This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X150-20S, 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 SIJ63X150-20S
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X150-20S 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 SAIJ63X150-20S, 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 → SAIJ63X150-20S
- 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 SIJ63X150-20S
The AirTAC SIJ63X150-20S is a double-acting, double-rod ISO 15552 adjustable-stroke cylinder. This discontinued unit uses an external stop screw to trim the extend stroke by up to 20 mm on-site, yielding a usable 130-150 mm window from the 150 mm nominal maximum.
As the SIJ line is end-of-life, the direct replacement is the SAIJ63X150-20S, preserving the ISO 15552 mounting interface, bore, and force. The SAIJ upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life. Note the stop screw sets end position only; it is not a load lock.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X150-20S Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X150-20S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X150-20S |
| 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 SAIJ63X150-20S 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 SAIJ63X150-20S 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 SIJ63X150-20S
| 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 SIJ63X150-20S Is Used
Variable Depth Drilling
Allows operators to tune the 130-150 mm extend stroke on-site to accommodate different material thicknesses without changing the entire actuator setup.
Adjustable Diverter Arms
Provides field-adjustable reach for routing varying package sizes, trimming the extend stroke by up to 20 mm to prevent impact damage at the end of travel.
Custom Format Stops
Enables precise positioning of pallet loads by dialing in the exact extension endpoint within the 20 mm adjustment window during commissioning.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X150-20S with the SAIJ63X150-20S
To replace the discontinued SIJ63X150-20S, order the direct replacement SAIJ63X150-20S, which retains the G3/8 port, 20 mm adjust window, and -S magnet for legacy CS1-B/DS1-B switches. Choose the 20 mm adjust window if your extend stroke needs precise 130-150 mm field tuning. Mounting options include FA, LB, and TC brackets. Because the stroke is 150 mm (under 300 mm), side-load rod deflection is minimal. For load holding on air loss, do not rely on the stop screw or cushions; specify an external rod lock, pilot-operated check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X150-20S
- ✓ 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 SIJ63X150-20S FAQ
Yes, the SIJ63X150-20S is discontinued. The direct replacement is the SAIJ63X150-20S. It shares the identical ISO 15552 interface, 63 mm bore, 150 mm stroke, 20 mm adjust window, and G3/8 port. The SAIJ upgrade features an improved two-piece Y-shaped piston seal for longer life and lower start-up pressure.
The external stop screw shortens the extend stroke by up to 20 mm on-site, giving a usable range of 130-150 mm. The stop sets end position only; it is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X150-20S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X150-20S replacement — usually within 7-8 hours.