This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ63X100-50STC, 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 SIJ63X100-50STC
The AirTAC SIJ63 Double Rod Adjustable Cylinder SIJ63X100-50STC 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 SAIJ63X100-50STC, 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 → SAIJ63X100-50STC
- 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 SIJ63X100-50STC
The AirTAC SIJ63X100-50STC is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. Its external stop screw lets you trim the extend stroke by up to 50mm on-site, yielding a usable 50-100mm extension from the 100mm nominal maximum. The 63mm bore features a G3/8 port, M16x1.5 rod thread, and 30mm adjustable cushions at each end. This specific model includes a TC mounting interface and a built-in piston magnet (-S) for legacy CS1-B/DS1-B switches.
The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note the stop screw sets end position only; it is not a load lock, so use an external rod lock for held loads.
Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X100-50STC Technical Specifications
| Model | Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X100-50STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ63X100-50STC |
| 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 SAIJ63X100-50STC 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 SAIJ63X100-50STC 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 SIJ63X100-50STC
| 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 SIJ63X100-50STC Is Used
Variable Pitch Indexing
Ideal for assembly stations needing field stroke tuning to accommodate different product heights, trimming the extend stroke by up to 50mm without changing the cylinder.
Adjustable Diverter Arms
Used on conveyor lines where the diverter push distance must be fine-tuned on-site to handle varying package widths without re-plumbing the pneumatic system.
Tiered Sorting Pushers
Applied in sorting facilities that require adjusting the extend end position on the fly to push items into different chutes based on operational changes.
Replacing the Airtac SIJ63 Double Rod Adjustable Cylinder SIJ63X100-50STC with the SAIJ63X100-50STC
To replace the discontinued SIJ63X100-50STC, use the SAIJ63X100-50STC directly—the mapping keeps the 63mm bore, 100mm nominal stroke, 50mm adjust window, -S magnet, and TC mount. Choose the 50mm adjust window if your field stroke tuning requires trimming the extend by up to 50mm; the stop screw sets the end position but is not a lock. The TC mount provides a trunnion interface for pivot applications. For strokes of 300mm or longer, verify side-load limits to prevent excessive rod wear. The -S magnet enables position sensing with legacy CS1-B/DS1-B switches, while the SAIJ replacement uses current AirTAC switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ63X100-50STC
- ✓ 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 SIJ63X100-50STC FAQ
Yes, the SIJ63X100-50STC is discontinued. The direct replacement is the SAIJ63X100-50STC, which shares the same ISO 15552 interface, 63mm bore, 100mm stroke, 50mm adjust window, G3/8 port, and TC mounting. The SAIJ upgrade features an improved two Y-shaped one-way piston seal for longer life.
The external stop screw has a 50mm adjust window, allowing the 100mm nominal extend stroke to be shortened to a minimum of 50mm on-site. This stop sets the end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ63X100-50STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ63X100-50STC replacement — usually within 7-8 hours.