This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X700-20, 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 SIJ80X700-20
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X700-20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø80mm bore and 700mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ80X700-20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ80 mm
- Stroke700 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ80X700-20
- 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 SIJ80X700-20
The AirTAC SIJ80X700-20 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued and replaced by the direct replacement SAIJ80X700-20. It has an 80mm bore, G3/8 port, and a 700mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 20mm on-site, yielding a usable 680-700mm range. The stop sets the end position; it is not a load lock.
The SAIJ upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Without live air, the piston drifts; cushions only decelerate near stroke end. For held loads, use an external rod lock or SAIL/BSAI variant. At 700mm, use external guides to prevent rod bending.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X700-20 Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X700-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X700-20 |
| Bore size | Ø80 mm |
| Stroke | 700 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 SAIJ80X700-20 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 SAIJ80X700-20 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 SIJ80X700-20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 80 | Bore size in mm. |
| ×700 | 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 SIJ80X700-20 Is Used
Press Fit Tuning
Pin insertion machinery needing precise extend endpoint trimming within the 20mm window to compensate for material thickness variations.
Divert Stop Adjustment
Pneumatic routing gates on packaging lines requiring field adjustment of the 700mm extend stop to handle changing carton sizes.
Pallet Positioning
End-of-line pallet stops where the exact extend position must be dialed in on-site to align with varying load dimensions.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X700-20 with the SAIJ80X700-20
To replace the discontinued SIJ80X700-20, map directly to the SAIJ80X700-20, reusing the exact ISO 15552 mounting interface (Basic, FA, LB, TC) and G3/8 port. Choose the 20mm adjust window if your extend stroke needs on-site tuning between 680-700mm. This SKU lacks a -S magnet and cannot take a magnetic switch. Because the 700mm stroke exceeds 300mm, account for side-load and rod-bending by adding external guides. The adjustable stop sets end position but is not a lock; for load-holding without live air, specify an external rod lock or pilot-operated check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X700-20
- ✓ 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 SIJ80X700-20 FAQ
Yes, the SIJ80X700-20 is discontinued. The direct replacement is the SAIJ80X700-20, offering the same ISO 15552 interface, 80mm bore, 700mm stroke, G3/8 port, and mounting options.
The external stop screw provides a 20mm adjust window, allowing you to trim the extend stroke from 700mm down to 680mm on-site.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X700-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X700-20 replacement — usually within 7-8 hours.