This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X300-50 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X300-50 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 SIJ80X300-50
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-50 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 SAIJ80X300-50, 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 → SAIJ80X300-50
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-50
The AirTAC SIJ80X300-50 is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder. The nominal 300mm extend stroke is the maximum, and an external stop screw lets you trim the extend stroke by up to 50mm on-site, yielding a usable 250-300mm window. The stop sets the end position but is not a load lock. This 80mm bore uses a G3/8 port, a 25mm rod, and delivers 2513N push / 2268N pull at 0.5MPa.
The exact drop-in replacement is the SAIJ80X300-50, matching the interface, force, and mounting. The SAIJ family introduces an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. For sizing, a safe working load is roughly 1508N (60% of the 0.5MPa push force), translating to a 128kg vertical lift with a 2:1 margin. Note this SKU lacks a magnet (-S), so it cannot take a switch.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-50 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X300-50 |
| 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 SAIJ80X300-50 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 SAIJ80X300-50 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 SIJ80X300-50
| 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 SIJ80X300-50 Is Used
Variable Depth Drilling
Adjustable extend stop allows precise depth tuning for drilling heads across material batches without reprogramming fixed stroke limits.
Variable Height Sealing
On-site stroke trimming accommodates different carton heights on a packaging line, letting the cylinder adapt to varying box profiles.
Adjustable Pusher Stops
External stop screw sets exact ejection positions for diverting mixed-size pallets, ensuring correct end-of-stroke placement.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X300-50 with the SAIJ80X300-50
To replace this discontinued model, specify SAIJ80X300-50 for an exact drop-in match. If resizing, the neighboring bores are 63mm and 100mm; at 0.5MPa the 63mm yields 1559N push while the 100mm yields 3927N push. Choose the 50mm adjust window if you need to trim the extend stroke on-site from the 300mm maximum down to 250mm. Mounting interfaces include Basic, FA, LB, and TC. Because this SKU lacks the -S magnet, it cannot accept legacy CS1-B/DS1-B sensors. For the 300mm stroke, use external guides to prevent rod bending and manage side loads. The stop screw sets end position only; for load holding on air loss, use an external rod lock or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X300-50
- ✓ 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 SIJ80X300-50 FAQ
Yes, the SIJ80X300-50 is discontinued. The exact drop-in replacement is the SAIJ80X300-50, which shares the identical ISO 15552 interface, 80mm bore, 300mm stroke, 50mm adjust window, G3/8 port, and mounting options. The SAIJ upgrade features a two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The 80mm bore provides 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, 4523N push at 0.9MPa, and a theoretical max of 513kgf at 1.0MPa. The external stop screw provides a 50mm adjust window, allowing you to shorten the extend stroke from the 300mm maximum down to 250mm. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
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