This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X300-40S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X300-40S 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 SIJ80X300-40S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 300mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X300-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke300 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X300-40S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-40S
The AirTAC SIJ80X300-40S 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, yielding a usable 260-300 mm stroke from the 300 mm nominal maximum. It features a 25 mm rod, G3/8 port, and 36 mm adjustable cushions. The exact drop-in replacement is the SAIJ80X300-40S, matching the interface, bore, force, and mounting.
At 0.5 MPa it delivers 2513 N push and 2268 N pull, scaling to 3518 N at 0.7 MPa. A computed buyer insight sets the safe working load near 1508 N (60% of the 0.5 MPa push), allowing a 128 kg vertical lift with a 2:1 margin. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure. The stop sets end position but is not a load lock; for held loads use SAIL or BSAI variants.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-40S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X300-40S |
| Bore size | Ø80 mm |
| Stroke | 300 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 SAIJ80X300-40S 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 SAIJ80X300-40S 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 SIJ80X300-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×300 | 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 SIJ80X300-40S Is Used
Variable Depth Forming
Sheet metal stamping presses requiring on-site stroke tuning to alter the forming depth by up to 40 mm without swapping cylinders.
Adjustable Transfer Stops
Packaging lines needing field stroke trimming to handle different carton lengths on the fly, using the 260-300 mm extend window.
Tiered Pallet Positioning
Logistics depots adjusting the extend end position to interface with varying pallet heights while maintaining the 2513 N push force.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-40S with the SAIJ80X300-40S
To replace the SIJ80X300-40S, order the drop-in SAIJ80X300-40S, reusing your existing ISO 15552 FA, LB, or TC mounts and G3/8 plumbing. The -S suffix means a piston magnet is present for legacy CS1-B/DS1-B switches; the SAIJ uses current switches. Sizing both ways: the neighboring 63 mm bore yields 2182 N push at 0.7 MPa, while the 100 mm bore yields 5497 N. Choose the 40 mm adjust window if your extend target sits between 260 and 300 mm. Because the stroke is 300 mm, ensure external guides to prevent rod bending under side-load. The stop screw sets end position; it is not a lock, so add an external rod lock for load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X300-40S
- ✓ 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 SIJ80X300-40S FAQ
Yes, the SIJ80X300-40S is discontinued. The exact drop-in replacement is the SAIJ80X300-40S. It shares the identical ISO 15552 interface, 80 mm bore, 300 mm stroke, 40 mm adjust window, G3/8 port, and mounting options. The SAIJ upgrade features an improved two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The double-acting single-rod SIJ80X300-40S delivers 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 a theoretical max of 513 kgf at 1.0 MPa. The external stop screw provides a 40 mm adjust window, shortening the 300 mm extend stroke down to 260 mm. The stop sets end position and is not a load lock; add an external rod lock for held loads.
Related AirTAC SAI Cylinders
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