This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X750-40 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X750-40 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 SIJ80X750-40
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X750-40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 750mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X750-40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke750 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X750-40
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X750-40
The AirTAC SIJ80X750-40 is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder with a 750 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, yielding a usable 710-750 mm window. The 80 mm bore uses a G3/8 port, a 25 mm rod, and 36 mm adjustable cushions. It delivers 2513 N push and 2268 N pull at 0.5 MPa, reaching 4523 N at 0.9 MPa.
The exact drop-in replacement is the SAIJ80X750-40, retaining the same interface, force, and porting. The SAIJ upgrade introduces 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), translating to a 128 kg vertical lift with a 2:1 margin. Note this non-magnetic SKU cannot take a switch, and the stop screw sets end position only—it is not a load lock.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X750-40 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X750-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X750-40 |
| Bore size | Ø80 mm |
| Stroke | 750 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 SAIJ80X750-40 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 SAIJ80X750-40 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 SIJ80X750-40
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×750 | 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 SIJ80X750-40 Is Used
Variable Press Stroke
Trimming the extend stroke by up to 40 mm on-site allows precise positioning of a press head without machining a new stop, accommodating material thickness variations.
Adjustable Diverter Arm
A 710 to 750 mm extend window lets maintenance tune a conveyor diverter gate to match package sizes, using the G3/8 port and ISO 15552 mounts for easy retrofit.
Custom Length Packaging Flap
Folding carton flaps of varying heights is simplified by adjusting the external stop screw on the 80 mm bore cylinder, ensuring consistent contact without reprogramming.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X750-40 with the SAIJ80X750-40
To replace the discontinued SIJ80X750-40, order the drop-in SAIJ80X750-40, which preserves the 80 mm bore, 750 mm stroke, 40 mm adjust window, G3/8 port, and FA/LB/TC mountings. Size both ways using 0.5 MPa forces: the 63 mm bore yields 1559 N push, while the 100 mm bore yields 3927 N push. Choose the 40 mm adjust window if you need 710-750 mm of extend travel. This SKU lacks the -S magnet and cannot support a sensor. For the 750 mm stroke, use external guides to prevent rod bending and side-load damage. The stop screw sets end position but does not hold loads on air loss; for load holding use an external rod lock or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X750-40
- ✓ 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 SIJ80X750-40 FAQ
Yes, the SIJ80X750-40 is discontinued. The exact drop-in replacement is the SAIJ80X750-40, which shares the same ISO 15552 interface, 80 mm bore, 750 mm stroke, 40 mm adjust window, and G3/8 port. The SAIJ family also adds an upgraded two Y-shaped one-way piston seal for longer life.
The 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N at 0.7 MPa, and 4523 N at 0.9 MPa. The external stop screw provides a 40 mm trim window, making the usable extend stroke 710-750 mm. The stop sets end position only; it is not a load lock, so use an external rod lock for held loads.
Related AirTAC SAI Cylinders
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