This model is discontinued
AirTAC has phased out the MAL series. The drop-in replacement is SAIJ80X125-20 — same bore, stroke, output force, port and mounting, so it fits the same application. Simply order the SAIJ80X125-20 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 SIJ80X125-20
The AirTAC Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 125mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the drop-in replacement is the SAIJ80X125-20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke125 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X125-20
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-20
The AirTAC SIJ80X125-20 is a discontinued double-acting single-rod ISO 15552 adjustable-stroke cylinder with an 80 mm bore and 125 mm maximum extend stroke. An external stop screw allows you to trim the extend stroke on-site by up to 20 mm, yielding a usable 105-125 mm range. The G3/8 port and 36 mm adjustable cushions govern a 30-800 mm/s speed range. As an end-of-life product, the exact drop-in replacement is the SAIJ80X125-20, retaining the same interface, 25 mm rod, M20x1.5 thread, and force characteristics.
Force output for this bore is substantial: 2513 N push and 2268 N pull at 0.5 MPa, scaling to 4523 N at 0.9 MPa. For sizing, a safe working load is roughly 1508 N (60% of the 0.5 MPa push), translating to a 128 kg vertical lift with a 2:1 margin. The SAIJ successor incorporates an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. Because this SKU lacks a -S magnet, it cannot accept legacy CS1-B/DS1-B switches. Note that the stop screw sets end position only; it is not a load lock, and the cylinder will drift without live air.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-20 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X125-20 |
| Bore size | Ø80 mm |
| Stroke | 125 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 SAIJ80X125-20 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 SAIJ80X125-20 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 SIJ80X125-20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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 SIJ80X125-20 Is Used
Press Fit Tuning
An assembly station uses the 20 mm adjust window to dial in the exact 115 mm extend position for pressing bearings, compensating for fixture variations on-site.
Diverter Gate Positioning
A packaging line relies on the 80 mm bore's 2513 N push at 0.5 MPa to actuate a diverter, trimming the stroke to match varying box sizes without re-mounting.
Pallet Stop Adjustment
A conveyor end-stop uses the 4523 N push force at 0.9 MPa to halt pallets, with the external screw allowing quick 5-10 mm retraction for different pallet depths.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X125-20 with the SAIJ80X125-20
To replace the discontinued SIJ80X125-20, order the drop-in SAIJ80X125-20, ensuring you reuse your existing FA, LB, or TC ISO 15552 mounts. When sizing both ways, the neighbouring 63 mm bore yields 1559 N push at 0.5 MPa, while the 100 mm bore provides 3927 N. The 20 mm adjust window is ideal if your end position requires precise on-site tuning between 105 and 125 mm. Because this non-magnetic SKU lacks a -S suffix, it cannot support position sensing. For strokes at or exceeding 300 mm, carefully manage side-load forces to prevent premature seal wear. If your application requires true load holding on air loss, select an external rod lock or the SAIL/BSAI variant, as the adjustable stop never functions as a brake.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X125-20
- ✓ 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 SIJ80X125-20 FAQ
Yes, the SIJ80X125-20 is discontinued. The exact drop-in replacement is the SAIJ80X125-20, which shares the identical ISO 15552 interface, 125 mm stroke, 20 mm adjust window, G3/8 port, and 4523 N push force at 0.9 MPa.
The 80 mm bore delivers 2513 N push and 2268 N pull at 0.5 MPa, 3518 N at 0.7 MPa, and 4523 N at 0.9 MPa, with a theoretical max of 513 kgf. The external stop screw provides a 20 mm adjust window, allowing you to shorten the 125 mm extend stroke down to 105 mm on-site.
Related AirTAC SAI Cylinders
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