This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX85, 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 SI200AX85
The AirTAC Airtac SI200 Standard Cylinder SI200AX85 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 85mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX85, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke85 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX85
- 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 SI200AX85
The AirTAC SI200AX85 is a discontinued double-acting ISO 15552 profile cylinder with an 85 mm stroke. It delivers 15708 N push force at 0.5 MPa via a G3/4 port. The direct replacement is SAI200AX85, matching the bore, stroke, force, port and ISO 15552 mounting interface exactly.
The SAI upgrade features a two Y-shaped one-way piston seal for low start-up pressure and long life. This -A variant uses a SUS420J2 stainless rod. With no -S suffix, it lacks a magnet and cannot take a sensor.
Airtac SI200 Standard Cylinder SI200AX85 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX85 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX85 |
| Bore size | Ø200 mm |
| Stroke | 85 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 SAI200AX85 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 SAI200AX85 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 SI200AX85
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×85 | 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 SI200AX85 Is Used
Heavy Press Clamping
Generates 21991 N at 0.7 MPa to secure large steel plates during machining operations.
Industrial Forming Press
Provides the robust linear force required for deep draw and metal bending machinery.
Pallet Lift Station
Lifts loaded pallets vertically, safely handling weights up to the 801 kg margin limit.
Replacing the Airtac SI200 Standard Cylinder SI200AX85 with the SAI200AX85
To replace the SI200AX85, order SAI200AX85 to retain the exact ISO 15552 mounting interface, 200 mm bore, 85 mm stroke, G3/4 port and M36x2 thread. This SKU has no magnet, so it cannot accept CS1-B/DS1-B switches; add -S if sensing is needed. If sizing down, a 160 mm bore yields 10053 N push at 0.5 MPa. For load holding on air loss, note the cushion only decelerates; use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX85
- ✓ 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 SI200AX85 FAQ
Yes, the SI200AX85 is discontinued. The direct replacement is the SAI200AX85. It shares the same ISO 15552 mounting interface, 200 mm bore, 85 mm stroke, output force and G3/4 port, fitting existing fixtures perfectly.
It features a G3/4 port and provides 15708 N push / 15080 N pull 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. Speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX85
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX85 replacement — usually within 7-8 hours.