This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X75-75, 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 SIJ63X75-75
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X75-75 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 75mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X75-75, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke75 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X75-75
- 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 SIJ63X75-75
The AirTAC SIJ63X75-75 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 75 mm on-site, yielding a usable 0-75 mm extend window from the 75 mm nominal maximum. As an SIJ model it is end-of-life; the direct replacement is the SAIJ63X75-75, matching the ISO 15552 mounting interface, bore, force, and adjust window.
The SAIJ successor retains the upgraded SAI piston seal design (two Y-shaped one-way elements for low start-up pressure and long life). Note this SKU lacks a magnet (-S), so it cannot accept legacy CS1-B/DS1-B sensors. The stop screw sets the end position but is not a lock; loads will drift on air loss, so use an external rod lock or SAIL/BSAI variant for holding.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X75-75 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X75-75 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X75-75 |
| Bore size | Ø63 mm |
| Stroke | 75 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 SAIJ63X75-75 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 SAIJ63X75-75 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 SIJ63X75-75
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×75 | 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 SIJ63X75-75 Is Used
Variable Depth Spot Facing
Machine operators tune the extend stroke on-site to machine pockets at varying depths without swapping the entire actuator assembly.
Adjustable Transfer Pusher
A packaging line alters the extend end position to push different carton widths into a diverter, using the stop screw to set the exact resting point.
Variable Stop Pallet Positioner
Logistics conveyors use the external stop to set precise pallet halt points on the fly, accommodating mixed pallet sizes within the adjust window.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X75-75 with the SAIJ63X75-75
To replace the discontinued SIJ63X75-75, order the direct replacement SAIJ63X75-75, which preserves the 75 mm adjust window, 20 mm rod, M16x1.5 thread, and G3/8 port. Choose the 75 mm adjust window if you need the full 0-75 mm extend trim capability. Mounting options include Basic, FA, LB, and TC brackets. Because this SKU lacks a magnet, it cannot support position sensing. Since the stroke is under 300 mm, side-load risks are minimal, but always verify guide alignment. The external stop only sets the end position; it does not lock the load, so for held loads use an external rod lock or pilot-operated check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X75-75
- ✓ 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 SIJ63X75-75 FAQ
Yes, the AirTAC SIJ63X75-75 is discontinued. The direct replacement is the SAIJ63X75-75. It shares the identical ISO 15552 interface, 63 mm bore, 75 mm stroke, 75 mm adjust window, 20 mm rod, G3/8 port, and mounting options, while adding the upgraded SAI piston seal.
The external stop screw allows you to trim the extend stroke by up to 75 mm on-site (usable extend 0-75 mm). The stop sets end position but is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X75-75
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X75-75 replacement — usually within 7-8 hours.