This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX35, 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 SI200BX35
The AirTAC Airtac SI200 Standard Cylinder SI200BX35 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 35mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX35, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke35 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX35
- 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 SI200BX35
The AirTAC SI200BX35 is a discontinued double-acting ISO 15552 profile cylinder delivering 15708 N push at 0.5 MPa through a 200 mm bore and 35 mm stroke. It features a SUS304 stainless piston rod (-B) for corrosion resistance. The direct replacement is the SAI200BX35, matching the G3/4 port, M36x2 thread, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Note this SKU lacks a magnet, so it cannot take CS1-B/DS1-B sensors.
Airtac SI200 Standard Cylinder SI200BX35 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX35 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX35 |
| Bore size | Ø200 mm |
| Stroke | 35 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 SAI200BX35 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 SAI200BX35 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 SI200BX35
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×35 | 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 SI200BX35 Is Used
Heavy Press Clamping
Generates 15708 N of push force at 0.5 MPa to secure heavy steel plates during machining or welding operations.
High-Force Ejection
Uses the 40 mm SUS304 stainless rod to eject large formed parts from molds safely in corrosive industrial environments.
Industrial Stamping
Delivers short 35 mm stroke impacts with a theoretical maximum output of 3204 kgf for localized metal forming tasks.
Replacing the Airtac SI200 Standard Cylinder SI200BX35 with the SAI200BX35
To replace the SI200BX35, order the SAI200BX35 to retain the exact ISO 15552 mounting interface, 200 mm bore, 35 mm stroke, and G3/4 port. Because this SKU lacks the -S magnet, it cannot accept position sensors; order a magnet-equipped SAI if sensing is needed. The SUS304 (-B) rod is retained. Sizing both ways: if downsizing to a 160 mm bore, push drops to 10053 N at 0.5 MPa; if upsizing, note this 200 mm bore already hits the 3204 kgf max at 1.0 MPa. The 50 mm cushion decelerates the load but does not hold it—add an external rod lock, pilot check valve, or use the SAIL/BSAI lock variants for dead-load holding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX35
- ✓ 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 SI200BX35 FAQ
Yes, the SI200BX35 is discontinued. The direct replacement is the SAI200BX35. It features the same ISO 15552 mounting interface, 200 mm bore, 35 mm stroke, output force, G3/4 port, and SUS304 stainless rod, fitting existing fixtures perfectly.
It has a G3/4 port. Force 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 max of 3204 kgf at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX35
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX35 replacement — usually within 7-8 hours.