This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAIJ100X20-20, 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.
The AirTAC SIJ100 Double Rod Adjustable Cylinder SIJ100X20-20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 20mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAIJ100X20-20, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SIJ100X20-20 is a discontinued double-acting, double-rod ISO 15552 adjustable-stroke cylinder with a 100 mm bore and 20 mm maximum extend stroke. An external stop screw lets you trim the extend stroke by up to 20 mm on-site, setting the precise end position without custom machining. The direct replacement is the SAIJ100X20-20, matching the interface, force, and mounting.
The SAIJ upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and longer life. This non-magnet SKU (-S omitted) cannot accept a sensor. The stop screw sets end position but is not a load lock; use an external rod lock or SAIL/BSAI variant for held loads.
| Model | Airtac SIJ100 Double Rod Adjustable Cylinder SIJ100X20-20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAIJ100X20-20 |
| Bore size | Ø100 mm |
| Stroke | 20 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 SAIJ100X20-20 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAIJ100X20-20 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×20 | 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).
Adjustable end-position clamping of heavy castings, where the 20 mm screw window fine-tunes the grip on varying part tolerances.
Actuating a diverter gate on a conveyor line, allowing on-site stroke reduction to precisely match product width without changing the cylinder.
Driving a short insertion press where the stop screw dials in the exact 0-20 mm depth for seating bearings or pins consistently.
To replace the discontinued SIJ100X20-20, order the exact direct replacement SAIJ100X20-20, which preserves the 20 mm nominal stroke, 20 mm adjust window, G1/2 port, and 3927 N @0.5 MPa force. Select the 20 mm adjust window only if you need on-site extend trimming; otherwise a fixed SAI is simpler. Mounting interfaces (Basic, FA, LB, TC) reuse existing ISO 15552 dimensions. Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors. For any stroke >=300 mm, verify side-load limits to prevent guide failure.
Replacement checklist
Yes, the SIJ100X20-20 is discontinued. The direct replacement is the SAIJ100X20-20, which shares the identical ISO 15552 interface, 100 mm bore, 20 mm stroke, 20 mm adjust window, and G1/2 port.
The external stop screw allows you to trim the extend stroke by up to 20 mm on-site, but this only sets end position and is not a load lock.
Send us the quantity and destination. We confirm price, stock and lead time on the SAIJ100X20-20 replacement — usually within 7-8 hours.