This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X400-30 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X400-30 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 SIJ80X400-30
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 400mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X400-30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke400 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X400-30
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-30
The AirTAC SIJ80X400-30 is a double-acting single-rod ISO 15552 adjustable-stroke cylinder, discontinued and replaced directly by the SAIJ80X400-30. An external stop screw lets you trim the extend stroke by up to 30 mm on-site, giving a usable 370-400 mm extension out of the 400 mm nominal maximum. This 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa, peaking at 4523 N at 0.9 MPa. The G3/8 port and 36 mm adjustable cushions ensure controlled deceleration.
The SAIJ drop-in retains the exact ISO 15552 mounting interface, bore, and force. Upgrades include a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Based on the 0.5 MPa push force, the safe working load is roughly 1508 N (60%), translating to a 128 kg vertical lift with a 2:1 margin. Remember the stop screw sets end position but is not a load lock; drift occurs on air loss.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-30 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X400-30 |
| Bore size | Ø80 mm |
| Stroke | 400 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 SAIJ80X400-30 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 SAIJ80X400-30 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 SIJ80X400-30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×400 | 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 SIJ80X400-30 Is Used
Press Fit Tuning
Adjust the 30 mm extend window on-site to dial in precise press-fit depths for bearings without swapping cylinders.
Variable Length Diverter
Trim the extend stroke to accommodate changing package sizes on a sorting line, ensuring accurate physical diversion.
Adjustable End Stop
Set a custom mechanical end position for pallets or racks where the exact stopping distance requires field calibration.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-30 with the SAIJ80X400-30
To replace the discontinued SIJ80X400-30, order the drop-in SAIJ80X400-30, reusing your existing FA, LB, or TC mounts. To resize, neighboring bores offer distinct 0.5 MPa forces: the 63 mm gives 1559 N push, while the 100 mm yields 3927 N. The 30 mm adjust window is ideal for fine-tuning the 370-400 mm extend stroke. Because this SKU lacks the -S suffix, it has no magnet and cannot accept a magnetic switch. Finally, at 400 mm stroke, mind rod-bending and side-load forces by incorporating external guides to prevent premature wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X400-30
- ✓ 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 SIJ80X400-30 FAQ
Yes, the SIJ80X400-30 is discontinued. The exact drop-in replacement is the SAIJ80X400-30, matching the ISO 15552 interface, 400 mm stroke, 30 mm adjust window, and G3/8 port.
It 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 trims the extend stroke by up to 30 mm (usable 370-400 mm). Note the stop sets position but does not lock the load.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X400-30
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