This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X400-30S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X400-30S 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 SIJ80X400-30S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-30S 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 SAIJ80X400-30S, 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 → SAIJ80X400-30S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-30S
The AirTAC SIJ80X400-30S is a double-acting single-rod ISO 15552 adjustable-stroke cylinder, now discontinued and superseded by the SAIJ80X400-30S. It features an 80 mm bore, G3/8 port, and a 400 mm nominal stroke that can be shortened on-site by up to 30 mm via an external stop screw, yielding a usable extend range of 370-400 mm. The stop screw sets the end position but is not a load lock. Force output matches standard single-rod SAI figures: 2513 N push and 2268 N pull at 0.5 MPa, peaking at 4523 N push at 0.9 MPa.
The SAIJ drop-in replacement retains the exact ISO 15552 mounting interface, 25 mm rod, M20x1.5 thread, and 36 mm cushions, while upgrading to a two Y-shaped one-way piston seal for lower start-up pressure and longer life. The -S suffix denotes a built-in piston magnet for legacy CS1-B/DS1-B switches. For sizing, a safe working load is roughly 1508 N (60% of the 0.5 MPa push), equating to a 128 kg vertical lift with a 2:1 margin. Note that plain cylinders drift on air loss; for held loads use SAIL/BSAI lock variants or external checks.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-30S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X400-30S |
| 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 SAIJ80X400-30S 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 SAIJ80X400-30S 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 SIJ80X400-30S
| 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 SIJ80X400-30S Is Used
Variable Stroke Clamping
Ideal for clamping stations where the material thickness varies, using the 30 mm on-site stop screw to tune the 400 mm extend stroke precisely without re-plumbing the G3/8 air lines.
Adjustable Transfer Pusher
Deployed on conveyor diverter arms to push varying package sizes, allowing operators to shorten the extend stroke by up to 30 mm to accommodate different carton depths on the fly.
Tiered Pallet Positioning
Used in pallet handling to engage different pallet heights, setting the external stop to trim the extend stroke for precise placement without needing multiple fixed-stroke cylinders.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X400-30S with the SAIJ80X400-30S
To replace the discontinued SIJ80X400-30S, order the exact drop-in SAIJ80X400-30S, which preserves the 80 mm bore, 400 mm stroke, 30 mm adjust window, G3/8 port, and ISO 15552 mounting. If resizing, the neighboring 63 mm bore yields 2182 N push at 0.7 MPa, while the 100 mm bore yields 5497 N push at 0.7 MPa. Select the 30 mm adjust window if your extend stroke needs field tuning between 370-400 mm. Mounting options include Basic, FA, LB, and TC. The -S suffix ensures piston magnet compatibility for position sensing. Because the 400 mm stroke exceeds 300 mm, account for rod-bending moments and provide external guides to manage side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X400-30S
- ✓ 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 SIJ80X400-30S FAQ
Yes, the SIJ80X400-30S is discontinued. The exact drop-in replacement is the SAIJ80X400-30S. It shares the same ISO 15552 interface, 80 mm bore, 400 mm stroke, 30 mm adjust window, G3/8 port, and mounting options, but features an upgraded two Y-shaped one-way piston seal for longer life.
The 80 mm bore double-acting single-rod cylinder 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 external stop screw provides a 30 mm adjust window, allowing the 400 mm extend stroke to be shortened on-site to a minimum of 370 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
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