This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X350-40S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X350-40S 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 SIJ80X350-40S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 350mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X350-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke350 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X350-40S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-40S
The AirTAC SIJ80X350-40S is a double-acting single-rod ISO 15552 adjustable-stroke cylinder, now discontinued and replaced by the SAIJ80X350-40S. An external stop screw lets you trim the extend stroke by up to 40mm on-site, giving a usable 310-350mm extension out of the 350mm nominal maximum. The 80mm bore uses a G3/8 port, M20x1.5 rod thread, and 36mm adjustable cushions, delivering 2513N push and 2268N pull at 0.5MPa.
The SAIJ drop-in retains the exact ISO 15552 mounting interface, bore, and force, while upgrading to a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Based on the 0.5MPa push force, the safe working load is roughly 1508N (60%), translating to a 128kg vertical lift with a 2:1 margin. The stop screw sets end position only; it is not a lock, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-40S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X350-40S |
| Bore size | Ø80 mm |
| Stroke | 350 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 SAIJ80X350-40S 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 SAIJ80X350-40S 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 SIJ80X350-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×350 | 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 SIJ80X350-40S Is Used
Press Fit Tuning
Trimming the extend stroke by up to 40mm on-site allows precise positioning of press fit pins without machining spacers.
Divert Arm Adjustment
Field-tuning the 350mm extension lets operators alter the divert reach on a conveyor belt to handle varying package widths.
Pallet Stop Positioning
The external stop screw adjusts the end position to accommodate different pallet depths without changing the cylinder mount.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X350-40S with the SAIJ80X350-40S
To replace the discontinued SIJ80X350-40S, order the drop-in SAIJ80X350-40S, which preserves the 350mm stroke, 40mm adjust window, G3/8 port, and ISO 15552 mounting. When sizing both ways, the neighboring 63mm bore yields 1559N push at 0.5MPa, while the 100mm bore yields 3927N push. The 40mm adjust window is ideal for fine-tuning the extend endpoint without machining. Reuse FA, LB, or TC mounts directly. The -S suffix provides a piston magnet for legacy CS1-B/DS1-B switches (the SAIJ uses current switches). For the 350mm stroke, ensure external guides to prevent rod bending and manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X350-40S
- ✓ 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 SIJ80X350-40S FAQ
Yes, the SIJ80X350-40S is discontinued. The exact drop-in replacement is the SAIJ80X350-40S, offering the same ISO 15552 interface, 80mm bore, 350mm stroke, 40mm adjust window, G3/8 port, and force ratings.
The 80mm bore provides 2513N push and 2268N pull at 0.5MPa, 3518N push at 0.7MPa, and 4523N push at 0.9MPa, with a 513kgf max at 1.0MPa. The external stop screw window is 40mm, allowing the extend stroke to be shortened from the 350mm maximum down to 310mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
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