This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X40-30S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X40-30S 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 SIJ80X40-30S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X40-30S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 40mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X40-30S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke40 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X40-30S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X40-30S
The AirTAC SIJ80X40-30S is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder with a 40 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 30 mm on-site, yielding a usable 10-40 mm window. This 80 mm bore features 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. The exact drop-in replacement is the SAIJ80X40-30S, sharing the same interface, force, and adjustability.
The SAIJ successor retains the ISO 15552 mounting footprint and adds an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. Computed buyer insight: using the 2513 N push figure, the safe working load is roughly 1508 N (60% margin), translating to a 128 kg vertical lift with a 2:1 safety factor. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. Remember the stop screw sets end position only; it is not a load lock, so use an external rod lock or SAIL variant for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X40-30S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X40-30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X40-30S |
| Bore size | Ø80 mm |
| Stroke | 40 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 SAIJ80X40-30S 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 SAIJ80X40-30S 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 SIJ80X40-30S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×40 | 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 SIJ80X40-30S Is Used
Short-Stroke Clamping
Ideal for clamping varied part thicknesses where the extend stroke must be precisely tuned on-site within the 10-40 mm window to avoid over-travel.
Transfer Diverter
Provides adjustable diverting pressure on packaging lines, allowing operators to shorten the stroke by up to 30 mm to accommodate different product sizes.
Light Pressing
Useful for pressing bearings or pins where the exact bottoming position varies, utilizing the external stop screw to set a hard, repeatable end position.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X40-30S with the SAIJ80X40-30S
To replace the discontinued SIJ80X40-30S, specify the SAIJ80X40-30S directly—matching the 80 mm bore, 40 mm nominal stroke, 30 mm adjust window, G3/8 port, and -S magnet. When sizing both ways, the neighboring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore provides 3927 N push at 0.5 MPa. Select the 30 mm adjust window if your application requires field-tuning the extend stroke down to a 10 mm minimum. Mounting options include Basic, FA, LB, and TC brackets. Because the nominal stroke is under 300 mm, side-load risks are minimal. Note that the -S magnet supports legacy CS1-B/DS1-B sensors; the SAIJ replacement uses current AirTAC switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X40-30S
- ✓ 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 SIJ80X40-30S FAQ
Yes, the SIJ80X40-30S is discontinued. The exact drop-in replacement is the SAIJ80X40-30S, which shares the same ISO 15552 interface, 80 mm bore, 40 mm stroke, 30 mm adjust window, G3/8 port, and mounting options.
The 80 mm bore delivers 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 nominal 40 mm extend stroke can be shortened by up to 30 mm on-site via the external stop screw, yielding a 10-40 mm usable window. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X40-30S
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