This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X350-50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X350-50 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 SIJ80X350-50
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-50 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 SAIJ80X350-50, 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 → SAIJ80X350-50
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-50
The AirTAC SIJ80X350-50 is a discontinued double-acting single-rod adjustable-stroke ISO 15552 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, and 36 mm adjustable cushions. It delivers 2513 N push and 2268 N pull at 0.5 MPa. The exact drop-in replacement is the SAIJ80X350-50, matching the interface, force, and mounting.
The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. For sizing, a safe working load is roughly 1508 N (60% of the 0.5 MPa push), equating to a 128 kg vertical lift with a 2:1 margin. Remember the stop screw sets end position only; it is not a lock. Without live air the piston drifts, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-50 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X350-50 |
| 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 SAIJ80X350-50 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 SAIJ80X350-50 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 SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-50
| 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 SIJ80X350-50 Is Used
Variable Depth Boring
Needs field stroke tuning to set precise boring depths on-site without swapping the entire cylinder.
Adjustable Transfer Stops
Requires trimming the extend stroke by up to 50 mm to accommodate changing package sizes on the line.
Tiered Pallet Positioning
Demands an adjustable end position to locate pallets at varying heights before downstream processing.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-50 with the SAIJ80X350-50
To replace the discontinued SIJ80X350-50, order the drop-in SAIJ80X350-50, keeping the 50 mm adjust window and 350 mm nominal stroke. When sizing both ways, the neighboring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N. Reuse your FA, LB, or TC mounts via the ISO 15552 interface. This SKU lacks the -S magnet and cannot take a switch. For the 350 mm stroke, use external guides to prevent rod bending under side loads. The stop screw trims extend position but does not lock the load on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X350-50
- ✓ 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 SIJ80X350-50 FAQ
Yes, the SIJ80X350-50 is discontinued. The exact drop-in replacement is the SAIJ80X350-50. It shares the same ISO 15552 interface, 80 mm bore, 350 mm stroke, 50 mm adjust window, G3/8 port, and mounting. The SAIJ family adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and 4523 N at 0.9 MPa, with a theoretical max of 513 kgf. The external stop screw provides a 50 mm adjust window, allowing a usable extend stroke of 300-350 mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
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