This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X800-20S, 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 SIJ63X800-20S
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X800-20S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 800mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X800-20S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke800 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X800-20S
- 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 SIJ63X800-20S
The AirTAC SIJ63X800-20S is a double-acting double-rod ISO 15552 adjustable-stroke cylinder. This discontinued model uses an external stop screw to trim the extend stroke by up to 20 mm on-site, yielding a usable 780-800 mm extend window from the 800 mm nominal maximum. The direct replacement is the SAIJ63X800-20S, matching the interface, force, and mounting.
The SAIJ upgrade retains the ISO 15552 mounting dimensions but incorporates an upgraded two-piece Y-shaped piston seal for lower start-up pressure and longer life. The stop screw sets the end position but is not a load lock; for held loads, use an external rod lock or SAIL/BSAI variant.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-20S Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X800-20S |
| Bore size | Ø63 mm |
| Stroke | 800 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 SAIJ63X800-20S 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 SAIJ63X800-20S 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 SIJ63X800-20S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×800 | 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 SIJ63X800-20S Is Used
Press Fit Calibration
Needs field stroke tuning to dial in the exact 780-800 mm extend endpoint on-site, ensuring consistent insertion depth without re-engineering the fixture.
Variable Length Diverter
Requires trimming the extend stroke by up to 20 mm to accommodate different package sizes on the fly, preventing over-travel damage on the line.
Adjustable End-Stop Pusher
Demands an on-site stroke adjustment to fine-tune the final resting position of pallets, allowing operators to adapt the 800 mm push cycle to varied cell layouts.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-20S with the SAIJ63X800-20S
To replace the discontinued SIJ63X800-20S, order the exact direct replacement SAIJ63X800-20S, which preserves the 63 mm bore, 800 mm stroke, 20 mm adjust window, G3/8 port, and -S magnet. The 20 mm adjust window is ideal for fine-tuning the extend endpoint without shims. Mounting options include FA, LB, and TC brackets. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches; the SAIJ replacement uses current AirTAC switches. For the 800 mm long stroke, verify side-load limits and use external guides to prevent rod bending.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X800-20S
- ✓ 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 SIJ63X800-20S FAQ
Yes, the SIJ63X800-20S is discontinued. The direct replacement is the SAIJ63X800-20S. It shares the identical ISO 15552 interface, 63 mm bore, 800 mm stroke, 20 mm adjust window, G3/8 port, and mounting options, but adds an upgraded piston seal.
The external stop screw provides a 20 mm adjust window, shortening the 800 mm nominal extend stroke down to 780 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X800-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X800-20S replacement — usually within 7-8 hours.