This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X250-75S — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X250-75S 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 SIJ80X250-75S
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-75S 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 SAIJ80X250-75S, 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 → SAIJ80X250-75S
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-75S
The AirTAC SIJ80X250-75S is a double-acting single-rod ISO 15552 adjustable-stroke cylinder, now officially discontinued. An external stop screw allows you to trim the extend stroke by up to 75 mm on-site, giving a usable 175-250 mm extension out of the 250 mm nominal maximum. The 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa, utilizing a G3/8 port and a 25 mm piston rod. The exact drop-in replacement is the SAIJ80X250-75S, sharing the identical interface, force, and mounting.
The stop screw sets the end position but is not a load lock; without live air the piston drifts and cushions only decelerate near stroke end. For secure load holding, an external rod lock or pilot-operated check valve is required. The SAIJ replacement upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Computed buyer insight: safe working load is roughly 1508 N (60% of the 0.5 MPa push), yielding a 128 kg vertical lift capacity with a 2:1 margin.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-75S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X250-75S |
| 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 SAIJ80X250-75S 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 SAIJ80X250-75S 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 SIJ80X250-75S
| 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 SIJ80X250-75S Is Used
Variable Depth Forming Press
Requires field tuning of the extend stroke within the 75 mm window to accommodate different material thicknesses without changing the entire cylinder setup.
Adjustable Package Diverters
Needs precise on-site stroke trimming to handle varying carton sizes on the fly, using the 80 mm bore's 2513 N push force to reliably push parcels.
Multi-Position Pallet Stops
Utilizes the 175-250 mm usable stroke range to create multiple physical stopping points for pallets of varying footprints on a single line.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-75S with the SAIJ80X250-75S
To replace the discontinued SIJ80X250-75S, order the drop-in SAIJ80X250-75S, retaining the 80 mm bore, 250 mm max stroke, 75 mm adjust window, G3/8 port, and -S magnet for legacy CS1-B/DS1-B switches. When sizing both ways, the neighboring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore yields 3927 N push; choose based on your 1508 N safe working load requirement. Select the 75 mm adjust window if your process demands field tuning between 175 mm and 250 mm. Mounting reuse includes Basic, FA, LB, and TC ISO 15552 interfaces. For stroke lengths >=300 mm, verify the side-load limits to prevent rod binding. The SAIJ family also offers the SAIL air-released lock and BSAI clamp-lock variants if true load holding is needed.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X250-75S
- ✓ 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 SIJ80X250-75S FAQ
Yes, the SIJ80X250-75S is discontinued. The exact drop-in replacement is the SAIJ80X250-75S. It shares the same ISO 15552 interface, 80 mm bore, 250 mm stroke, 75 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 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, with a theoretical max of 513 kgf at 1.0 MPa. The nominal 250 mm stroke is the maximum; the external stop screw allows you to trim the extend stroke by up to 75 mm on-site, yielding a usable 175-250 mm range. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
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