This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X50-30, 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 SIJ63X50-30
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X50-30 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 50mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X50-30, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke50 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X50-30
- 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 SIJ63X50-30
The AirTAC SIJ63X50-30 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder, now discontinued. An external stop screw lets you trim the extend stroke by up to 30mm on-site, giving a usable 20-50mm range, but this only sets the end position and is not a load lock.
The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. This non-magnet SKU cannot take a switch, and the 30mm adjustable cushions decelerate but never hold loads on air loss.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X50-30 Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X50-30 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X50-30 |
| Bore size | Ø63 mm |
| Stroke | 50 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 SAIJ63X50-30 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 SAIJ63X50-30 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 SIJ63X50-30
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×50 | 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 SIJ63X50-30 Is Used
Press Fit Tuning
Allows operators to dial in the exact 20-50mm extend position for seating bearings without machining custom spacers.
Variable Diverter Gate
Adjusts the pusher stroke on-site to accommodate different package widths on a single sorting line.
Prototype Actuation
Provides a flexible 30mm stroke-trim window for test fixtures where the final extended reach is unknown.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X50-30 with the SAIJ63X50-30
To replace the discontinued SIJ63X50-30, order the direct replacement SAIJ63X50-30, reusing your existing ISO 15552 FA, LB, or TC mounting hardware. Size both ways using 0.5MPa forces: the 50mm bore pushes 982N, while the 80mm bore pushes 2513N. Choose the 30mm adjust window if you need on-site tuning of the extend stroke from 20 to 50mm. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch. For stroke lengths under 300mm, side-load risks are minimal, but always guide the rod to prevent binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X50-30
- ✓ 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 SIJ63X50-30 FAQ
Yes, the SIJ63X50-30 is discontinued. The direct replacement is the SAIJ63X50-30, which matches the ISO 15552 interface, 63mm bore, 50mm stroke, 30mm adjust window, and G3/8 port.
The external stop screw provides a 30mm trim window, allowing the 50mm extend stroke to be shortened to 20mm on-site.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X50-30
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X50-30 replacement — usually within 7-8 hours.