This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X85, 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 SI200 Standard Cylinder SI200X85
The AirTAC Airtac SI200 Standard Cylinder SI200X85 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 85mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X85, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke85 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X85
- 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 SI200 Standard Cylinder SI200X85
The AirTAC SI200X85 is a discontinued double-acting ISO 15552 profile cylinder with an 85 mm stroke. Delivering 15708 N of push force at 0.5 MPa through a G3/4 port, it is replaced by the SAI200X85 direct upgrade. The SAI shares the exact ISO 15552 mounting interface, bore, stroke, output force, port size, and accessories, fitting existing fixtures perfectly. The SAI features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life.
Because this specific SKU lacks the -S magnet suffix, it cannot accept a position sensor. The legacy SI family used CS1-B/DS1-B switches, but a no-S cylinder cannot take them. For load holding, note that a plain cylinder drifts on air loss—the cushion only decelerates. For secure holding, consider the SAIL or BSAI lock variants, or an external pilot check valve. The SAI family also adds the SAIF self-valve option the SI lacked.
Airtac SI200 Standard Cylinder SI200X85 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X85 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X85 |
| Bore size | Ø200 mm |
| Stroke | 85 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 SAI200X85 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
The SAI200X85 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI200 Standard Cylinder SI200X85
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×85 | 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 SI200 Standard Cylinder SI200X85 Is Used
Heavy Press Tonnage
Drives large forming presses and stamping dies requiring up to 28274 N of thrust at 0.9 MPa with stable 85 mm travel.
Injection Mold Actuation
Actuates heavy mold halves and platens where the 200 mm bore and G3/4 port deliver massive volume shifts quickly.
Pallet Lift Gates
Raises and lowers industrial palletizing gates, safely moving loads near the 801 kg vertical lift threshold.
Replacing the Airtac SI200 Standard Cylinder SI200X85 with the SAI200X85
To replace the discontinued SI200X85, order the SAI200X85. Confirm the ISO 15552 mounting interface, the 200 mm bore, the 85 mm stroke, and the G3/4 port. Specify your thread option (PT, G, or NPT) and mounting accessory (such as LB foot or TC trunnion). Since this SKU has no -S magnet, it cannot support sensing; if you need position feedback, select an SAI200X85S instead. Sizing both ways: the 200 mm bore provides 15708 N push at 0.5 MPa (3204 kgf max at 1.0 MPa), while the neighbouring 160 mm bore offers 10053 N. If your application requires load holding on air loss, remember the standard cushion only decelerates; you must use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants. The 40 mm carbon steel rod handles high thrust, and the 50 mm adjustable cushion manages end-of-stroke energy.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X85
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI200 Standard Cylinder SI200X85 FAQ
Yes, the AirTAC SI200X85 is discontinued. The direct replacement is the SAI200X85. It shares the same ISO 15552 mounting interface, 200 mm bore, 85 mm stroke, output force, and G3/4 port, so it drops directly into existing fixtures.
This double-acting cylinder uses a G3/4 air port. 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, and a theoretical maximum force of 3204 kgf at 1.0 MPa. It operates at 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X85
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X85 replacement — usually within 7-8 hours.