This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X50-50, 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 SIJ100X50-50
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X50-50 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 50mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X50-50, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke50 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X50-50
- 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 SIJ100X50-50
The AirTAC SIJ100X50-50 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder with a 100mm bore and 50mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 50mm on-site, setting the exact end position without needing custom machining. The direct replacement is the SAIJ100X50-50, matching the G1/2 port, M20x1.5 rod thread, and 36mm adjustable cushion.
The SAIJ upgrade retains the ISO 15552 mounting interface for direct reuse of FA, LB, or TC brackets and features an upgraded two Y-shaped one-way piston seal for lower start-up pressure. This SKU lacks a magnet (-S), so it cannot accept a magnetic switch. The stop screw sets position but is not a lock; for load holding on air loss, use an external rod lock or SAIL/BSAI variant.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X50-50 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X50-50 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X50-50 |
| Bore size | Ø100 mm |
| Stroke | 50 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 SAIJ100X50-50 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 SAIJ100X50-50 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 SIJ100X50-50
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X50-50 Is Used
Press Fit Tuning
Allows operators to dial in the exact 0-50mm extend position for pressing bearings without machining custom spacers.
Variable Stopper Arm
Adjusts the extend stroke on-site to accommodate different package widths on a sorting line within the 50mm window.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X50-50 with the SAIJ100X50-50
Choose the 50mm adjust window if your field tuning requires trimming the extend stroke by up to 50mm on-site; the nominal 50mm stroke is the maximum. Reuse existing FA, LB, or TC mounts via the ISO 15552 interface. Because this SKU has no -S suffix, it cannot accept legacy CS1-B/DS1-B sensors. The external stop sets end position but is not a load lock; for held loads use an external rod lock or pilot-operated check valve. Since the stroke is under 300mm, side-load wear is minimal.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X50-50
- ✓ 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 SIJ100X50-50 FAQ
Yes, the SIJ100X50-50 is discontinued. The direct replacement is the SAIJ100X50-50, featuring the same ISO 15552 interface, 100mm bore, 50mm stroke, 50mm adjust window, and G1/2 port.
The external stop screw window is 50mm, allowing you to trim the extend stroke by up to 50mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X50-50
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X50-50 replacement — usually within 7-8 hours.