This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200BX145, 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 SI200BX145
The AirTAC Airtac SI200 Standard Cylinder SI200BX145 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 145mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200BX145, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke145 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200BX145
- 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 SI200BX145
The AirTAC SI200BX145 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 145 mm stroke. Delivering 15708 N push force at 0.5 MPa, it features a 40 mm carbon steel rod and G3/4 porting. AirTAC replaced this legacy unit with the SAI200BX145, a direct sharing the exact ISO 15552 mounting interface, force, and cushions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. This specific SKU lacks a magnet, so it cannot accept a CS1-B or DS1-B sensor. For high heat, Viton H seals raise operating limits to 150 C.
Airtac SI200 Standard Cylinder SI200BX145 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200BX145 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200BX145 |
| Bore size | Ø200 mm |
| Stroke | 145 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 SAI200BX145 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 SAI200BX145 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 SI200BX145
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×145 | 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 SI200BX145 Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring 15708 N of push force at 0.5 MPa with robust 50 mm cushions.
Large Mold Clamping
Secures massive injection molds using the 3204 kgf maximum theoretical force at 1.0 MPa operating pressure.
Replacing the Airtac SI200 Standard Cylinder SI200BX145 with the SAI200BX145
To replace the SI200BX145, order the SAI200BX145. Verify your ISO 15552 mounting interface, G3/4 port thread (PT/G/NPT), and 40 mm rod thread (M36x2). Because this non-magnetic SKU lacks a sensor groove piston ring, it cannot take position switches; order a -S SAI if sensing is needed. For sizing down, a 160 mm bore yields 10053 N push at 0.5 MPa. If sizing up, note 200 mm is the largest standard bore. A plain cylinder drifts on air loss—the cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants. The SUS304 stainless rod (-B) option suits corrosive settings.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200BX145
- ✓ 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 SI200BX145 FAQ
Yes, the SI200BX145 is discontinued. The direct replacement is the SAI200BX145. It shares the identical ISO 15552 mounting interface, 200 mm bore, 145 mm stroke, G3/4 port, and output force, fitting existing fixtures perfectly.
It features a G3/4 air port. The force ratings 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 maximum theoretical force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200BX145
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200BX145 replacement — usually within 7-8 hours.