This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ50X100-100, 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X100-100
The AirTAC SIJ50 Double Rod Adjustable Cylinder SIJ50X100-100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø50mm bore and 100mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ50X100-100, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ50 mm
- Stroke100 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- StatusDiscontinued → SAIJ50X100-100
- 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X100-100
The AirTAC SIJ50X100-100 is a double-acting double-rod ISO 15552 adjustable-stroke cylinder. An external stop screw lets you trim the extend stroke by up to 100mm on-site, setting the exact end position without needing custom machining. This SIJ series is discontinued; the direct replacement is the SAIJ50X100-100, retaining the 100mm nominal stroke, 30mm adjustable cushions, and M16x1.5 rod thread.
The SAIJ upgrade features an improved two Y-shaped one-way piston seal for lower start-up pressure and longer life. The stop screw sets end position but is not a load lock; use an external rod lock or SAIL variant for held loads. This non-magnetic SKU cannot take a switch.
Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X100-100 Technical Specifications
| Model | Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X100-100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ50X100-100 |
| Bore size | Ø50 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| 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 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ50X100-100 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
The SAIJ50X100-100 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X100-100
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 50 | 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 SIJ50 Double Rod Adjustable Cylinder SIJ50X100-100 Is Used
Variable Depth Forming
Adjusts the extend stroke on-site to press components to different exact depths without swapping the entire actuator assembly.
Variable Length Diverter
Tunes the pusher extension length on a packaging line to deflect varying box sizes accurately onto different lanes.
Adjustable Height Stopper
Sets precise mechanical end positions for incoming pallets, allowing operators to alter the stopping height quickly on the factory floor.
Replacing the Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X100-100 with the SAIJ50X100-100
To replace the discontinued SIJ50X100-100, order the direct replacement SAIJ50X100-100, which matches the ISO 15552 mounting interface, G1/4 port, and 100mm adjust window. Choose the 100mm adjust window if your extend stroke needs on-site tuning from 0 to 100mm. Mounting options include FA, LB, and TC brackets. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch. For strokes of 300mm or longer, verify side-load constraints to prevent guide wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ50X100-100
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ50 Double Rod Adjustable Cylinder SIJ50X100-100 FAQ
Yes, the SIJ50X100-100 is discontinued. The direct replacement is the SAIJ50X100-100. It shares the same ISO 15552 interface, 50mm bore, 100mm stroke, 100mm adjust window, G1/4 port, and mounting options, but adds an upgraded piston seal.
The external stop screw provides a 100mm adjust window, allowing you to trim the extend stroke from the 100mm maximum down to 0mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ50X100-100
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ50X100-100 replacement — usually within 7-8 hours.