This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200X155, 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 SI200X155
The AirTAC Airtac SI200 Standard Cylinder SI200X155 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 155mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200X155, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke155 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200X155
- 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 SI200X155
The AirTAC SI200X155 is a discontinued double-acting ISO 15552 profile cylinder with a 200mm bore and 155mm stroke. Delivering 15708N push force at 0.5MPa via a G3/4 port, it is replaced by the SAI200X155. This direct successor shares identical mounting, force, and port specs. The SAI features an upgraded piston seal with two Y-shaped elements for low start-up pressure and long life.
This non-magnetic SKU cannot accept a sensor. The SAI family adds SAIL, SAIF, and BSAI lock variants absent in the SI line. Rod materials include carbon steel, SUS420J2, or SUS304, with Viton H seals for 0-150C. Note: standard cylinders drift without air; use SAIL or external locks to hold loads.
Airtac SI200 Standard Cylinder SI200X155 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200X155 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200X155 |
| Bore size | Ø200 mm |
| Stroke | 155 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 SAI200X155 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 SAI200X155 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 SI200X155
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×155 | 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 SI200X155 Is Used
Heavy Pressing
Applies 21991N at 0.7MPa for forming and heavy-duty pressing operations.
Clamping Jigs
Secures large fabrications using the 3204kgf maximum holding force.
Replacing the Airtac SI200 Standard Cylinder SI200X155 with the SAI200X155
To replace the SI200X155, order the SAI200X155 direct, confirming the ISO 15552 interface, 200mm bore, 155mm stroke, G3/4 port, and M36x2 thread. This non-magnetic SKU cannot fit a sensor. If sizing up or down, adjacent bores are 160mm and 125mm; at 0.5MPa the 200mm yields 15708N push and 15080N pull. The 50mm adjustable cushion decelerates loads, but a plain cylinder drifts on air loss—use the SAIL lock or an external pilot check valve to hold loads. Speed is 30-500mm/s.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200X155
- ✓ 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 SI200X155 FAQ
Yes, the SI200X155 is discontinued. The direct replacement is the SAI200X155, matching the ISO 15552 mounting interface, 200mm bore, 155mm stroke, force, and G3/4 port.
It features a G3/4 port and provides 15708N push / 15080N pull at 0.5MPa, 21991N push at 0.7MPa, and a 3204kgf max at 1.0MPa. Speed is 30-500mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200X155
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200X155 replacement — usually within 7-8 hours.