This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX20, 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 SI200BX20
The AirTAC Airtac SI200 Standard Cylinder SI200BX20 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 20mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX20, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke20 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX20
- 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 SI200BX20
The AirTAC SI200BX20 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 20mm stroke. Built with an extruded aluminium barrel and adjustable air cushions, it delivers 15708 N push force at 0.5 MPa. The direct replacement is the SAI200BX20, which matches the ISO 15552 mounting interface, bore, stroke, G3/4 port and output force. This SKU uses a SUS304 stainless steel rod (B option) but lacks a magnet, so it cannot accept a sensor.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also introduces SAIL and BSAI lock variants absent from the legacy SI line.
Airtac SI200 Standard Cylinder SI200BX20 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX20 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX20 |
| Bore size | Ø200 mm |
| Stroke | 20 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 SAI200BX20 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 SAI200BX20 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 SI200BX20
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×20 | 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 SI200BX20 Is Used
Heavy Press Operations
Generates 28274 N of push force at 0.9 MPa for high-tonnage stamping, forming, and press tasks in rugged manufacturing environments.
Massive Platen Lowering
Ideal for safely lowering heavy platens or molds, using the 50mm adjustable air cushions to decelerate the load smoothly at stroke end.
Stainless Rod Clamping
The SUS304 stainless piston rod excels in humid or washdown clamping stations, providing corrosion resistance for heavy industrial fixtures.
Replacing the Airtac SI200 Standard Cylinder SI200BX20 with the SAI200BX20
To replace the SI200BX20, order the SAI200BX20. Confirm the ISO 15552 mounting interface, the 200mm bore, the 20mm stroke, the G3/4 port, and the SUS304 stainless rod requirement. Because this SKU has no magnet, it cannot support legacy CS1-B/DS1-B sensors; if sensing is needed, specify a magnet on the new SAI order. When sizing, neighbouring bores (like 160mm) offer less force, while staying at 200mm provides 21991 N at 0.7 MPa. A plain cylinder drifts on air loss because the cushion only decelerates; for load holding, select the SAIL lock or BSAI clamp-lock variant, or use an external pilot check valve. Even at 20mm stroke, verify guide alignment to prevent rod bending under high side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX20
- ✓ 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 SI200BX20 FAQ
Yes, the SI200BX20 is discontinued. The direct replacement is the SAI200BX20. It is dimensionally interchangeable per ISO 15552, matching the 200mm bore, 20mm stroke, G3/4 port, and mounting interface for a seamless fixture upgrade.
The 200mm bore features a G3/4 port and delivers a push force of 15708 N and pull of 15080 N at 0.5 MPa. At 0.7 MPa push is 21991 N, and at 0.9 MPa it is 28274 N. The theoretical maximum force is 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX20
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX20 replacement — usually within 7-8 hours.