This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ80X250-100TC, 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 SIJ80X250-100TC
The AirTAC SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-100TC 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 direct replacement is the SAIJ80X250-100TC, 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 → SAIJ80X250-100TC
- 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 SIJ80X250-100TC
The AirTAC SIJ80X250-100TC is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 250 mm nominal stroke and a G3/8 port. An external stop screw lets you trim the extend stroke by up to 100 mm on-site, giving a usable extend window of 150-250 mm. The stop sets the end position; it is not a load lock. The direct replacement is the SAIJ80X250-100TC, retaining the same interface, 25 mm rod, M20x1.5 thread, and 36 mm adjustable cushions.
The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure, and the SAI family adds lock variants (SAIL/BSAI) the SI line lacked. This non-magnet SKU cannot take a switch.
Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-100TC Technical Specifications
| Model | Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-100TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ80X250-100TC |
| 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 SAIJ80X250-100TC 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 SAIJ80X250-100TC 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 SIJ80X250-100TC
| 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 SIJ80X250-100TC Is Used
Variable Depth Forming Press
Needs field stroke tuning to set precise material deformation depth on-site without swapping cylinders, trimming the extend stroke within the 150-250 mm window.
Adjustable Package Diverter
Requires altering the extend reach on the fly to handle varying carton widths on the line, using the 100 mm stop screw to prevent over-travel.
Variable Position End Stopper
Uses the external stop to tune the exact physical barrier position for different pallet sizes entering a staging zone, setting the end position without re-plumbing.
Replacing the Airtac SIJ80 Dual Axis Adjustable Cylinder SIJ80X250-100TC with the SAIJ80X250-100TC
To replace the discontinued SIJ80X250-100TC, order the direct replacement SAIJ80X250-100TC; the TC mounting interface and ISO 15552 dimensions are identical. Choose the 100 mm adjust window if you need to trim the full 150-250 mm extend range. The external stop screw sets end position but is not a lock; for load holding on air loss, use an external rod lock, pilot-operated check valve, or the SAIL/BSAI lock variant. This non-magnet SKU cannot take a magnetic switch (no -S suffix). For strokes >=300 mm, verify side-load guidance to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ80X250-100TC
- ✓ 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 SIJ80X250-100TC FAQ
Yes, the SIJ80X250-100TC is discontinued. The direct replacement is the SAIJ80X250-100TC. It shares the same ISO 15552 interface, 80 mm bore, 250 mm nominal stroke, 100 mm adjust window, G3/8 port, and TC mounting.
The external stop screw window is 100 mm, allowing you to trim the extend stroke from the 250 mm maximum down to 150 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ80X250-100TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ80X250-100TC replacement — usually within 7-8 hours.