at 0.7MPa, while the 100mm bore yields 5497N push at 0.7MPa. Choose the 20mm adjust window if your extend endpoint needs on-site tuning between 330mm and 350mm. Mounting options include FA, LB, and TC brackets. The -S suffix ensures a piston magnet is present for position sensing. For this 350mm stroke, verify side-load conditions and use external guides to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X350-20S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-20S FAQ
Yes, the SIJ80X350-20S is discontinued. The exact drop-in replacement is the SAIJ80X350-20S. It shares the same ISO 15552 interface, 80mm bore, 350mm nominal stroke, 20mm adjust window, G3/8 port, and mounting options. The SAIJ family also features an upgraded piston seal for longer life.
The 80mm bore provides 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, and 4523N push at 0.9MPa. The external stop screw window is 20mm, allowing you to trim the extend stroke from the 350mm maximum down to 330mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
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