This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X1700, 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 SI200 Standard Cylinder SI200X1700 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 1700mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X1700, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI200X1700 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 1700 mm stroke. Because 1700 mm exceeds the 1500 mm maximum standard stroke for this bore, it is a non-standard, made-to-order length. It delivers 15708 N push force at 0.5 MPa. The direct replacement is the SAI200X1700, which retains the exact ISO 15552 mounting interface, G3/4 port, and M36x2 rod thread.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this SKU lacks a magnet (-S) and cannot take a CS1-B/DS1-B sensor. For load holding, the cushion only decelerates; use an external rod lock or pilot check valve.
| Model | Airtac SI200 Standard Cylinder SI200X1700 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X1700 |
| Bore size | Ø200 mm |
| Stroke | 1700 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2.0 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI200X1700 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 | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
The SAI200X1700 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). |
|---|---|
| 200 | Bore size in mm. |
| ×1700 | 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).
Drives large tonnage metal forming presses requiring 21991 N push force at 0.7 MPa over a long travel distance.
Actuates heavy injection molds into position, relying on external guides to prevent rod bending on the 1700 mm stroke.
To replace the SI200X1700, order the SAI200X1700. Confirm the ISO 15552 mounting interface, the G3/4 port, and your mounting accessory (LB, FA, TC, etc.). This 1700 mm length is non-standard (exceeding the 1500 mm max), so expect made-to-order lead times. At 0.5 MPa it pushes 15708 N; if sizing both ways, the neighboring 160 mm bore yields 10053 N. Because this stroke exceeds 300 mm, you must support the load with external guides to prevent rod bending and side-load damage. This non-magnetic SKU cannot accept position sensors. If you need positive load holding on air loss, step up to the SAIL or BSAI lock variants, or use an external pilot-operated check valve.
Replacement checklist
Yes, the SI200X1700 is discontinued. The direct replacement is the SAI200X1700. It is dimensionally interchangeable per ISO 15552, matching the 200 mm bore, 1700 mm stroke, G3/4 port, and mounting interface, so it fits existing fixtures directly.
This double-acting cylinder features a G3/4 air port and M36x2 rod thread. The thrust ratings are: 15708 N push and 15080 N pull at 0.5 MPa; 21991 N push at 0.7 MPa; 28274 N push at 0.9 MPa; with a theoretical max of 3204 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X1700 replacement — usually within 7-8 hours.