This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI200AX40, 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 SI200AX40
The AirTAC SI200 Standard Cylinder SI200AX40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø200mm bore and 40mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI200AX40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ200 mm
- Stroke40 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI200AX40
- 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 SI200AX40
The AirTAC SI200AX40 is a discontinued double-acting ISO 15552 profile cylinder with a 200 mm bore and 40 mm stroke. It delivers 15708 N push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI200AX40, matching the exact bore, stroke, force, port, and ISO 15552 mounting interface for existing fixtures. This specific SKU features a SUS420J2 stainless steel rod (the -A option) and lacks a magnet, meaning it cannot accept position sensors.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. For load holding, note that a standard cylinder drifts without live air; use an external rod lock or pilot check valve, as the 50 mm adjustable cushions only decelerate.
Airtac SI200 Standard Cylinder SI200AX40 Technical Specifications
| Model | Airtac SI200 Standard Cylinder SI200AX40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI200AX40 |
| Bore size | Ø200 mm |
| Stroke | 40 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 SAI200AX40 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 SAI200AX40 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 SI200AX40
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 200 | Bore size in mm. |
| ×40 | 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 SI200AX40 Is Used
Heavy Pressing
Drives large stamping or forming presses requiring 21991 N of push force at 0.7 MPa to seat heavy components.
Industrial Clamp
Secures massive workpieces in machining centers, utilizing the 801 kg vertical lift capacity to hold molds firmly.
Platen Lowering
Controls the descent of heavy platens using the 50 mm adjustable air cushions to decelerate the load at stroke end.
Replacing the Airtac SI200 Standard Cylinder SI200AX40 with the SAI200AX40
To replace the SI200AX40, order the SAI200AX40. Confirm the ISO 15552 mounting interface, the 200 mm bore, the 40 mm stroke, and the G3/4 port. Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; if sensing is needed, specify an SAI200X40S. The -A rod denotes SUS420J2 stainless steel; choose the default carbon steel or SUS304 if your application differs. Sizing down, a 160 mm bore offers 10053 N push at 0.5 MPa; sizing up is not available as 200 mm is the maximum. For load holding on air loss, explore the SAIL or BSAI lock variants, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI200AX40
- ✓ 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 SI200AX40 FAQ
Yes, the SI200AX40 is discontinued. The direct replacement is the SAI200AX40. It is dimensionally interchangeable per ISO 15552, retaining the same 200 mm bore, 40 mm stroke, 15708 N force, G3/4 port, and mounting interface.
This double-acting cylinder features a G3/4 port and a 40 mm rod. It delivers 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 theoretical max force of 3204 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI200AX40
Send us the quantity and destination. We confirm price, stock and lead time on the SAI200AX40 replacement — usually within 7-8 hours.