This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX35S, 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 SI200BX35S
The AirTAC Airtac SI200 Standard Cylinder SI200BX35S 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 SAI200BX35S, 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 → SAI200BX35S
- 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 SI200BX35S
The AirTAC SI200BX35S is a discontinued double-acting ISO 15552 profile cylinder featuring a 200mm bore and 35mm stroke. It delivers 15708 N push force at 0.5 MPa through a G3/4 port. AirTAC replaced this legacy unit with the SAI200BX35S, a direct upgrade retaining the exact ISO 15552 mounting interface, M36x2 thread, and 3204 kgf maximum force. The SAI features an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life.
This specific SKU includes a -B SUS304 stainless piston rod for corrosion resistance and an -S magnet for legacy CS1-B/DS1-B sensors. Note that plain cylinders drift without live air; for load holding consider the SAIL or BSAI lock variants.
Airtac SI200 Standard Cylinder SI200BX35S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX35S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX35S |
| 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 SAI200BX35S 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 SAI200BX35S 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 SI200BX35S
| 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 SI200BX35S Is Used
Heavy Pressing
Generates up to 28274 N at 0.9 MPa for seating large bearings and forming heavy plate in hydraulic-free pneumatic presses.
Stamping Blanking
Drives robust 200mm tooling for high-tonnage blanking and stamping operations where a short 35mm stroke is sufficient.
Replacing the Airtac SI200 Standard Cylinder SI200BX35S with the SAI200BX35S
To replace the discontinued SI200BX35S, order the SAI200BX35S. Confirm the ISO 15552 mounting interface, the G3/4 port, and your mounting accessory (LB, FA, CA, TC) match. Retain the -B SUS304 rod and -S magnet; the SAI uses current AirTAC switches instead of the legacy CS1-B/DS1-B. Sizing both ways: this 200mm bore yields 15708 N at 0.5 MPa, while a neighbouring 160mm bore offers 10053 N. A plain cylinder does not hold load on air loss—the cushion only decelerates—so specify an external rod lock or pilot check valve for suspended loads. The SAIL air-released lock or BSAI clamp-lock variants are ideal if you need integrated holding. Speed is 30-500 mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX35S
- ✓ 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 SI200BX35S FAQ
Yes, the AirTAC SI200BX35S is discontinued. The direct replacement is the SAI200BX35S. It is dimensionally interchangeable per ISO 15552, keeping the same 200mm bore, 35mm stroke, G3/4 port, and mounting interface. You simply order the SAI equivalent.
The bore is 200mm with a G3/4 air port. Force output is 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and 28274 N push at 0.9 MPa. The theoretical maximum force is 3204 kgf at 1.0 MPa. It uses a 50mm adjustable air cushion at both ends.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX35S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX35S replacement — usually within 7-8 hours.