This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X200TC, 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 SI40 Standard Cylinder SI40X200TC
The AirTAC Airtac SI40 Standard Cylinder SI40X200TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 200mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X200TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke200 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X200TC
- 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 SI40 Standard Cylinder SI40X200TC
The AirTAC SI40X200TC is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 200mm stroke. Delivering 628N push force at 0.5MPa via a G1/4 port, it is replaced by the SAI40X200TC. This direct successor matches the TC trunnion mount, M12x1.25 rod thread, and 27mm cushions.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and longevity. Without a magnet, this SKU cannot take a sensor. The SAI family adds SAIL, SAIF, and BSAI lock variants.
Airtac SI40 Standard Cylinder SI40X200TC Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X200TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X200TC |
| Bore size | Ø40 mm |
| Stroke | 200 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 27 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI40X200TC carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAI40X200TC produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI40 Standard Cylinder SI40X200TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | 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 SI40 Standard Cylinder SI40X200TC Is Used
Package Diverting
Actuates diverting arms on packaging lines using the 628N push force and TC trunnion mount to handle moderate product flow.
Pallet Stops
Functions as a pneumatic stop gate for lightweight pallets, relying on the 200mm stroke to clear the conveyor path.
Replacing the Airtac SI40 Standard Cylinder SI40X200TC with the SAI40X200TC
To replace the SI40X200TC, order the SAI40X200TC. Verify the ISO 15552 TC trunnion interface, 40mm bore, 200mm stroke, G1/4 port, and M12x1.25 thread. Since this SKU lacks an -S magnet, it cannot accept CS1-B/DS1-B sensors. For sizing, the 32mm bore yields 402N push at 0.5MPa, while the 50mm bore provides 982N. Note that a plain cylinder drifts on air loss; the 27mm cushion only decelerates. For load holding, use an external pilot check valve or the SAIL/BSAI lock variants. At 200mm stroke, rod-bending risks are low, but ensure alignment to prevent side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X200TC
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI40 Standard Cylinder SI40X200TC FAQ
Yes, the SI40X200TC is discontinued. The direct replacement is the SAI40X200TC. It is dimensionally interchangeable per the ISO 15552 mounting interface, matching the 40mm bore, 200mm stroke, G1/4 port, and TC trunnion mount.
This double-acting cylinder features a G1/4 air port. It delivers 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, 1130N push at 0.9MPa, and a theoretical max of 128kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI40X200TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X200TC replacement — usually within 7-8 hours.