This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX275, 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 SI200BX275
The AirTAC SI200 Standard Cylinder SI200BX275 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 275mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX275, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke275 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX275
- 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 SI200BX275
The AirTAC SI200BX275 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 275mm stroke. It delivers 15708 N push force at 0.5 MPa and uses a G3/4 air port. The direct replacement is the SAI200BX275, which matches the exact ISO 15552 mounting interface, bore, stroke, force, and port size for immediate fixture compatibility.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. Because this SKU lacks the -S magnet, it cannot accept a sensor. For load holding, note that air cushions only decelerate; use an external rod lock or the SAIL/BSAI lock variants.
Airtac SI200 Standard Cylinder SI200BX275 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX275 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX275 |
| Bore size | Ø200 mm |
| Stroke | 275 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 SAI200BX275 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 SAI200BX275 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 SI200BX275
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×275 | 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 SI200BX275 Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring 15708 N of push force at 0.5 MPa with robust 200mm bore stability.
Automotive Assembly Jig
Actuates massive structural clamps on automotive welding lines, benefiting from the 275mm stroke and M36x2 rod thread.
Replacing the Airtac SI200 Standard Cylinder SI200BX275 with the SAI200BX275
To replace the SI200BX275, order the SAI200BX275. Verify your ISO 15552 mounting interface (LB, FA, TC, etc.), the 275mm stroke, and the G3/4 port. This non-magnetic SKU cannot take a switch; if sensing is needed, select an SAI model with the -S suffix for CS1-B/DS1-B switches. Sizing both ways: the 200mm bore yields 15708 N push at 0.5 MPa (3204 kgf max at 1.0 MPa), while a neighbouring 160mm bore offers 10053 N. For this 275mm stroke, ensure adequate guide support to prevent rod bending under side loads. Plain cylinders drift without air; for held loads, specify the SAIL or BSAI lock variant or an external pilot check valve. The SAI family also adds the SAIF integrated valve option.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX275
- ✓ 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 SI200BX275 FAQ
Yes, the SI200BX275 is discontinued. The direct replacement is the SAI200BX275. It shares the same ISO 15552 mounting interface, 200mm bore, 275mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly.
This double-acting cylinder features a G3/4 air port. It delivers 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 maximum of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX275
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX275 replacement — usually within 7-8 hours.