This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X100-50S, 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 SIJ63X100-50S
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X100-50S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø63mm bore and 100mm stroke, G3/8 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ63X100-50S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ63 mm
- Stroke100 mm
- Port sizeG3/8
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ63X100-50S
- 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 SIJ63X100-50S
The AirTAC SIJ63X100-50S 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 50 mm on-site, giving a usable 50-100 mm extend out of the 100 mm nominal maximum. As a direct replacement, the SAIJ63X100-50S matches this bore, stroke, force, and mounting interface exactly.
The SAIJ upgrade features a two Y-shaped one-way piston seal for lower start-up pressure and longer life. The stop screw sets the end position but is not a lock; cylinders drift on air loss, so use an external rod lock or SAIL variant for load holding.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X100-50S Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X100-50S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X100-50S |
| Bore size | Ø63 mm |
| Stroke | 100 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 SAIJ63X100-50S 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 SAIJ63X100-50S 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 SIJ63X100-50S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 63 | Bore size in mm. |
| ×100 | 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 SIJ63X100-50S Is Used
Variable Depth Spot Facing
Machining fixtures needing field-tuned facing depth can dial in the extend stroke precisely within the 50 mm window without swapping cylinders.
Adjustable Package Diverters
Sorting lines handling mixed carton widths use the external stop to set the exact push distance on-site, preventing over-travel damage.
Tiered Pallet Positioning
Palletizing cells adapt the extend end position for varying load heights, trimming up to 50 mm off the nominal stroke to seat loads safely.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X100-50S with the SAIJ63X100-50S
To replace the discontinued SIJ63X100-50S, order the direct replacement SAIJ63X100-50S, reusing your existing ISO 15552 FA, LB, or TC mounts. The 50 mm adjust window is ideal if your extend target is 50-100 mm; for shorter fixed needs, choose a smaller adjust window. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B switches; the SAIJ uses current switches. For strokes of 300 mm or more, verify side-load limits to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X100-50S
- ✓ 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 SIJ63X100-50S FAQ
Yes, the SIJ63X100-50S is discontinued. The direct replacement is the SAIJ63X100-50S, which shares the identical ISO 15552 interface, 63 mm bore, 100 mm nominal stroke, 50 mm adjust window, G3/8 port, and mounting options.
The external stop screw allows trimming the extend stroke by up to 50 mm on-site, yielding a usable 50-100 mm extend. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X100-50S
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X100-50S replacement — usually within 7-8 hours.