This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X370, 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 SI200X370
The AirTAC Airtac SI200 Standard Cylinder SI200X370 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 370mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X370, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke370 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X370
- 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 SI200X370
The AirTAC SI200X370 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 370mm stroke. It delivers 15708 N of push force at 0.5 MPa via a G3/4 port. The direct replacement is the SAI200X370, matching the interface, force, and mounting exactly.
This SKU lacks a magnet, so it cannot accept legacy CS1-B/DS1-B sensors. The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure. For load holding, the SAIL or BSAI lock variants are needed.
Airtac SI200 Standard Cylinder SI200X370 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X370 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X370 |
| Bore size | Ø200 mm |
| Stroke | 370 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 SAI200X370 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 SAI200X370 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 SI200X370
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×370 | 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 SI200X370 Is Used
Heavy Press Forming
Applies the 21991 N push force at 0.7 MPa to form thick metal components, utilizing the 370mm stroke for deep-draw operations.
Pallet Lifting Stations
Raises loaded pallets up to the 801 kg vertical lift limit, requiring external guides to manage the 370mm stroke safely.
Industrial Mold Clamping
Secures heavy injection molds with high clamping force, where the plain non-magnetic rod is sufficient for basic actuation.
Replacing the Airtac SI200 Standard Cylinder SI200X370 with the SAI200X370
To replace the SI200X370, order the SAI200X370. Verify the ISO 15552 mounting interface, M36x2 rod thread, G3/4 port, and 50mm cushions. Because this SKU has no -S suffix, it cannot support sensing. If dropping to bore 160, expect 10053 N push @0.5 MPa; sizing up is unnecessary as 200mm yields 15708 N. For the 370mm stroke, use external guides to prevent rod bending from side loads. The air cushion only decelerates; for load holding on air loss, use an external rod lock, pilot check valve, or the SAIL/BSAI variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X370
- ✓ 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 SI200X370 FAQ
Yes, the SI200X370 is discontinued. The direct replacement is the SAI200X370, which shares the same ISO 15552 mounting interface, 200mm bore, 370mm stroke, and G3/4 port.
It features a G3/4 port and delivers 15708 N push / 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and 28274 N push at 0.9 MPa. The theoretical max force is 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X370
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X370 replacement — usually within 7-8 hours.