This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X40, 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 SI160 Standard Cylinder SI160X40
The AirTAC Airtac SI160 Standard Cylinder SI160X40 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 40mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X40, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke40 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X40
- 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 SI160 Standard Cylinder SI160X40
The AirTAC SI160X40 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 40 mm stroke, delivering 10053 N push force at 0.5 MPa. It features a G3/4 port and 50 mm adjustable air cushions. AirTAC replaced this legacy unit with the SAI160X40, a direct upgrade retaining the exact ISO 15552 mounting interface, force, and porting.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and longevity. For sensing, note this specific SKU lacks a magnet (-S) and cannot accept CS1-B/DS1-B switches. For high heat, Viton H seals extend operation to 150 C.
Airtac SI160 Standard Cylinder SI160X40 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X40 |
| Bore size | Ø160 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 SAI160X40 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
The SAI160X40 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI160 Standard Cylinder SI160X40
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | 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 SI160 Standard Cylinder SI160X40 Is Used
Heavy Press Operations
Drives substantial forming and stamping presses requiring up to 10053 N of thrust at 0.5 MPa within a short 40 mm travel.
Industrial Pallet Clamping
Secures heavy pallets and large workpieces during machining or transfer, utilizing the 160 mm bore's robust 9425 N pull force.
Mold Ejection Systems
Provides high-force ejection in injection molding setups, benefiting from the 50 mm adjustable cushions to protect tooling.
Replacing the Airtac SI160 Standard Cylinder SI160X40 with the SAI160X40
To replace the SI160X40, order the SAI160X40 ensuring your ISO 15552 mounting accessories (foot, flange, or trunnion) and G3/4 porting match. This non-magnet SKU cannot support sensors; order an SAI variant with an S suffix if position detection is needed. Sizing both ways: a 125 mm bore yields 6136 N push at 0.5 MPa, while a 200 mm bore yields 15708 N. The theoretical maximum force here is 2050 kgf at 1.0 MPa. Because this is a plain double-acting cylinder, it will not hold a load without live air—the cushions only decelerate. For suspended loads, use an external pilot check valve or explore the SAIL or BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X40
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI160 Standard Cylinder SI160X40 FAQ
Yes, the SI160X40 is discontinued. The direct replacement is the AirTAC SAI160X40. It shares the identical ISO 15552 mounting interface, 160 mm bore, 40 mm stroke, output force, and G3/4 port, fitting existing fixtures perfectly while adding an upgraded piston seal.
This double-acting cylinder uses a G3/4 air port. At 0.5 MPa it provides 10053 N push and 9425 N pull force. At 0.7 MPa push is 14074 N, and 18095 N at 0.9 MPa. The theoretical maximum is 2050 kgf at 1.0 MPa, with an operating speed of 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X40
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X40 replacement — usually within 7-8 hours.