This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X50-40, 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 SIJ100X50-40
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X50-40 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 SAIJ100X50-40, 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 → SAIJ100X50-40
- 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 SIJ100X50-40
The AirTAC SIJ100X50-40 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 40 mm on-site, yielding a usable 10-50 mm extend window from the 50 mm nominal maximum. The direct replacement is the SAIJ100X50-40, matching the bore, stroke, force, and mounting.
The SAIJ successor retains the ISO 15552 mounting interface for direct hardware reuse and upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. Note this non-magnetic SKU cannot accept a sensor switch. The external stop sets end position only; it is not a load lock, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X50-40 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X50-40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X50-40 |
| 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 SAIJ100X50-40 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 SAIJ100X50-40 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 SIJ100X50-40
| 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 SIJ100X50-40 Is Used
Press Fit Tuning
Allows operators to dial in the exact 10-50 mm extend position for seating bearings without machining custom spacers.
Variable Transfer Stops
Adjusts the extend stop on the fly to handle mixed product sizes on a single packaging line.
Adjustable Pusher Stroke
Trims the extend distance to push varying carton depths into a labeling station precisely.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X50-40 with the SAIJ100X50-40
To replace the discontinued SIJ100X50-40, order the direct replacement SAIJ100X50-40, which preserves the ISO 15552 interface, G1/2 port, and 36 mm cushions. The 40 mm adjust window is ideal if your exact extend endpoint requires field tuning between 10 and 50 mm. Reuse existing FA, LB, or TC mounts. Because this SKU lacks the -S suffix, it cannot accept a magnetic switch; add -S if sensing is required. For strokes at or above 300 mm, carefully manage side loads to prevent rod bearing wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X50-40
- ✓ 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 SIJ100X50-40 FAQ
Yes, the SIJ100X50-40 is discontinued. The direct replacement is the SAIJ100X50-40, matching the 100 mm bore, 50 mm stroke, 40 mm adjust window, G1/2 port, and ISO 15552 mounting.
The theoretical max is 801 kgf at 1.0 MPa. The external stop screw provides a 40 mm adjust window, allowing the 50 mm nominal extend stroke to be shortened to as little as 10 mm on-site.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X50-40
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X50-40 replacement — usually within 7-8 hours.