This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X400-100, 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X400-100
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X400-100 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 400mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X400-100, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke400 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAIJ100X400-100
- 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 SIJ100 Double Rod Adjustable Cylinder SIJ100X400-100
The AirTAC SIJ100X400-100 is a discontinued double-acting double-rod ISO 15552 adjustable-stroke cylinder. The external stop screw lets you trim the extend stroke by up to 100 mm on-site, yielding a usable 300-400 mm stroke from the 400 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 SAIJ100X400-100, sharing the same interface, force, and mounting.
The SAIJ upgrade introduces a two-piece Y-shaped piston seal for lower start-up pressure and longer life. Remember the stop screw sets end position but is not a load lock; for held loads use SAIL or an external rod lock. This non-magnet SKU cannot take a switch.
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-100 Technical Specifications
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-100 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X400-100 |
| Bore size | Ø100 mm |
| Stroke | 400 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 SAIJ100X400-100 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 SAIJ100X400-100 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 SIJ100X400-100
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×400 | 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 SIJ100X400-100 Is Used
Press Fit Tuning
Allows operators to dial in the exact 300-400 mm extend position for inserting parts without machining hard stops.
Variable Transfer Diverter
Adjusts the extend stroke on-site to accommodate different package widths on a sorting line.
Adjustable Pallet Stop
Trims the extend stroke by up to 100 mm to handle varying pallet depths without repositioning the cylinder.
Replacing the Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-100 with the SAIJ100X400-100
To replace the discontinued SIJ100X400-100, order the direct replacement SAIJ100X400-100, retaining your ISO 15552 mounting and G1/2 port. Choose the 100 mm adjust window if you need to trim the 400 mm extend stroke down to 300 mm; smaller windows save space if less trim is needed. Reuse FA, LB, or TC mounts. As this is a non-S model, it cannot accept a magnetic switch. For the 400 mm stroke, add external guides to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAIJ100X400-100
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X400-100 FAQ
Yes, the SIJ100X400-100 is discontinued. The direct replacement is the SAIJ100X400-100. It shares the same ISO 15552 interface, 400 mm stroke, 100 mm adjust window, G1/2 port, and force ratings.
The external stop screw window is 100 mm, allowing you to shorten the 400 mm extend stroke down to 300 mm on-site. The stop sets end position and is not a load lock.
Related AirTAC SAI Cylinders
Request a Quote for the SAIJ100X400-100
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X400-100 replacement — usually within 7-8 hours.