This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X150-50S, with the same bore, stroke, output force, port and mounting, so it fits the same application. 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 SIJ80X150-50S
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X150-50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 150mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X150-50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke150 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X150-50S
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X150-50S
The AirTAC SIJ80X150-50S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued. Its external stop screw lets you trim the extend stroke by up to 50 mm on-site, yielding a usable 100-150 mm extension from the 150 mm nominal maximum. The 80 mm bore features a 25 mm rod, M20x1.5 thread, 36 mm adjustable cushions, G3/8 port, and 30-800 mm/s speed. The direct replacement is the SAIJ80X150-50S, matching the interface, force, and adjust window.
The SAIJ successor retains the physical dimensions but incorporates an upgraded piston seal utilizing two Y-shaped one-way elements for lower start-up pressure and extended life. The stop screw strictly sets the end position; it is not a load lock. Because a plain cylinder drifts on air loss, use an external rod lock or the SAIL/BSAI variants for held loads. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X150-50S Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X150-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X150-50S |
| Bore size | Ø80 mm |
| Stroke | 150 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 SAIJ80X150-50S 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 SAIJ80X150-50S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X150-50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×150 | 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 SIJ80X150-50S Is Used
Variable Depth Drilling
Tuning the extend stroke on-site by up to 50 mm allows a drill head to adapt to varying material thicknesses without re-mounting the actuator.
Adjustable Diverter Gate
A packaging line can alter the extend position dynamically to deflect different product sizes using the 100-150 mm usable stroke window.
Variable Height Pallet Stop
The external stop screw sets the precise end position for pallets of varying heights, ensuring accurate placement without cushion lock.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X150-50S with the SAIJ80X150-50S
To replace the discontinued SIJ80X150-50S, specify the direct replacement SAIJ80X150-50S, which preserves the 50 mm adjust window, G3/8 port, and ISO 15552 mounting. Choose the 50 mm adjust window if your extend stroke requires on-site tuning between 100 and 150 mm. Mounting options include Basic, FA, LB, and TC brackets. The -S suffix ensures a piston magnet for switch sensing. For stroke lengths of 300 mm or greater, verify side-load limits to prevent excessive guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X150-50S
- ✓ 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 SIJ80X150-50S FAQ
Yes, the SIJ80X150-50S is discontinued. The direct replacement is the SAIJ80X150-50S.
The external stop screw allows you to trim the extend stroke by up to 50 mm on-site, giving a usable extension of 100-150 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X150-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X150-50S replacement — usually within 7-8 hours.