This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX70, 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 SI200BX70
The AirTAC Airtac SI200 Standard Cylinder SI200BX70 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 70mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX70, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke70 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX70
- 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 SI200BX70
The AirTAC SI200BX70 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 70mm stroke. Delivering 15708 N push force at 0.5 MPa via a G3/4 port, it is replaced by the SAI200BX70 direct. This SKU lacks a magnet (-S), so it cannot accept a CS1-B/DS1-B sensor.
The SAI200BX70 maintains the exact ISO 15552 mounting interface, M36x2 thread, and 50mm cushions. It upgrades the piston seal to two Y-shaped elements for low start-up pressure. For high heat, choose Viton H seals (0-150 C) or the SUS304 -B rod.
Airtac SI200 Standard Cylinder SI200BX70 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX70 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX70 |
| Bore size | Ø200 mm |
| Stroke | 70 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 SAI200BX70 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 SAI200BX70 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 SI200BX70
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×70 | 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 SI200BX70 Is Used
Heavy Press Stamping
Drives large metal forming presses requiring 15708 N of thrust at 0.5 MPa to shape thick steel plates.
Industrial Clamp Systems
Secures massive fabricated components during machining, relying on the 50mm adjustable cushions for deceleration.
Replacing the Airtac SI200 Standard Cylinder SI200BX70 with the SAI200BX70
To replace the SI200BX70, order the SAI200BX70, confirming the ISO 15552 mounting interface, 200mm bore, 70mm stroke, G3/4 port, and accessory type. Because this SKU lacks a magnet, it cannot support position sensing; if sensing is needed, specify an SAI with the -S magnet option. The plain cylinder does not hold load on air loss; for suspended loads use an external pilot check valve or the SAIL/BSAI lock variant. Sizing both ways: the 160mm neighbor bore offers 10053 N [email protected], while this 200mm bore hits 21991 N at 0.7 MPa. With a 70mm stroke, side-load rod-bending risks are minimal, but ensure rigid guidance for the 801 kg safe vertical load capacity.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX70
- ✓ 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 SI200BX70 FAQ
Yes, the SI200BX70 is discontinued. The direct replacement is the SAI200BX70. It shares the identical ISO 15552 mounting interface, 200mm bore, 70mm stroke, output force, G3/4 port, and accessories, fitting existing fixtures perfectly.
The G3/4 port feeds a 40mm rod. Forces are: 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 3204 kgf theoretical max at 1.0 MPa. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX70
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX70 replacement — usually within 7-8 hours.