This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X450-40S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X450-40S 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 SIJ80X450-40S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 450mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X450-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke450 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X450-40S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-40S
The AirTAC SIJ80X450-40S 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 40 mm on-site, yielding a usable 410-450 mm window from the 450 mm nominal maximum. The 80 mm bore uses a G3/8 port, M20x1.5 rod thread, 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 SAIJ80X450-40S, matching the interface, force, and port. The SAIJ family uses an upgraded 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), equating to a 128 kg vertical lift with a 2:1 margin. The stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-40S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X450-40S |
| Bore size | Ø80 mm |
| Stroke | 450 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 SAIJ80X450-40S 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 SAIJ80X450-40S 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 SIJ80X450-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×450 | 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 SIJ80X450-40S Is Used
Variable-depth machining clamps
Adjusts the extend stroke on-site by up to 40 mm to seat parts of varying heights without repositioning the cylinder body.
Adjustable transfer diverters
Tunes the extend end-position to deflect different package widths on a packaging line, ensuring precise routing.
Tiered pallet stops
Shortens the extend stroke dynamically to accommodate varying pallet load depths while maintaining a rigid external stop.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X450-40S with the SAIJ80X450-40S
To replace the discontinued SIJ80X450-40S, order the drop-in SAIJ80X450-40S, reusing your existing ISO 15552 FA, LB, or TC mounts. The 40 mm adjust window is ideal if your end-position target varies by up to 40 mm, saving the need to machine a fixed external stop. If you need more force, the neighbouring 100 mm bore provides 3927 N push at 0.5 MPa; if less force is acceptable, the 63 mm bore provides 1559 N. The -S suffix means a piston magnet is present for legacy CS1-B/DS1-B sensors. Because the 450 mm stroke is long, verify side-load conditions and use external guides to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X450-40S
- ✓ 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 SIJ80X450-40S FAQ
Yes, the SIJ80X450-40S is discontinued. The exact drop-in replacement is the SAIJ80X450-40S. It shares the same ISO 15552 interface, 80 mm bore, 450 mm stroke, 40 mm adjust window, G3/8 port, and mounting dimensions, but features an upgraded piston seal.
The 80 mm bore provides 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 allows you to trim the extend stroke by up to 40 mm on-site, giving a usable stroke of 410-450 mm. Note the stop sets position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X450-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X450-40S replacement — usually within 7-8 hours.