This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X450-75S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X450-75S 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 SIJ80X450-75S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-75S 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 SAIJ80X450-75S, 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 → SAIJ80X450-75S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-75S
The AirTAC SIJ80X450-75S 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 75 mm on-site, yielding a usable 375-450 mm window from the 450 mm nominal maximum. The 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa via a G3/8 port, with a 25 mm carbon/SUS420J2/SUS304 rod and 36 mm adjustable cushions. The exact drop-in replacement is the SAIJ80X450-75S, reusing the same ISO 15552 mounting interface, force, and adjust window.
The SAIJ family upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. The stop screw sets the end position but is not a load lock; a plain cylinder drifts on air loss, so use an external rod lock or SAIL/BSAI variant for held loads. Computed buyer insight: 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 -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-75S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X450-75S |
| 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 SAIJ80X450-75S 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 SAIJ80X450-75S 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 SIJ80X450-75S
| 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 SIJ80X450-75S Is Used
Variable-Length Pressing
Field-tune the 375-450 mm extend stop to press components of varying heights without re-specifying fixed-stop tooling for each batch.
Adjustable Transfer Diverter
Trim the extend stroke on-site to deflect different package widths on a conveyor line, ensuring precise routing without cylinder swaps.
Tiered Pallet Positioning
Set the external stop screw to reach specific pallet layer heights dynamically, accommodating varied load profiles in packaging cells.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-75S with the SAIJ80X450-75S
To replace the discontinued SIJ80X450-75S, order the drop-in SAIJ80X450-75S, keeping the 450 mm nominal stroke, 75 mm adjust window, and -S magnet. Size both ways using 0.5 MPa push force: the 63 mm bore yields 1559 N, and the 100 mm bore yields 3927 N. The 75 mm adjust window is ideal for field-tuning the extend end position without machining. Mounting options include Basic, FA, LB, and TC brackets. Because the 450 mm stroke exceeds 300 mm, account for side-load and rod-bending forces by using external guides to prevent premature seal wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X450-75S
- ✓ 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 SIJ80X450-75S FAQ
Yes, the SIJ80X450-75S is discontinued. The exact drop-in replacement is the SAIJ80X450-75S, offering the same ISO 15552 interface, 80 mm bore, 450 mm stroke, 75 mm adjust window, G3/8 port, and mounting options.
The 80 mm bore provides 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N at 0.9 MPa, and 513 kgf max at 1.0 MPa. The external stop screw shortens the extend stroke by up to 75 mm on-site, giving a usable 375-450 mm window. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X450-75S
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