This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X450CB, 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 SI200X450CB
The AirTAC Airtac SI200 Standard Cylinder SI200X450CB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 450mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X450CB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke450 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X450CB
- 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 SI200X450CB
The AirTAC SI200X450CB is a discontinued double-acting ISO 15552 profile cylinder, delivering a push force of 15708 N at 0.5 MPa through its 200 mm bore and 450 mm stroke. It features a 40 mm carbon steel rod, M36x2 thread, and a G3/4 port. Because this legacy unit is end-of-life, you should order the direct replacement: the SAI200X450CB. It matches the original ISO 15552 mounting interface, CB clevis mount, output force, and stroke.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for lower start-up pressure and extended life. Note that this specific SKU lacks a magnet (-S), so it cannot accept CS1-B or DS1-B sensors. For high-temperature environments up to 150 C, a Viton H seal option is available.
Airtac SI200 Standard Cylinder SI200X450CB Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X450CB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X450CB |
| Bore size | Ø200 mm |
| Stroke | 450 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 SAI200X450CB 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 SAI200X450CB 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 SI200X450CB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×450 | 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 SI200X450CB Is Used
Heavy Stamping Press
Drives large heavy-duty stamping dies requiring 15708 N of push force at 0.5 MPa, utilizing the 450 mm stroke to fully clear the workpiece.
Large Mold Transfer
Shifts heavy injection molds along the production line, relying on the 50 mm adjustable air cushions to decelerate the massive 200 mm piston smoothly.
Replacing the Airtac SI200 Standard Cylinder SI200X450CB with the SAI200X450CB
To replace the discontinued SI200X450CB, order the SAI200X450CB. Verify that your existing fixture uses the ISO 15552 CB clevis mounting interface, 200 mm bore, 450 mm stroke, and G3/4 port. This SAI swap retains the exact 15708 N push force at 0.5 MPa. If you need to downsize, the neighbouring 160 mm bore yields 10053 N at 0.5 MPa; if sizing up, consider external guides. Because the stroke is 450 mm, add external guides to prevent rod bending and side-load wear. A plain cylinder drifts on air loss—the cushion only decelerates near stroke end—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding. If you need integrated control, the SAIF variant with a built-in 4M valve is available for smaller bores (32-100).
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X450CB
- ✓ 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 SI200X450CB FAQ
Yes, the SI200X450CB is discontinued. The direct replacement is the SAI200X450CB. It is dimensionally interchangeable per ISO 15552, matching the 200 mm bore, 450 mm stroke, 15708 N force, G3/4 port, and CB clevis mounting interface.
The 200 mm bore uses a G3/4 port. It delivers a push of 15708 N and pull of 15080 N at 0.5 MPa, 21991 N push at 0.7 MPa, 28274 N push at 0.9 MPa, and a theoretical max of 3204 kgf at 1.0 MPa. The speed range is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X450CB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X450CB replacement — usually within 7-8 hours.