This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X310, 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 SI200X310
The AirTAC Airtac SI200 Standard Cylinder SI200X310 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 SAI200X310, 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 → SAI200X310
- 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 SI200X310
The AirTAC SI200X310 is a discontinued double-acting ISO 15552 profile cylinder. Generating 15708 N of push force at 0.5 MPa through its 200 mm bore and G3/4 port, it is replaced by the direct replacement SAI200X310, which shares identical mounting, stroke, and output. The SAI upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life.
Because this specific SKU lacks the -S magnet suffix, it cannot accept a position sensor. The original SI series used CS1-B/DS1-B switches, but this non-magnetic variant cannot host them. For high-temperature environments up to 150 C, Viton H seals are an option. Note that the SAI family introduces variants the SI lacked, including the SAIL air-released lock and BSAI clamp-lock for secure load holding.
Airtac SI200 Standard Cylinder SI200X310 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X310 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X310 |
| 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 SAI200X310 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 SAI200X310 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 SI200X310
| 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 SI200X310 Is Used
Heavy Press Stamping
Drives large metal forming presses requiring 15708 N of push force at 0.5 MPa to shape thick steel plates.
Mold Clamping Fixture
Secures large injection molds via the ISO 15552 interface, utilizing the 50 mm adjustable cushion for smooth deceleration.
Replacing the Airtac SI200 Standard Cylinder SI200X310 with the SAI200X310
To replace the discontinued SI200X310, order the SAI200X310. It is a direct per the ISO 15552 mounting interface, matching the 200 mm bore, 310 mm stroke, 15708 N output, G3/4 port, and M36x2 rod thread. If sizing up or down, neighboring bores are 160 mm and 125 mm; at 0.5 MPa, this 200 mm bore delivers 15708 N push and 15080 N pull. A plain cylinder does not hold load on air loss—the 50 mm cushion only decelerates—so use an external rod lock or pilot check valve, or step up to the SAIL/BSAI lock variant. With a 310 mm stroke, prevent rod bending by guiding the load externally to avoid side-loading. This no-S SKU cannot take a sensor.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X310
- ✓ 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 SI200X310 FAQ
Yes, the AirTAC SI200X310 is discontinued. The direct replacement is the SAI200X310. It shares the same ISO 15552 mounting interface, 200 mm bore, 310 mm stroke, output force, G3/4 port, and accessories, fitting directly into existing fixtures.
The 200 mm bore uses a G3/4 port and features a 40 mm rod. It generates 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 max force of 3204 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X310
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X310 replacement — usually within 7-8 hours.