This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X175-40S, 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 SIJ63X175-40S
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X175-40S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 175mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X175-40S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke175 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X175-40S
- 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 SIJ63X175-40S
The AirTAC SIJ63X175-40S is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 63mm bore and 175mm nominal stroke. An external stop screw lets you trim the extend stroke by up to 40mm on-site, yielding a usable extend range of 135-175mm. The stop sets the end position but is not a load lock. The direct replacement is the SAIJ63X175-40S, retaining the same G3/8 port, M16x1.5 rod thread, and 30mm adjustable cushions.
The SAIJ upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. Because it holds genuine ISO 15552 mounting-interface dimensions, you can reuse existing FA, LB, or TC brackets without re-drilling.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X175-40S Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X175-40S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X175-40S |
| Bore size | Ø63 mm |
| Stroke | 175 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 SAIJ63X175-40S 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 SAIJ63X175-40S 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 SIJ63X175-40S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×175 | 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 SIJ63X175-40S Is Used
Variable Depth Drilling
Adjusts the extend stroke on-site by up to 40mm to set precise drilling depths for multiple material thicknesses without changing the cylinder.
Adjustable Diverter Arm
Tunes the extend stop position to deflect varying package sizes on a line, ensuring accurate routing without repositioning the whole assembly.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X175-40S with the SAIJ63X175-40S
To replace the discontinued SIJ63X175-40S, order the direct replacement SAIJ63X175-40S, keeping the 40mm adjust window (135-175mm usable extend) and -S magnet for legacy CS1-B/DS1-B switches. Choose FA, LB, or TC mounting to match your ISO 15552 interface. For stroke lengths >=300mm, verify side-load limits to prevent rod binding. Remember, the external stop screw sets end position and does not lock; for load holding on air loss, use an external rod lock or the SAIL/BSAI variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X175-40S
- ✓ 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 SIJ63X175-40S FAQ
Yes, the SIJ63X175-40S is discontinued. The direct replacement is the SAIJ63X175-40S. It shares the same ISO 15552 interface, 63mm bore, 175mm stroke, 40mm adjust window, G3/8 port, and mounting, but adds an upgraded two Y-shaped one-way piston seal.
The 40mm adjust window allows trimming the extend stroke from 175mm down to 135mm on-site. The G3/8 port and 30mm cushions remain fixed.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X175-40S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X175-40S replacement — usually within 7-8 hours.