This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X600-75, 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 SIJ63X600-75
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X600-75 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 600mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X600-75, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke600 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X600-75
- 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 SIJ63X600-75
The AirTAC SIJ63X600-75 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 63 mm bore and 600 mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 75 mm on-site, yielding a usable 525-600 mm window. This SKU lacks a magnet and cannot accept a reed switch. As a direct, the SAIJ63X600-75 preserves the ISO 15552 mounting interface, bore, force, and adjust window.
The SAIJ replacement upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. The external stop sets end position but is not a load lock; use an external rod lock or SAIL/BSAI variant for held loads. On 600 mm strokes, use external guides to prevent rod bending.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X600-75 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X600-75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X600-75 |
| Bore size | Ø63 mm |
| Stroke | 600 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 SAIJ63X600-75 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 SAIJ63X600-75 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 SIJ63X600-75
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×600 | 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 SIJ63X600-75 Is Used
Variable Depth Forming
A press fixture requiring field stroke tuning to accommodate material thickness variations, trimming the extend stroke by up to 75 mm to prevent over-travel.
Adjustable Transfer Pusher
A packaging line where product lengths vary, needing the cylinder to fine-tune the extend end position on-site without changing the entire actuator.
Variable Height Diverter
A sortation gate requiring precise end-position adjustments for different package profiles, using the external stop screw to set the exact extend distance.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X600-75 with the SAIJ63X600-75
To replace the discontinued SIJ63X600-75, order the direct replacement SAIJ63X75-75 which keeps the 63 mm bore, 600 mm max stroke, 75 mm adjust window, G3/8 port, and FA/LB/TC mountings. Choose the 75 mm adjust window if your end-position tuning requires trimming the extend stroke by up to 75 mm on-site. Because this SKU lacks the -S magnet, it cannot accept legacy CS1-B/DS1-B sensors; confirm if sensing is needed. For the 600 mm stroke, external guides are required to manage side-load and rod-bending forces. The stop screw sets end position and does not lock the load on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X600-75
- ✓ 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 SIJ63X600-75 FAQ
Yes, the SIJ63X600-75 is discontinued. The direct replacement is the SAIJ63X600-75. It preserves the ISO 15552 interface, 63 mm bore, 600 mm stroke, 75 mm adjust window, G3/8 port, and mounting options, but adds an upgraded Y-shaped piston seal.
The external stop screw window is 75 mm, allowing you to trim the extend stroke from 600 mm down to 525 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X600-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X600-75 replacement — usually within 7-8 hours.