This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X100-50, 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X100-50
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X100-50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 100mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X100-50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke100 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X100-50
- 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X100-50
The AirTAC SIJ100X100-50 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 window of 50-100 mm from the 100 mm nominal maximum. It features a 25 mm rod, M20x1.5 thread, 36 mm adjustable cushions, and a fixed G1/2 port.
The direct replacement is the SAIJ100X100-50, matching the ISO 15552 mounting interface, force, and adjust window. The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. Note this non-magnetic SKU cannot take a switch, and the stop screw sets end position only—it is not a load lock.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X100-50 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X100-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X100-50 |
| Bore size | Ø100 mm |
| Stroke | 100 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAIJ100X100-50 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAIJ100X100-50 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X100-50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X100-50 Is Used
Press Fit Tuning
Allows operators to dial in the exact extend position on-site for pressing bearings, compensating for material variance without changing the cylinder.
Variable Format Sealing
Adjusts the extend stroke on packaging lines to accommodate different carton depths, ensuring precise flap folding without retooling.
End-of-Line Testing
Sets specific travel limits during product endurance testing, letting engineers modify the extend endpoint dynamically as test parameters evolve.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X100-50 with the SAIJ100X100-50
To replace the discontinued SIJ100X100-50, order the direct replacement SAIJ100X100-50, keeping the exact 100 mm bore, 100 mm stroke, 50 mm adjust window, and G1/2 port. Choose the 50 mm adjust window if your field tuning requires trimming the extend stroke by up to 50 mm on-site. Mounting reuses standard ISO 15552 accessories like FA, LB, or TC brackets. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch; add -S if piston sensing is required. For stroke lengths of 300 mm or greater, verify your rod-end side-load limits to prevent guide wear. Remember the external stop sets end position but provides no load holding on air loss.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X100-50
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X100-50 FAQ
Yes, the SIJ100X100-50 is discontinued. The direct replacement is the SAIJ100X100-50, which shares the identical ISO 15552 interface, 100 mm bore, 100 mm stroke, 50 mm adjust window, and G1/2 port. The SAIJ family also uses an upgraded two Y-shaped one-way piston seal for longer life.
The external stop screw provides a 50 mm adjustment window, allowing the extend stroke to be shortened from the 100 mm maximum down to 50 mm. The stop sets end position only and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X100-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X100-50 replacement — usually within 7-8 hours.