This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X200SH, 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 SI40X200SH
The AirTAC Airtac SI40 Standard Cylinder SI40X200SH 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 SAI40X200SH, 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 → SAI40X200SH
- 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 SI40X200SH
The AirTAC SI40X200SH is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore and 200mm stroke. It features a G1/4 air port, M12x1.25 rod thread, and delivers 628 N push force at 0.5 MPa. The direct replacement is the SAI40X200SH, matching the interface, bore, stroke, force, and port for seamless fixture integration.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. This SI40X200SH variant includes a piston magnet for CS1-B/DS1-B switches and a Viton H seal for 0-150 C high-temp environments.
Airtac SI40 Standard Cylinder SI40X200SH Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X200SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X200SH |
| 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 SAI40X200SH 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 SAI40X200SH 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 SI40X200SH
| 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 SI40X200SH Is Used
Package Diversion
Actuates routing gates on 40mm bore conveyors, providing 628 N push at 0.5 MPa to deflect parcels reliably without overwhelming the mechanism.
Small Part Clamping
Secures aluminium workpieces in CNC machining fixtures, utilizing the 200mm stroke to accommodate varying material widths safely.
High-Temp Transfer
Moves components between drying ovens up to 150 C, relying on the Viton H seal and ISO 15552 profile barrel for thermal stability.
Replacing the Airtac SI40 Standard Cylinder SI40X200SH with the SAI40X200SH
To replace the SI40X200SH, order the SAI40X200SH. Verify the ISO 15552 mounting interface, 40mm bore, 200mm stroke, G1/4 port, and your specific mounting accessory (LB, FA, TC, etc.). The S suffix confirms the magnet for current AirTAC switches, and H denotes the Viton high-temp seal. If you need more force, the neighbouring 50mm bore yields 982 N push at 0.5 MPa; if less is acceptable, the 32mm bore provides 402 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants for load holding. At 200mm stroke, rod bending is minimal, but ensure guide alignment to prevent side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X200SH
- ✓ 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 SI40X200SH FAQ
Yes, the AirTAC SI40X200SH is discontinued. The direct replacement is the SAI40X200SH. It is dimensionally interchangeable per ISO 15552, retaining the same 40mm bore, 200mm stroke, 628 N force, G1/4 port, and mounting interface.
The 40mm bore features a G1/4 air port. Force output is 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, 1130 N push at 0.9 MPa, and a theoretical maximum of 128 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI40X200SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X200SH replacement — usually within 7-8 hours.