This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X450-30S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X450-30S 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 SIJ80X450-30S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-30S 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 SAIJ80X450-30S, 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 → SAIJ80X450-30S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-30S
The AirTAC SIJ80X450-30S is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder with a 450 mm nominal stroke and a built-in piston magnet. An external stop screw lets you trim the extend stroke by up to 30 mm on-site, giving a usable extension window of 420-450 mm. The 80 mm bore uses a G3/8 port, a Ø25 mm rod, and 36 mm adjustable air cushions. At 0.5 MPa it delivers 2513 N push and 2268 N pull force, peaking at 4523 N push at 0.9 MPa.
The exact drop-in replacement is the SAIJ80X450-30S, which preserves the ISO 15552 mounting interface, bore, stroke, and G3/8 port. The SAIJ family introduces an upgraded two-piece Y-shaped 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 force), translating to a 128 kg vertical lift with a 2:1 margin. 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 SIJ80X450-30S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X450-30S |
| 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 SAIJ80X450-30S 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 SAIJ80X450-30S 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 SIJ80X450-30S
| 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 SIJ80X450-30S Is Used
Variable Press Stroke
Adjusting the extend stop on-site by up to 30 mm allows operators to fine-tune a pressing depth between 420 and 450 mm without changing the cylinder.
Product Diverting
Tuning the extend end position accommodates varying package widths on a line, ensuring the rod pushes precisely to the required divert distance.
Pallet Positioning
Trimming the stroke in the field sets exact placement stops for different pallet sizes, preventing over-travel during loading operations.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-30S with the SAIJ80X450-30S
To replace the discontinued SIJ80X450-30S, order the drop-in SAIJ80X450-30S, which matches the 80 mm bore, 450 mm stroke, 30 mm adjust window, G3/8 port, and ISO 15552 mounting. When sizing both ways, the neighboring 63 mm bore yields 2182 N push at 0.7 MPa, while the 100 mm bore yields 5497 N push at 0.7 MPa. Choose the 30 mm adjust window if your extend stroke needs on-site tuning between 420 and 450 mm. Mounting options include Basic, FA, LB, and TC brackets. The -S suffix confirms the piston magnet is present for legacy CS1-B/DS1-B switches. Because the 450 mm stroke is long, verify side-load limits, rod-bending forces, and use external guides to prevent premature wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X450-30S
- ✓ 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 SIJ80X450-30S FAQ
Yes, the SIJ80X450-30S is discontinued. The exact drop-in replacement is the SAIJ80X450-30S. It shares the identical ISO 15552 interface, 80 mm bore, 450 mm stroke, 30 mm adjust window, G3/8 port, and mounting options. The SAIJ upgrade features a two-piece Y-shaped piston seal for lower start-up pressure and longer life.
The 80 mm bore provides 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, and 4523 N push at 0.9 MPa. The theoretical max is 513 kgf at 1.0 MPa. The external stop screw provides a 30 mm adjustable window, allowing the 450 mm extend stroke to be shortened to 420 mm on-site. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
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