This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X800-50, 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 SIJ63X800-50
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X800-50 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 SAIJ63X800-50, 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 → SAIJ63X800-50
- 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 SIJ63X800-50
The AirTAC SIJ63X800-50 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 63mm bore and 800mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 50mm on-site, yielding a usable 750-800mm extension. As a direct, the SAIJ63X800-50 replaces it perfectly.
The SAIJ successor retains the exact ISO 15552 mounting interface, force, and adjust window, while upgrading the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note this non-magnetic SKU cannot take a switch; the external stop sets end position but is not a load lock.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-50 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X800-50 |
| 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 SAIJ63X800-50 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 SAIJ63X800-50 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 SIJ63X800-50
| 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 SIJ63X800-50 Is Used
Variable-Length Rejecter Arm
A packaging line needing to push varying box sizes uses the 50mm on-site adjust window to tune the extend stroke without changing the cylinder, ensuring precise rejection.
Tunable Material Stop
A material handling conveyor uses the external stop screw to set the exact 750-800mm extension for different pallet widths, adjusting the end position quickly on the floor.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X800-50 with the SAIJ63X800-50
To replace the SIJ63X800-50, order the direct replacement SAIJ63X800-50, matching the 63mm bore, 800mm nominal stroke, 50mm adjust window, and G3/8 port. Choose the 50mm adjust window if your field tuning requires trimming up to 50mm off the maximum extend; the resulting usable extension is 750-800mm. Mounting options include FA, LB, and TC brackets. Because this SKU lacks the -S suffix, it has no magnet and cannot accept legacy CS1-B/DS1-B sensors. For the 800mm stroke, use external guides to prevent rod bending and manage side loads. The stop screw sets end position but does not hold loads on air loss; for held loads use an external rod lock or SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X800-50
- ✓ 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 SIJ63X800-50 FAQ
Yes, the SIJ63X800-50 is discontinued. The direct replacement is the SAIJ63X800-50, which shares the identical ISO 15552 interface, 63mm bore, 800mm stroke, 50mm adjust window, G3/8 port, and mounting options. The SAIJ family also features an upgraded piston seal for longer life.
The external stop screw allows you to trim the extend stroke by up to 50mm on-site, giving a usable extension of 750-800mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X800-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X800-50 replacement — usually within 7-8 hours.