This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X75-75S, 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 SIJ63X75-75S
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X75-75S 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 SAIJ63X75-75S, 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 → SAIJ63X75-75S
- 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 SIJ63X75-75S
The AirTAC SIJ63X75-75S 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 75mm on-site, giving a usable 0-75mm extend window from the 75mm nominal maximum. It features a G3/8 port, M16x1.5 rod thread, and 30mm adjustable air cushions. This model includes a -S piston magnet for legacy CS1-B/DS1-B switches.
The direct replacement is the SAIJ63X75-75S, matching the ISO 15552 interface, bore, force, port, and mounting. 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. For held loads, use an external rod lock or SAIL/BSAI variant.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X75-75S Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X75-75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X75-75S |
| 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 SAIJ63X75-75S 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 SAIJ63X75-75S 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 SIJ63X75-75S
| 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 SIJ63X75-75S Is Used
Variable Depth Spot Facing
Machine multiple casting depths on a single fixture by dialing the 75mm extend stop screw to trim the tool approach on-site, avoiding the need for dedicated fixed-stroke units.
Adjustable Package Diverters
Tune the diverter finger extension precisely to varying carton widths on the line, using the 0-75mm adjustable window to prevent crushing without changing out the cylinder.
Tiered Pallet Positioning
Adapt pusher stroke on the fly for different pallet layer heights, using the external stop to set exact end positions for stacking without reprogramming the motion controller.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X75-75S with the SAIJ63X75-75S
To replace the discontinued SIJ63X75-75S, order the direct replacement SAIJ63X75-75S, retaining your existing FA, LB, or TC ISO 15552 mounts and G3/8 porting. The 75mm adjust window allows on-site extend tuning from 0 to 75mm. The -S suffix ensures a piston magnet is present for legacy CS1-B/DS1-B switches (the SAIJ uses current switches). For strokes of 300mm or longer, verify side-load limits to prevent guide wear. Remember, a plain cylinder drifts on air loss; for load holding, specify a SAIL or BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X75-75S
- ✓ 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 SIJ63X75-75S FAQ
Yes, the SIJ63X75-75S is discontinued. The direct replacement is the SAIJ63X75-75S. It shares the identical ISO 15552 mounting interface, 63mm bore, 75mm stroke, 75mm adjust window, G3/8 port, and force ratings. The SAIJ upgrade features a two-piece Y-shaped piston seal for lower start-up pressure and longer life.
The external stop screw allows you to trim the extend stroke by up to 75mm on-site (usable extend 0-75mm). The stop sets end position only and is not a load lock; use an external rod lock for held loads.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X75-75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X75-75S replacement — usually within 7-8 hours.