This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X90-20 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X90-20 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 SIJ80X90-20
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X90-20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 90mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X90-20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke90 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X90-20
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X90-20
The AirTAC SIJ80X90-20 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, giving a usable 70-90 mm window from the 90 mm nominal maximum. The 80 mm bore uses a G3/8 port, a Ø25 mm rod, and 36 mm adjustable cushions. This SKU has no -S magnet and cannot accept a sensor.
The exact drop-in replacement is the SAIJ80X90-20, retaining the same interface, 2513 N push / 2268 N pull at 0.5 MPa, and mounting. The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. For sizing, the safe working load is roughly 1508 N (60% of the 0.5 MPa push), yielding a 128 kg vertical lift with a 2:1 margin. The stop sets end position only; it is not a lock, so use an external rod lock for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X90-20 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X90-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X90-20 |
| Bore size | Ø80 mm |
| Stroke | 90 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 SAIJ80X90-20 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 SAIJ80X90-20 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 SIJ80X90-20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×90 | 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 SIJ80X90-20 Is Used
Variable Stroke Clamping
Adjusts the extend stop on-site for parts of varying heights, ensuring consistent 2513 N clamping force without re-plumbing the G3/8 air lines.
Transfer Pusher Tuning
Dials in the 70-90 mm extend window to deflect items accurately onto diverging conveyor lanes, using the external screw to fine-tune the end position.
Packaging Positioning
Trims the extend stroke by up to 20 mm to adapt to different carton depths on the fly, relying on the 36 mm cushions to decelerate the load smoothly.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X90-20 with the SAIJ80X90-20
To replace the discontinued SIJ80X90-20, order the SAIJ80X90-20 drop-in, reusing your FA, LB, or TC mounts. Size both ways: the 63 mm neighbor yields 1559 N push at 0.5 MPa, while the 100 mm bore gives 3927 N. This 80 mm bore provides 2513 N push and 2268 N pull at 0.5 MPa, with a 4523 N push at 0.9 MPa. The 20 mm adjust window sets the extend end position (70-90 mm) but is not a load lock. Without a -S magnet, this SKU cannot take a switch. For any stroke over 300 mm, verify side-load limits to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X90-20
- ✓ 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 SIJ80X90-20 FAQ
Yes, the SIJ80X90-20 is discontinued. The exact drop-in replacement is the SAIJ80X90-20, which shares the identical ISO 15552 interface, 90 mm stroke, 20 mm adjust window, G3/8 port, and mounting. The SAIJ family also adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The 80 mm bore delivers 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 provides a 20 mm adjust window, allowing the extend stroke to be shortened from the 90 mm nominal maximum down to 70 mm. The stop sets end position only; it does not lock the load, so use an external rod lock for holding.
Related AirTAC SAI Cylinders
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