This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X75-20S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X75-20S 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 SIJ80X75-20S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 75mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X75-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X75-20S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-20S
The AirTAC SIJ80X75-20S 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 20mm on-site, yielding a usable 55-75mm extension window from the 75mm nominal maximum. The 80mm bore features a G3/8 port, M20x1.5 rod thread, and 36mm adjustable cushions. This SIJ model is replaced by the drop-in SAIJ80X75-20S, sharing the exact interface, magnet, and 4523N push force at 0.9MPa.
The SAIJ successor introduces an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. For sizing, the 2513N push force at 0.5MPa yields a safe working load of roughly 1508N, or a 128kg vertical lift with a 2:1 margin. Remember the stop screw sets end position only; it is not a load lock, so use SAIL or BSAI variants for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-20S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X75-20S |
| Bore size | Ø80 mm |
| Stroke | 75 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 SAIJ80X75-20S 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 SAIJ80X75-20S 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 SIJ80X75-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×75 | 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 SIJ80X75-20S Is Used
Press Fit Tuning
Adjusts the extend stroke on-site to set precise pressing depths for bearing insertion without swapping cylinders.
Diverter Gate Positioning
Trims the actuation length to accommodate varying package sizes on a sorting line for accurate routing.
Sealing Head Calibration
Dials in the exact extend position for packaging flaps, compensating for material thickness variations.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X75-20S with the SAIJ80X75-20S
To replace the discontinued SIJ80X75-20S, specify SAIJ80X75-20S to retain the G3/8 port, 75mm nominal stroke, and 20mm adjust window. If sizing down, the 63mm bore yields 1559N push at 0.5MPa; sizing up, the 100mm bore yields 3927N. Choose the 20mm adjust window when you need on-site tuning of the extend stroke from 55 to 75mm. Mounting interfaces include FA, LB, and TC. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches; the SAIJ replacement uses current AirTAC switches. For strokes over 300mm, verify side-load limits to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X75-20S
- ✓ 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 SIJ80X75-20S FAQ
Yes, the SIJ80X75-20S is discontinued. The exact drop-in replacement is the SAIJ80X75-20S. It shares the ISO 15552 interface, 80mm bore, 75mm stroke, 20mm adjust window, and G3/8 port. The SAIJ adds an upgraded piston seal for longer life.
The 80mm bore delivers 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, and 4523N push at 0.9MPa. The external stop screw provides a 20mm adjustment window, allowing the extend stroke to be shortened from the 75mm maximum down to 55mm. The stop sets position only and does not lock the load.
Related AirTAC SAI Cylinders
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