This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X75-30STC, 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 SIJ63X75-30STC
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X75-30STC 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 SAIJ63X75-30STC, 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 → SAIJ63X75-30STC
- 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 SIJ63X75-30STC
The AirTAC SIJ63X75-30STC 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 30 mm on-site, yielding a usable 45-75 mm extension out of the 75 mm nominal maximum.
The direct replacement is the SAIJ63X75-30STC, matching the interface, force, and TC mounting. The SAIJ upgrade uses a two Y-shaped one-way piston seal for low start-up pressure and long life. The stop screw sets end position but is not a load lock; use SAIL or BSAI for held loads.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X75-30STC Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X75-30STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X75-30STC |
| 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 SAIJ63X75-30STC 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 SAIJ63X75-30STC 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 SIJ63X75-30STC
| 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 SIJ63X75-30STC Is Used
Multi-Position Clamping
Allows operators to dial in the extend stroke from 45 to 75 mm on-site to clamp parts of varying widths without swapping the cylinder.
Adjustable Transfer Stops
An external stop screw provides a tunable end position for diverting or stopping packages of different sizes on a TC-mounted conveyor line.
Variable Depth Indexing
Perfect for pusher arms where the extend target depth must be fine-tuned in the field, using the 30 mm adjustment window to set the exact 45-75 mm reach.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X75-30STC with the SAIJ63X75-30STC
To replace the discontinued SIJ63X75-30STC, order the direct replacement SAIJ63X75-30STC, reusing your existing TC mount and G3/8 piping. The 30 mm adjust window is ideal if your end position needs on-site tuning between 45 and 75 mm. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches. Because the 75 mm stroke is under 300 mm, side-load rod deflection is minimal. Remember the stop screw only sets the end position; it is not a lock, so add an external rod lock for load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X75-30STC
- ✓ 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 SIJ63X75-30STC FAQ
Yes, the SIJ63X75-30STC is discontinued. The direct replacement is the SAIJ63X75-30STC, which shares the same ISO 15552 interface, 63 mm bore, 75 mm stroke, 30 mm adjust window, G3/8 port, and TC mounting. The SAIJ upgrade features a two Y-shaped one-way piston seal for longer life.
The external stop screw provides a 30 mm adjustment window, allowing the extend stroke to be shortened from the 75 mm nominal maximum down to 45 mm. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X75-30STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X75-30STC replacement — usually within 7-8 hours.