This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X80-20S, 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 SIJ63 Double Rod Adjustable Cylinder SIJ63X80-20S
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X80-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 80mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X80-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke80 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X80-20S
- 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 SIJ63 Double Rod Adjustable Cylinder SIJ63X80-20S
The AirTAC SIJ63X80-20S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 63mm bore and G3/8 port. An external stop screw lets you trim the extend stroke by up to 20mm on-site, giving a usable 60-80mm extend range from the 80mm nominal maximum. The stop sets the end position but is not a load lock.
The direct replacement is the SAIJ63X80-20S, sharing the same ISO 15552 interface, force, and mounting. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. A plain cylinder drifts on air loss; for held loads use SAIL or BSAI lock variants.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-20S Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X80-20S |
| Bore size | Ø63 mm |
| Stroke | 80 mm |
| Acting type | Double acting |
| Port size | G3/8 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ63X80-20S carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa | 2182 N | — |
| Max (@1.0 MPa) | 318 kgf | |
The SAIJ63X80-20S produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×80 | 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 SIJ63 Double Rod Adjustable Cylinder SIJ63X80-20S Is Used
Variable Depth Spot Facing
Needs field stroke tuning to dial in the exact 60-80mm extend reach for spot facing operations on mixed-part batches without reprogramming the machine.
Tiered Pallet Positioning
Demands an adjustable end position to engage different pallet stack heights, using the external stop screw to set the precise 60-80mm extension limit on the factory floor.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-20S with the SAIJ63X80-20S
To replace the discontinued SIJ63X80-20S, order the direct replacement SAIJ63X80-20S, reusing your existing FA, LB, or TC ISO 15552 mounts and G3/8 port. The 20mm adjust window is ideal if your end position needs 60-80mm of extend travel. The -S suffix means a piston magnet is present for CS1-B/DS1-B switches (the SAIJ uses current AirTAC switches). For strokes >=300mm, verify side-load guidance to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X80-20S
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X80-20S FAQ
Yes, the SIJ63X80-20S is discontinued. The direct replacement is the SAIJ63X80-20S. It shares the same ISO 15552 interface, 63mm bore, 80mm nominal stroke, 20mm adjust window, G3/8 port, and mounting, but adds an upgraded two Y-shaped one-way piston seal for longer life and lower start-up pressure.
The external stop screw window is 20mm, allowing you to shorten the 80mm nominal extend stroke down to 60mm on-site. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X80-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X80-20S replacement — usually within 7-8 hours.