This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X450-20 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X450-20 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 SIJ80X450-20
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-20 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 SAIJ80X450-20, 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 → SAIJ80X450-20
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-20
The AirTAC SIJ80X450-20 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 20 mm on-site, yielding a usable 430-450 mm stroke. This 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa, peaking at 4523 N push at 0.9 MPa. It features a Ø25 mm rod, G3/8 port, and 36 mm adjustable cushions. The exact drop-in replacement is the SAIJ80X450-20, sharing the same interface, force, and mounting.
The SAIJ successor retains the physical dimensions but incorporates an upgraded piston seal (two Y-shaped one-way elements) 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), translating to a 128 kg vertical lift with a 2:1 margin. Note this SKU lacks a magnet (-S), so it cannot accept a magnetic switch. 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 SIJ80X450-20 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X450-20 |
| 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 SAIJ80X450-20 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 SAIJ80X450-20 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 SIJ80X450-20
| 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 SIJ80X450-20 Is Used
Press Fit Tuning
Final insertion depth requires field stroke tuning. Trim the 450 mm extend stroke by up to 20 mm on-site to set precise pressing positions without re-engineering the fixture.
Divertor Positioning
Adjusting a divertor arm on-site to accommodate varying package sizes. The 20 mm adjust window allows operators to fine-tune the end position quickly.
Pallet Stop Calibration
Calibrating a pallet stop gate where the exact contact point varies. The external stop screw provides a hard mechanical end position for consistent placement.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-20 with the SAIJ80X450-20
To replace the discontinued SIJ80X450-20, order the exact drop-in SAIJ80X450-20. If re-sizing, the neighboring bores are 63 mm (2182 N push @0.7 MPa) and 100 mm (5497 N push @0.7 MPa) versus this 80 mm bore (3518 N push @0.7 MPa). The -20 adjust window means you can shorten the 450 mm nominal extend stroke by up to 20 mm on-site. Mounting interchange is maintained via ISO 15552 interface dimensions (Basic, FA, LB, TC). Because this SKU has no -S suffix, it cannot support legacy CS1-B/DS1-B sensors. For the 450 mm stroke, use external guides to prevent rod bending and manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X450-20
- ✓ 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 SIJ80X450-20 FAQ
Yes, the SIJ80X450-20 is discontinued. The exact drop-in replacement is the SAIJ80X450-20. It shares the same ISO 15552 interface, 80 mm bore, 450 mm stroke, 20 mm adjust window, G3/8 port, and mounting options. The SAIJ family also adds upgraded piston seals and lock variants like SAIL and BSAI.
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 (theoretical max 513 kgf at 1.0 MPa). The external stop screw provides a 20 mm adjust window, shortening the 450 mm extend stroke down to 430 mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
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