This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X310S, 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 SI200X310S
The AirTAC SI200 Standard Cylinder SI200X310S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 310mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X310S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke310 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X310S
- 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 SI200X310S
The AirTAC SI200X310S is a discontinued double-acting ISO 15552 profile cylinder featuring a 200 mm bore and 310 mm stroke. Generating 15708 N push force at 0.5 MPa, it is replaced by the SAI200X310S. This direct upgrade shares the exact ISO 15552 mounting interface, G3/4 port, and M36x2 rod thread.
The SAI200X310S upgrades the piston seal to two Y-shaped one-way elements for low start-up pressure and long life. The SI -S magnet supports legacy CS1-B/DS1-B sensors, while the SAI uses current AirTAC switches. For high heat, Viton H seals raise the temperature limit to 150 C.
Airtac SI200 Standard Cylinder SI200X310S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X310S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X310S |
| Bore size | Ø200 mm |
| Stroke | 310 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 SAI200X310S 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 SAI200X310S 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 SI200X310S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×310 | 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 SI200X310S Is Used
Heavy Press Clamping
Delivers up to 21991 N at 0.7 MPa to secure large metal castings during heavy machining operations.
Pallet Lifting
Raises loaded pallets vertically, safely handling weights near the 801 kg vertical lift threshold.
Automated Forming
Drives large stamping dies with a 50 mm adjustable air cushion at both ends to decelerate heavy masses.
Replacing the Airtac SI200 Standard Cylinder SI200X310S with the SAI200X310S
To replace the discontinued SI200X310S, order the SAI200X310S, confirming the ISO 15552 mounting interface, 200 mm bore, 310 mm stroke, G3/4 port, and -S magnet. If downsizing, a 160 mm bore yields 10053 N push at 0.5 MPa; if upsizing is possible, the 200 mm bore is the largest standard option. Because the 310 mm stroke exceeds 300 mm, use external guides to prevent rod bending and side-load damage. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X310S
- ✓ 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 SI200X310S FAQ
Yes, the SI200X310S is discontinued. The direct replacement is the SAI200X310S, which shares the same ISO 15552 mounting interface, 200 mm bore, 310 mm stroke, output force, and G3/4 port.
It features a G3/4 port and provides 15708 N push / 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and a theoretical max of 3204 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X310S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X310S replacement — usually within 7-8 hours.