This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X400-40 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X400-40 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 SIJ80X400-40
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-40 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 SAIJ80X400-40, 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 → SAIJ80X400-40
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-40
The AirTAC SIJ80X400-40 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 40 mm on-site, giving a usable 360-400 mm window from the 400 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, and 3518 N push at 0.7 MPa.
The exact drop-in replacement is the SAIJ80X400-40, matching the ISO 15552 mounting interface, bore, and force. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. Computed buyer insight: safe working load is ~1508 N (60% of the 2513 N push at 0.5 MPa), yielding a ~128 kg vertical lift with a 2:1 margin. The stop screw sets end position but is not a load lock; use an external rod lock for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-40 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X400-40 |
| 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 SAIJ80X400-40 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 SAIJ80X400-40 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 SIJ80X400-40
| 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 SIJ80X400-40 Is Used
Variable-depth Forming Press
Needs field stroke tuning to set precise 360-400 mm bottom-dead-center positions for different material batches without swapping the entire actuator.
Adjustable Package Diverter
Requires trimming the extend stroke by up to 40 mm on-site to accommodate changing box widths on the line while maintaining ISO 15552 mount compatibility.
Tiered Pallet Stopper
Uses the external stop screw to dial in exact 360-400 mm stopping points for varying pallet heights, ensuring positive end positioning without re-engineering fixtures.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-40 with the SAIJ80X400-40
To replace the discontinued SIJ80X400-40, specify SAIJ80X400-40 to retain the identical ISO 15552 interface, 400 mm nominal stroke, and 40 mm adjust window. 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 push at 0.5 MPa. Choose the 40 mm adjust window if your extend stroke needs on-site tuning between 360 and 400 mm. Reuse FA, LB, or TC mounts. This SKU has no -S magnet and cannot take a magnetic switch. For the 400 mm stroke, verify side-load limits and use external guides to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X400-40
- ✓ 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 SIJ80X400-40 FAQ
Yes, the SIJ80X400-40 is discontinued. The exact drop-in replacement is the SAIJ80X400-40, which matches the ISO 15552 interface, 400 mm stroke, 40 mm adjust window, and G3/8 port. The SAIJ family adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure and longer life.
The 80 mm bore provides 2513 N push and 2268 N pull at 0.5 MPa, 3518 N push at 0.7 MPa, 4523 N push at 0.9 MPa, and a 513 kgf max at 1.0 MPa. The external stop screw shortens the extend stroke by up to 40 mm on-site (usable 360-400 mm). The stop sets end position but is not a load lock; for held loads use an external rod lock.
Related AirTAC SAI Cylinders
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