This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X350-50S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X350-50S 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 SIJ80X350-50S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-50S 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 SAIJ80X350-50S, 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 → SAIJ80X350-50S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-50S
The AirTAC SIJ80X350-50S is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder with a 350 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 50 mm on-site, yielding a usable 300-350 mm window. The 80 mm bore uses a G3/8 port, a Ø25 mm rod with an M20x1.5 thread, and 36 mm adjustable cushions at each end. It delivers 2513 N push and 2268 N pull at 0.5 MPa, operating at 30-800 mm/s. The exact drop-in replacement is the SAIJ80X350-50S, retaining the same interface, force, and porting.
The SAIJ successor incorporates an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. This bore yields a safe working load of roughly 1508 N (60% of the 0.5 MPa push force) and can vertically lift about 128 kg with a 2:1 margin. The -S suffix indicates a built-in piston magnet for legacy CS1-B/DS1-B switches. Remember the stop screw sets the end position but is not a load lock; for held loads use an external rod lock or the SAIL/BSAI variants.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-50S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X350-50S |
| 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 SAIJ80X350-50S 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 SAIJ80X350-50S 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 SIJ80X350-50S
| 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 SIJ80X350-50S Is Used
Variable Depth Drilling
Allows operators to fine-tune the extend stroke by up to 50 mm on-site to accommodate multiple material thicknesses without changing the entire cylinder.
Adjustable Carton Flap Folding
Provides a 300-350 mm extend window to precisely fold varying carton heights on the fly, ensuring consistent flap positioning.
Tiered Pallet Positioning
Dials in the exact push stroke for different pallet load heights, preventing over-travel and damage to stacked goods.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-50S with the SAIJ80X350-50S
To replace the discontinued SIJ80X350-50S, order the exact drop-in SAIJ80X350-50S to reuse your existing ISO 15552 mounting footprint and G3/8 porting. If sizing both ways, the neighboring 63 mm bore provides 2182 N push at 0.7 MPa, while the 100 mm bore offers 5497 N push at 0.7 MPa. Choose the 50 mm adjust window when your extend stroke needs on-site tuning between 300 and 350 mm. Mounting options include Basic, FA, LB, and TC brackets. The -S suffix ensures piston magnet compatibility for position sensing. Because the 350 mm stroke is long, verify side-load conditions and use external guides to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X350-50S
- ✓ 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 SIJ80X350-50S FAQ
Yes, the SIJ80X350-50S is discontinued. The exact drop-in replacement is the SAIJ80X350-50S, which shares the same ISO 15552 interface, 80 mm bore, 350 mm nominal stroke, 50 mm adjust window, G3/8 port, and mounting options.
The 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N push at 0.9 MPa, and a 513 kgf max at 1.0 MPa. The external stop screw provides a 50 mm adjust window, shortening the extend stroke from the 350 mm maximum down to 300 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
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