This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X200LB, 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 SI200X200LB
The AirTAC SI200 Standard Cylinder SI200X200LB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 200mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X200LB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke200 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X200LB
- 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 SI200X200LB
The AirTAC SI200X200LB is a discontinued double-acting ISO 15552 profile cylinder with an LB foot mount. Built for heavy-duty tasks, it delivers 15708 N push and 15080 N pull at 0.5 MPa through a G3/4 port. Because this legacy unit lacks a magnet (-S), it cannot accept position switches. You should order the direct replacement SAI200X200LB instead.
The SAI200X200LB shares the exact ISO 15552 mounting interface, 200 mm stroke, M36x2 rod thread, and 3204 kgf max force. It upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. The SAI family also introduces SAIL and BSAI lock variants absent in the SI line.
Airtac SI200 Standard Cylinder SI200X200LB Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X200LB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X200LB |
| Bore size | Ø200 mm |
| Stroke | 200 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 SAI200X200LB 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 SAI200X200LB 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 SI200X200LB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×200 | 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 SI200X200LB Is Used
Heavy Stamping Press
Drives large platens in metal forming, utilizing the 21991 N push force at 0.7 MPa to shape thick plate stock reliably.
Industrial Mold Clamping
Secures large injection molds using the LB foot mount, providing rigid fixation while handling the maximum 3204 kgf theoretical output.
Replacing the Airtac SI200 Standard Cylinder SI200X200LB with the SAI200X200LB
To replace the SI200X200LB, specify the SAI200X200LB and confirm the LB foot mount, 200 mm stroke, and G3/4 port. Choose your thread standard (PT, G, or NPT) and rod material (carbon, SUS420J2, or SUS304). Since this SKU has no magnet, you cannot mount legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if sensing is needed. For sizing, the 200 mm bore yields 15708 N at 0.5 MPa; if you need less force, step down to bore 160 (10053 N), or step up to custom bores if 28274 N at 0.9 MPa is insufficient. Note that a plain cylinder drifts on air loss—the 50 mm cushions only decelerate. For load holding, use an external pilot check valve or explore the SAIL/BSAI lock variants. Although this 200 mm stroke is short, always ensure adequate guide support to prevent rod bending under heavy loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X200LB
- ✓ 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 SI200X200LB FAQ
Yes, the SI200X200LB is discontinued. The direct replacement is the SAI200X200LB. It is dimensionally interchangeable per ISO 15552, retaining the same 200 mm bore, 200 mm stroke, LB foot mount, G3/4 port, and output force.
This double-acting cylinder uses a G3/4 air port. It generates 15708 N push and 15080 N pull at 0.5 MPa, 21991 N push at 0.7 MPa, and 28274 N push at 0.9 MPa. The theoretical maximum force is 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X200LB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X200LB replacement — usually within 7-8 hours.