This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X250-75 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X250-75 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 SIJ80X250-75
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-75 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 250mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X250-75, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke250 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X250-75
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-75
The AirTAC SIJ80X250-75 is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 75 mm on-site, giving a usable 175-250 mm window from the 250 mm nominal maximum. This 80 mm bore uses a G3/8 port, a 25 mm rod, and 36 mm adjustable cushions. Because it is end-of-life, the exact drop-in replacement is the SAIJ80X250-75, matching the interface, force, and mounting.
Force output is 2513 N push and 2268 N pull at 0.5 MPa, reaching 4523 N at 0.9 MPa. The SAIJ upgrade uses an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. A computed buyer insight: safe working load is about 1508 N (60% of the 0.5 MPa push), allowing a 128 kg vertical lift with a 2:1 margin. The stop sets end position only; it is not a load lock.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-75 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X250-75 |
| Bore size | Ø80 mm |
| Stroke | 250 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 SAIJ80X250-75 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 SAIJ80X250-75 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 SIJ80X250-75
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×250 | 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 SIJ80X250-75 Is Used
Variable Depth Forming
Adjust the extend stroke on-site to press parts to different depths without changing the entire cylinder setup.
Adjustable Transfer Stops
Trim the extend stroke by up to 75 mm to act as a transfer stop for varying package sizes on a single line.
Variable Position Diverters
Tune the extend stroke on-site to divert items at different distances without needing multiple actuators.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-75 with the SAIJ80X250-75
To replace this discontinued SIJ80X250-75, order the SAIJ80X250-75 drop-in. It retains the exact ISO 15552 mounting interface and 75 mm adjust window. When sizing both ways, 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. Choose the 75 mm adjust window if you need to trim the extend stroke on-site by up to 75 mm. Mounting options include Basic, FA, LB, and TC. This SKU has no -S suffix, so it cannot take a magnetic switch. For stroke lengths of 300 mm or more, verify side-load limits to prevent rod binding. The stop screw sets end position but is not a lock; for held loads use an external rod lock or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X250-75
- ✓ 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 SIJ80X250-75 FAQ
Yes, the SIJ80X250-75 is discontinued. The exact drop-in replacement is the SAIJ80X250-75, which shares the same ISO 15552 interface, 80 mm bore, 250 mm stroke, 75 mm adjust window, G3/8 port, and mounting.
The double-acting single-rod SIJ80X250-75 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 window is 75 mm, allowing the extend stroke to be shortened on-site from 250 mm down to 175 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
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