This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X300-30S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X300-30S 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 SIJ80X300-30S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-30S 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 SAIJ80X300-30S, 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 → SAIJ80X300-30S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-30S
The AirTAC SIJ80X300-30S 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 30 mm on-site, yielding a usable 270-300 mm extension out of the 300 mm nominal maximum. The 80 mm bore uses a G3/8 port, a 25 mm rod, and 36 mm adjustable cushions, delivering 2513 N push and 2268 N pull at 0.5 MPa.
This SIJ model is discontinued; the exact drop-in replacement is the SAIJ80X300-30S, matching the ISO 15552 mounting interface, bore, force, and port. The SAIJ upgrade uses a two Y-shaped one-way 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), equating to a 128 kg vertical lift with a 2:1 margin. The stop screw sets end position only; it is not a load lock.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-30S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X300-30S |
| 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 SAIJ80X300-30S 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 SAIJ80X300-30S 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 SIJ80X300-30S
| 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 SIJ80X300-30S Is Used
Variable Press Stroke
Trimming the extend stroke by up to 30 mm on-site allows precise positioning of a press head without machining a new hard stop.
Adjustable Diverter Arm
A 270-300 mm extend window lets maintenance tune a conveyor diverter gate to match varying package sizes on the line.
Custom End-Stop Positioning
Setting the exact end position via the external screw avoids re-piping when a stacking pallet height changes slightly.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-30S with the SAIJ80X300-30S
To replace the discontinued SIJ80X300-30S, order the drop-in SAIJ80X300-30S, keeping the same 30 mm adjust window and -S magnet for legacy CS1-B/DS1-B switches. For force sizing, this 80 mm bore yields 2513 N push at 0.5 MPa; a neighbouring 63 mm bore provides 1559 N, while a 100 mm bore provides 3927 N. Reuse existing FA, LB, or TC ISO 15552 mounts. Because the 300 mm stroke invites rod bending, ensure external guides handle side loads. The adjust stop sets end position and does not hold loads on air loss; for load holding use SAIL, BSAI, or an external rod lock.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X300-30S
- ✓ 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 SIJ80X300-30S FAQ
Yes, the SIJ80X300-30S is discontinued. The exact drop-in replacement is the SAIJ80X300-30S, offering the same ISO 15552 interface, 80 mm bore, 300 mm stroke, 30 mm adjust window, and G3/8 port. The SAIJ uses an upgraded two Y-shaped one-way piston seal for 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 external stop screw window is 30 mm, allowing the extend stroke to be shortened from 300 mm down to 270 mm. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
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