This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X900-50S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X900-50S 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 SIJ80X900-50S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 900mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X900-50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke900 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X900-50S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-50S
The AirTAC SIJ80X900-50S is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder. Its external stop screw lets you trim the extend stroke by up to 50 mm on-site, yielding a usable 850-900 mm stroke (900 mm nominal maximum). The 80 mm bore features a Ø25 mm rod, M20x1.5 thread, 36 mm adjustable cushions, G3/8 port, and 30-800 mm/s speed. It delivers 2513 N push and 2268 N pull at 0.5 MPa. As an end-of-life product, the exact drop-in replacement is the SAIJ80X900-50S, sharing the same ISO 15552 interface, force, and mounting.
The SAIJ successor incorporates an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. For sizing, a computed buyer insight from the 0.5 MPa push force yields a safe working load of roughly 1508 N (60% of 2513 N), or a 128 kg vertical lift with a 2:1 margin. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B sensors. Note that the external stop sets end position but is not a load lock; cylinders drift on air loss, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-50S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X900-50S |
| Bore size | Ø80 mm |
| Stroke | 900 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 SAIJ80X900-50S 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 SAIJ80X900-50S 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 SIJ80X900-50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×900 | 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 SIJ80X900-50S Is Used
Variable-Length Part Ejection
Tuning the extend stroke by up to 50 mm on-site allows a single 900 mm cylinder to eject parts of varying lengths without swapping the entire actuator.
Adjustable Transfer Pusher
An external stop screw trims the extend position to 850 mm for aligning different pallet sizes on a conveyor line, providing precise end-positioning without reprogramming.
Variable-Depth Palletizing
Field-tuning the extend stroke accommodates variable pallet depths, ensuring the 80 mm bore delivers its 2513 N push force exactly where needed without mechanical stops.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X900-50S with the SAIJ80X900-50S
To replace the discontinued SIJ80X900-50S, map directly to the SAIJ80X900-50S by inserting an A after the leading S, retaining the 80 mm bore, 900 mm stroke, 50 mm adjust window, and -S magnet. When sizing both ways, the neighboring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N; the 80 mm bore provides 2513 N push and 2268 N pull at 0.5 MPa. Choose the 50 mm adjust window if your process requires on-site stroke tuning between 850 and 900 mm. Mounting options include FA, LB, and TC brackets. The -S magnet enables position sensing. Because the 900 mm stroke exceeds 300 mm, verify side-load limits and use external guides to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X900-50S
- ✓ 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 SIJ80X900-50S FAQ
Yes, the SIJ80X900-50S is discontinued. The exact drop-in replacement is the SAIJ80X900-50S. It shares the same ISO 15552 interface, 80 mm bore, 900 mm stroke, 50 mm adjust window, G3/8 port, and mounting options, but adds an upgraded piston seal.
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, with a theoretical max of 513 kgf at 1.0 MPa. The external stop screw allows you to trim the extend stroke by up to 50 mm on-site, yielding a usable stroke of 850-900 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
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