This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X150-40, 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 SIJ63X150-40
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X150-40 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 SAIJ63X150-40, 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 → SAIJ63X150-40
- 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 SIJ63X150-40
The AirTAC SIJ63X150-40 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 63mm bore, 150mm nominal stroke, and G3/8 port. An external stop screw lets you trim the extend stroke by up to 40mm on-site, yielding a usable 110-150mm extend window. The stop sets the end position; it is not a load lock. This SKU lacks a magnet (-S omitted), so it cannot accept a magnetic switch for position sensing.
The direct replacement is the SAIJ63X150-40, preserving the interface, bore, stroke, adjust window, and M16x1.5 rod thread. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X150-40 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X150-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X150-40 |
| 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 SAIJ63X150-40 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 SAIJ63X150-40 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 SIJ63X150-40
| 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 SIJ63X150-40 Is Used
Variable-depth pressing
Allows operators to fine-tune the extend contact point within a 110-150mm window on-site without swapping cylinders when pressing parts of varying heights.
Adjustable transfer stops
Provides a field-adjustable end position for diverter gates, letting maintenance shorten the extend stroke by up to 40mm to accommodate new package profiles.
Tiered pallet positioning
Enables a single actuator to adapt its extend stop height on-site for different pallet layers, trimming the stroke precisely where the load must settle.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X150-40 with the SAIJ63X150-40
To replace the discontinued SIJ63X150-40, map directly to the SAIJ63X150-40 (insert A after the leading S), retaining the 40mm adjust window and 150mm max stroke. Choose the 40mm adjust window if your extend stroke needs on-site tuning between 110-150mm. Mounting interfaces (Basic, FA, LB, TC) reuse standard ISO 15552 dimensions. Because this SKU lacks the -S magnet, position sensing is unavailable. For stroke lengths of 300mm or more, verify side-load limits to prevent excessive guide wear. A plain cylinder does not hold loads on air loss; for held loads use an external rod lock or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X150-40
- ✓ 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 SIJ63X150-40 FAQ
Yes, the SIJ63X150-40 is discontinued. The direct replacement is the SAIJ63X150-40. It shares the same ISO 15552 interface, 63mm bore, 150mm nominal stroke, 40mm adjust window, G3/8 port, and mounting options. The SAIJ family also uses an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw provides a 40mm adjust window, meaning the usable extend stroke is 110-150mm. The stop sets end position only; it is not a load lock. The G3/8 port and 30mm adjustable cushions are fixed by the bore.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X150-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X150-40 replacement — usually within 7-8 hours.