This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX650S, 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 SI200BX650S
The AirTAC Airtac SI200 Standard Cylinder SI200BX650S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 650mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX650S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke650 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX650S
- 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 SI200BX650S
The AirTAC SI200BX650S is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 650mm stroke. Delivering 15708 N push force at 0.5 MPa, it features a SUS304 stainless piston rod, a G3/4 port, and a built-in magnet for CS1-B/DS1-B sensors. The direct replacement is the SAI200BX650S, matching the interface, bore, stroke, force, and mounting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Note that a plain cylinder drifts without live air; use an external rod lock or pilot check valve for load holding.
Airtac SI200 Standard Cylinder SI200BX650S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX650S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX650S |
| Bore size | Ø200 mm |
| Stroke | 650 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 SAI200BX650S 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 SAI200BX650S 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 SI200BX650S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×650 | 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 SI200BX650S Is Used
Heavy Press Forming
Ideal for large stamping and forming presses requiring massive 15708 N thrust at 0.5 MPa.
Automated Assembly
Powers large-scale automated machinery where a 650mm stroke and high force are essential.
Replacing the Airtac SI200 Standard Cylinder SI200BX650S with the SAI200BX650S
To replace the SI200BX650S, order the SAI200BX650S and confirm the ISO 15552 mounting interface, 200mm bore, 650mm stroke, G3/4 port, and magnet (-S). The SAI family also adds SAIL (air-released lock) and BSAI (clamp-lock) variants if you need secure load holding, as standard cylinders only decelerate via cushion and cannot hold a load on air loss. Sizing both ways: a neighbouring 160mm bore yields 10053 N push at 0.5 MPa, while the 200mm bore hits 21991 N at 0.7 MPa. Because the 650mm stroke is long, use an external guide to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX650S
- ✓ 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 SI200BX650S FAQ
Yes, the SI200BX650S is discontinued. The direct replacement is the SAI200BX650S. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 650mm stroke, G3/4 port, and mounting fixtures.
The G3/4 port bore delivers 15708 N push and 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. The SAI upgrade uses an upgraded two Y-shaped one-way piston seal for low start-up pressure.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX650S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX650S replacement — usually within 7-8 hours.