This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X500-40, 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 SIJ80X500-40
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 500mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X500-40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke500 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X500-40
- 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 SIJ80X500-40
The AirTAC SIJ80X500-40 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 500 mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 40 mm on-site, giving a usable extend range of 460-500 mm. This 80 mm bore uses a G3/8 port, a 25 mm rod, and 36 mm adjustable air cushions at each end. The stop sets the end position; it is not a load lock, and this non-magnetic SKU cannot take a switch.
The SAIJ upgrade uses a two-piece Y-shaped piston seal for low start-up pressure and long life.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-40 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X500-40 |
| Bore size | Ø80 mm |
| Stroke | 500 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 SAIJ80X500-40 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 SAIJ80X500-40 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 SIJ80X500-40
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×500 | 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 SIJ80X500-40 Is Used
Variable Depth Drilling Jigs
Allows operators to dial in the exact 460-500 mm extend position for different material thicknesses on-site without swapping the entire actuator.
Adjustable Transfer Pushers
Fine-tunes the extend end-point by up to 40 mm to accommodate varying package sizes on a packaging line while maintaining a rigid external stop.
Multi-Position Pallet Stops
Sets a hard mechanical end position for pallets at 460 to 500 mm, ensuring precise placement without relying solely on valve timing.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X500-40 with the SAIJ80X500-40
To replace the discontinued SIJ80X500-40, order the SAIJ80X500-40 direct. It matches the 80 mm bore, 500 mm stroke, 40 mm adjust window, G3/8 port, and FA/LB/TC mountings. Choose the 40 mm adjust window if your extend stroke needs 460-500 mm of field tuning. Because this SKU lacks the -S magnet, it cannot accept legacy CS1-B/DS1-B sensors. For the 500 mm long stroke, use external guides to prevent rod bending and side-load wear. A plain cylinder does not hold loads on air loss; for held loads use an external rod lock or the SAIL/BSAI variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X500-40
- ✓ 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 SIJ80X500-40 FAQ
Yes, the SIJ80X500-40 is discontinued. The direct replacement is the SAIJ80X500-40. It shares the identical ISO 15552 interface, 80 mm bore, 500 mm stroke, 40 mm adjust window, G3/8 port, and mountings. The SAIJ features an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life.
The external stop screw provides a 40 mm adjust window, allowing the extend stroke to be shortened from the 500 mm maximum down to 460 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X500-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X500-40 replacement — usually within 7-8 hours.