This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X500-40S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X500-40S 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 SIJ80X500-40S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 500mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X500-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X500-40S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-40S
The AirTAC SIJ80X500-40S is a 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, giving a usable 460-500 mm forward travel out of the 500 mm nominal maximum. The 80 mm bore yields 2513 N push and 2268 N pull at 0.5 MPa, peaking at 4523 N push at 0.9 MPa. This SIJ model is discontinued; the exact drop-in replacement is the SAIJ80X500-40S, matching the G3/8 port, M20x1.5 rod thread, and 36 mm adjustable cushions.
The SAIJ successor retains the ISO 15552 mounting interface for direct reuse of FA, LB, and TC brackets. It upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. For sizing, a safe working load is roughly 1508 N (about 60% of the 2513 N @0.5 MPa figure), translating to a 128 kg vertical lift with a 2:1 margin. The stop screw sets end position only; it is not a lock. For load holding on air loss, use an external rod lock or the SAIL/BSAI variants.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-40S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X500-40S |
| Bore size | Ø80 mm |
| Stroke | 500 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 SAIJ80X500-40S 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 SAIJ80X500-40S 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 SIJ80X500-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×500 | 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 SIJ80X500-40S Is Used
Variable Depth Boring
Trimming the 500 mm extend stroke by up to 40 mm on-site to hit exact boring depths in multi-spec machining fixtures without swapping cylinders.
Adjustable Transfer Stops
Tuning the end position of a 80 mm bore stopper gate on a conveyor to handle varying package sizes, using the external screw for quick field calibration.
Custom Height Indexing
Dialing in the extend length within the 460-500 mm window for vertical indexing pins in a storage retrieval system where rack heights vary slightly.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-40S with the SAIJ80X500-40S
To replace the discontinued SIJ80X500-40S, order the drop-in SAIJ80X500-40S, keeping the 500 mm maximum stroke, 40 mm adjust window, and -S magnet for CS1-B/DS1-B switches. When sizing both ways, the neighboring 63 mm bore provides 2182 N push at 0.7 MPa, while the 100 mm bore offers 5497 N push at 0.7 MPa. Select the 40 mm adjust window if your target extend position needs on-site tuning between 460 and 500 mm. Reuse your existing FA, LB, or TC ISO 15552 mounts. Because the 500 mm stroke is long, account for side-load and rod-bending by adding external guides to prevent premature seal wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X500-40S
- ✓ 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 SIJ80X500-40S FAQ
Yes, the SIJ80X500-40S is discontinued. The exact drop-in replacement is the SAIJ80X500-40S. It shares the same ISO 15552 interface, 80 mm bore, 500 mm stroke, 40 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. The external stop screw window is 40 mm, allowing you to shorten the extend stroke on-site from the 500 mm maximum down to 460 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
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