This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX75S, 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 SI200BX75S
The AirTAC Airtac SI200 Standard Cylinder SI200BX75S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 75mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX75S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke75 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX75S
- 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 SI200BX75S
The AirTAC SI200BX75S is a discontinued double-acting ISO 15552 profile cylinder featuring a 200mm bore and 75mm stroke. Built with an extruded aluminum barrel, it delivers 15708 N of push force at 0.5 MPa and includes a -S piston magnet for CS1-B/DS1-B position sensing. The direct replacement is the SAI200BX75S, which matches the original G3/4 port, M36x2 rod thread, and ISO 15552 mounting interface for seamless fixture integration.
The SAI upgrade introduces an advanced piston seal with two Y-shaped one-way elements for low start-up pressure and extended service life. This model includes the -B SUS304 stainless steel piston rod for corrosion resistance. Note that a standard cylinder cannot hold a load without live air; the SAIL or BSAI lock variants are required for static holding.
Airtac SI200 Standard Cylinder SI200BX75S Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX75S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX75S |
| Bore size | Ø200 mm |
| Stroke | 75 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 SAI200BX75S 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 SAI200BX75S 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 SI200BX75S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×75 | 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 SI200BX75S Is Used
Heavy Stamp Pressing
Generates 15708 N at 0.5 MPa to drive large forming dies and heavy-duty stamping operations with reliable force.
Robotic Welding Clamp
Provides the rigid 200mm bore holding power required for large robotic welding fixtures and heavy structural assembly jigs.
Replacing the Airtac SI200 Standard Cylinder SI200BX75S with the SAI200BX75S
To replace the discontinued SI200BX75S, order the SAI200BX75S. Verify that your existing setup matches the ISO 15552 mounting interface, 200mm bore, 75mm stroke, G3/4 port, and the -S magnet requirement for CS1-B/DS1-B legacy sensors (the SAI uses current AirTAC switches). Because this is a high-force 200mm bore cylinder, sizing down to a 160mm bore drops the 0.5 MPa push force to 10053 N, while sizing up is beyond the standard range. The -B rod option provides SUS304 stainless steel for wet environments, and a Viton H seal raises the operating temperature to 0-150 C. Remember that the adjustable 50mm air cushions only decelerate the piston near stroke end; they do not hold the load. If you need true load holding upon air loss, select the SAIL air-released lock or BSAI clamp-lock variant, or install an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX75S
- ✓ 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 SI200BX75S FAQ
Yes, the SI200BX75S is discontinued. The direct replacement is the SAI200BX75S. It is dimensionally interchangeable per ISO 15552, retaining the same 200mm bore, 75mm stroke, G3/4 port, and mounting interface. The SAI simply upgrades the piston seal to two Y-shaped one-way elements for longer life and lower start-up pressure.
The 200mm bore utilizes a G3/4 air port and a 40mm piston rod. At 0.5 MPa it provides 15708 N of push force and 15080 N of pull force. At 0.7 MPa the push force 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 SAI200BX75S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX75S replacement — usually within 7-8 hours.