This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X600-20, 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 SIJ63 Double Rod Adjustable Cylinder SIJ63X600-20
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X600-20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 600mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X600-20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke600 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X600-20
- 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 SIJ63 Double Rod Adjustable Cylinder SIJ63X600-20
The AirTAC SIJ63X600-20 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued. It lets you trim the extend stroke by up to 20 mm on-site, yielding a usable 580-600 mm stroke from the 600 mm nominal maximum. The direct replacement is the SAIJ63X600-20, matching the interface, force, and mounting.
The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this non-magnetic SKU cannot take a switch. The stop screw sets end position but is not a load lock; use SAIL or BSAI for holding.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X600-20 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X600-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X600-20 |
| Bore size | Ø63 mm |
| Stroke | 600 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 SAIJ63X600-20 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 SAIJ63X600-20 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 SIJ63X600-20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×600 | 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 SIJ63X600-20 Is Used
Press Fit Tuning
Dialing in the exact 580-600 mm extend endpoint on-site to seat bearings without overshooting, using the 20 mm stop screw window.
Pallet Stopper
Fine-tuning the end stop position for different pallet depths, ensuring the 63 mm bore handles the impact without drifting.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X600-20 with the SAIJ63X600-20
To replace the discontinued SIJ63X600-20, use the SAIJ63X600-20 direct, which retains the 20 mm adjust window, 600 mm max stroke, and G3/8 port. Choose the 20 mm adjust window if you need precise 580-600 mm extend endpoint tuning. Reuse FA, LB, or TC ISO 15552 mounts directly. This SKU lacks the -S magnet and cannot support legacy CS1-B/DS1-B sensors. Because the stroke is 600 mm, ensure external guides to prevent rod bending and manage side loads. The stop screw is not a lock; for load holding on air loss, specify an external rod lock or pilot-operated check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X600-20
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X600-20 FAQ
Yes, the SIJ63X600-20 is discontinued. The direct replacement is the SAIJ63X600-20. It shares the same ISO 15552 interface, 63 mm bore, 600 mm stroke, 20 mm adjust window, G3/8 port, and mounting options, while adding an upgraded piston seal.
The external stop screw allows trimming the extend stroke by up to 20 mm on-site, giving a 580-600 mm usable range. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X600-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X600-20 replacement — usually within 7-8 hours.