This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X150-20, 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 SIJ63X150-20
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X150-20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 150mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X150-20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke150 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X150-20
- 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 SIJ63X150-20
The AirTAC SIJ63X150-20 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. The external stop screw lets you trim the extend stroke by up to 20mm on-site (usable 130-150mm). The direct replacement is the SAIJ63X150-20, matching the G3/8 port, M16x1.5 rod, and 30mm cushions.
The SAIJ successor reuses the ISO 15552 mounting interface and adds an upgraded two Y-shaped one-way piston seal for lower start-up pressure. The stop sets end position but is not a load lock; for held loads use SAIL or BSAI. This non-magnet SKU cannot take a switch.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X150-20 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X150-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X150-20 |
| Bore size | Ø63 mm |
| Stroke | 150 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 SAIJ63X150-20 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 SAIJ63X150-20 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 SIJ63X150-20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×150 | 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 SIJ63X150-20 Is Used
Press Fit Calibration
Trimming the extend stroke by up to 20mm on-site allows operators to dial in precise press-fit depths for 63mm bore assembly tasks without swapping cylinders.
Adjustable End Stop Palletizing
Setting a specific 130-150mm extend stroke creates a firm mechanical end position for pallet engagement, ensuring repeatable placement without relying on air pressure.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X150-20 with the SAIJ63X150-20
Replace the SIJ63X150-20 directly with the SAIJ63X150-20, preserving the 20mm adjust window. Reuse FA, LB, or TC mounts via the ISO 15552 interface. As a non-S model, this cylinder cannot accept a magnetic switch; add external sensors if needed. For stroke lengths >=300mm, verify side-load guide tolerances. Remember the stop screw trims extend position only; it is not a lock, so specify an external rod lock for load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X150-20
- ✓ 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 SIJ63X150-20 FAQ
Yes, the SIJ63X150-20 is discontinued. The direct replacement is the SAIJ63X150-20. It shares the same ISO 15552 interface, 63mm bore, 150mm stroke, 20mm adjust window, G3/8 port, and mounting options, but features an upgraded piston seal.
The external stop screw window is 20mm, allowing a usable extend stroke of 130-150mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X150-20
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X150-20 replacement — usually within 7-8 hours.