This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X250-10, 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 SIJ63X250-10
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X250-10 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 250mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X250-10, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke250 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X250-10
- 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 SIJ63X250-10
The AirTAC SIJ63X250-10 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 63 mm bore, 250 mm nominal stroke, and a G3/8 port. An external stop screw lets you trim the extend stroke by up to 10 mm on-site, yielding a usable 240-250 mm forward travel. The stop sets the end position; it is not a load lock.
The direct replacement is the SAIJ63X250-10, which retains the same ISO 15552 interface, bore, stroke, adjust window, and mounting options. The SAIJ family features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This non-magnet SKU cannot take a switch; for held loads use an external rod lock or SAIL/BSAI variant.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X250-10 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X250-10 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X250-10 |
| Bore size | Ø63 mm |
| Stroke | 250 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 SAIJ63X250-10 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 SAIJ63X250-10 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 SIJ63X250-10
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | 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 SIJ63 Double Rod Adjustable Cylinder SIJ63X250-10 Is Used
Press Fit Alignment
Needs field stroke tuning to dial in the exact 245 mm extend position for seating bearings without over-traveling.
End-of-Line Diverter
Requires adjusting the extend stop by a few millimeters on-site to accommodate varying package widths on the line.
Pallet Stop Gate
Uses the external stop screw to fine-tune the 240-250 mm gate extension, ensuring precise pallet positioning.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X250-10 with the SAIJ63X250-10
To replace the discontinued SIJ63X250-10, order the SAIJ63X250-10 direct (insert an A after the leading S, keeping the bore, stroke, adjust, and port identical). Choose the 10 mm adjust window when you need only fine end-position tuning (usable extend 240-250 mm). Reuse FA, LB, or TC mounts via the ISO 15552 interface. As this SKU lacks the -S magnet, it cannot accept a magnetic switch. For stroke lengths of 300 mm or more, verify side-load limits to prevent excessive rod wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X250-10
- ✓ 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 SIJ63X250-10 FAQ
Yes, the SIJ63X250-10 is discontinued. The direct replacement is the SAIJ63X250-10, offering the same ISO 15552 interface, 63 mm bore, 250 mm stroke, 10 mm adjust window, and G3/8 port.
The external stop screw provides a 10 mm adjust window (usable extend 240-250 mm). The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X250-10
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X250-10 replacement — usually within 7-8 hours.