This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160AX40, 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 SI160AX40
The AirTAC Airtac SI160 Standard Cylinder SI160AX40 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 SAI160AX40, 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 → SAI160AX40
- 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 SI160AX40
The AirTAC SI160AX40 is a discontinued double-acting ISO 15552 profile cylinder featuring a 160mm bore and 40mm stroke. Delivering 10053 N push force at 0.5 MPa, it utilizes a G3/4 port, an M36x2 rod thread, and 50mm adjustable air cushions. The direct replacement is the SAI160AX40, matching the interface, force, and mounting while upgrading the piston seal to two Y-shaped one-way elements for lower start-up pressure.
This SKU includes the SUS420J2 stainless steel rod option for corrosion resistance but lacks a magnet, meaning it cannot accept position switches. Note that plain cylinders drift without live air; use an external rod lock or SAIL/BSAI variant for holding.
Airtac SI160 Standard Cylinder SI160AX40 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160AX40 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160AX40 |
| 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 SAI160AX40 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 SAI160AX40 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 SI160AX40
| 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 SI160AX40 Is Used
Heavy Press Operations
Applies 10053 N of thrust at 0.5 MPa for forming, stamping, and pressing rigid components in automated fabrication lines.
Massive Platen Lowering
Controls the descent of heavy platens using the 50mm adjustable air cushions, safely decelerating the 40mm stroke near the end of travel.
High-Force Actuation
Drives robust industrial clamps and heavy-duty mechanisms where the SUS420J2 stainless rod resists moisture and corrosion.
Replacing the Airtac SI160 Standard Cylinder SI160AX40 with the SAI160AX40
To replace the SI160AX40, order the SAI160AX40. Verify the ISO 15552 mounting interface, 160mm bore, 40mm stroke, G3/4 port, and SUS420J2 rod. Because this non-magnet SKU cannot take CS1-B/DS1-B sensors, add an -S suffix if sensing is needed. Sizing both ways: a 125mm bore yields 6136 N push at 0.5 MPa, while a 200mm bore yields 15708 N. This plain cylinder does not hold load on air loss; the 50mm cushion only decelerates. For load holding, select the SAIL or BSAI lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160AX40
- ✓ 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 SI160AX40 FAQ
Yes, the SI160AX40 is discontinued. The direct replacement is the SAI160AX40. It is dimensionally interchangeable per ISO 15552, retaining the same 160mm bore, 40mm stroke, G3/4 port, and mounting fixtures, but features an upgraded piston seal.
The G3/4 port feeds a cylinder delivering 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, 18095 N push at 0.9 MPa, and a theoretical max of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160AX40
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160AX40 replacement — usually within 7-8 hours.