This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX500, 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 SI160BX500
The AirTAC SI160 Standard Cylinder SI160BX500 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 500mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX500, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke500 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX500
- 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 SI160BX500
The AirTAC SI160BX500 is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 500 mm stroke. It delivers 10053 N push force at 0.5 MPa through a G3/4 port. The direct replacement is the SAI160BX500, matching the interface, force, and mounts. This specific SKU uses a SUS304 stainless steel piston rod (the -B option) for corrosion resistance, and because it lacks a magnet (-S), 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. The family now includes SAIL and BSAI lock variants absent from the SI line. Note that a plain cylinder drifts on air loss; the cushion only decelerates.
Airtac SI160 Standard Cylinder SI160BX500 Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX500 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX500 |
| Bore size | Ø160 mm |
| Stroke | 500 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 SAI160BX500 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 SAI160BX500 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 SI160BX500
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×500 | 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 SI160BX500 Is Used
Heavy Press Stamping
Drives large metal forming presses requiring sustained 10053 N thrust at 0.5 MPa over a 500 mm travel distance.
Large Mold Handling
Shifts substantial injection molds on production lines, utilizing the corrosion-resistant SUS304 rod in humid environments.
Replacing the Airtac SI160 Standard Cylinder SI160BX500 with the SAI160BX500
To replace this SI160BX500, order the SAI160BX500 to retain the exact ISO 15552 mounting interface, 160 mm bore, 500 mm stroke, G3/4 port, and M36x2 rod thread. Confirm your mounting accessory (LB, FA, TC, etc.) and remember this non-magnetic SKU cannot fit switches. If you need less force, step down to a 125 mm bore (6136 N push @0.5 MPa); if you need more, a 200 mm bore gives 15708 N. Because this is a 500 mm stroke, use external guides to prevent rod bending under side loads. For load holding on air loss, add an external pilot check valve or rod lock, as the cushion only decelerates.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX500
- ✓ 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 SI160BX500 FAQ
Yes, the SI160BX500 is discontinued. The direct replacement is the SAI160BX500. It is dimensionally interchangeable per ISO 15552, retaining the same 160 mm bore, 500 mm stroke, 10053 N force, G3/4 port, and mounting interface.
It operates at 30-500 mm/s using a G3/4 port. Forces are: 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. It features a 50 mm adjustable air cushion at each end.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX500
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX500 replacement — usually within 7-8 hours.