This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X450-40 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X450-40 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 SIJ80X450-40
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 450mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X450-40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke450 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X450-40
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-40
The AirTAC SIJ80X450-40 is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, giving a usable range of 410-450 mm from the 450 mm nominal maximum. The 80 mm bore uses a G3/8 port, a Ø25 mm rod with an M20x1.5 thread, and 36 mm adjustable cushions. It delivers 2513 N push and 2268 N pull at 0.5 MPa, reaching 4523 N at 0.9 MPa. The drop-in replacement is the SAIJ80X450-40, matching the interface, force, and mounting.
For sizing, a safe working load is roughly 1508 N (60% of the 0.5 MPa push), translating to a 128 kg vertical lift with a 2:1 margin. The SAIJ upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life. The stop screw sets the end position but is not a load lock; use an external rod lock or the SAIL/BSAI variants for held loads. This non-magnetic SKU cannot take a switch.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-40 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X450-40 |
| Bore size | Ø80 mm |
| Stroke | 450 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 SAIJ80X450-40 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 SAIJ80X450-40 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 SIJ80X450-40
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×450 | 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 SIJ80X450-40 Is Used
Variable Stroke Pressing
Trimming the 450 mm extend stroke by up to 40 mm on-site allows precise positioning of pressing heads without machining custom spacers.
Adjustable Transfer Diverter
Field-tuning the extend end position lets operators alter the divert distance on a conveyor line to handle varying package widths.
Variable Depth Pallet Stops
An external stop screw provides a quick mechanical adjustment for pallet stop depth, accommodating different load lengths on the fly.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-40 with the SAIJ80X450-40
To replace the discontinued SIJ80X450-40, order the drop-in SAIJ80X450-40, reusing your existing ISO 15552 FA, LB, or TC mounts. For sizing both ways: the neighbouring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N. The 40 mm adjust window is ideal if your extend stroke needs field tuning between 410 and 450 mm. Because this SKU lacks the -S magnet, it cannot accept a magnetic switch; confirm sensing needs. For the 450 mm stroke, ensure external guides to prevent rod bending and side-load wear. The stop screw sets end position only; it does not hold loads on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X450-40
- ✓ 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 SIJ80X450-40 FAQ
Yes, the SIJ80X450-40 is discontinued. The exact drop-in replacement is the SAIJ80X450-40, offering the same ISO 15552 interface, 450 mm stroke, 40 mm adjust window, G3/8 port, and mounting compatibility.
The 80 mm bore provides 2513 N push and 2268 N pull at 0.5 MPa, 3518 N at 0.7 MPa, and 4523 N at 0.9 MPa. The external stop screw allows trimming the extend stroke by up to 40 mm on-site, yielding a usable 410-450 mm range. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X450-40
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