This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160BX850S, 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 SI160BX850S
The AirTAC SI160 Standard Cylinder SI160BX850S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 850mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160BX850S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke850 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160BX850S
- 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 SI160BX850S
The AirTAC SI160BX850S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 850 mm stroke. Delivering 10053 N push force at 0.5 MPa, it features a SUS304 stainless piston rod (-B) and a magnetic piston (-S) for CS1-B/DS1-B sensors. The direct replacement is the SAI160BX850S, sharing the exact G3/4 port, M36x2 thread, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life, while retaining the 50 mm adjustable cushions. Note that standard cylinders drift without air; the SAIL lock or BSAI clamp-lock variants offer secure load holding.
Airtac SI160 Standard Cylinder SI160BX850S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160BX850S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160BX850S |
| Bore size | Ø160 mm |
| Stroke | 850 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 SAI160BX850S 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 SAI160BX850S 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 SI160BX850S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×850 | 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 SI160BX850S Is Used
Heavy Machinery Ejection
Provides the 10053 N push force needed to eject heavy formed parts from large presses, utilizing the 850 mm stroke for full clearance.
Automated Press Lowering
Controls the descent of heavy platens at 30-500 mm/s, relying on the 50 mm adjustable cushions to decelerate the 512 kg load safely.
Pallet Dispenser Actuation
Drives the robust mechanism of automated pallet dispensers, where the SUS304 rod resists humidity and the magnetic piston tracks position.
Replacing the Airtac SI160 Standard Cylinder SI160BX850S with the SAI160BX850S
To replace the SI160BX850S, order the SAI160BX850S. Verify the ISO 15552 mounting interface, 850 mm stroke, G3/4 port, and SUS304 rod (-B). The -S magnet enables current AirTAC switches. Operating at 30-500 mm/s, it yields 10053 N push and 9425 N pull at 0.5 MPa. If undersizing, a 125 mm bore gives 6136 N; if oversizing, a 200 mm bore provides 15708 N. At 850 mm, prevent rod bending by using external guides to manage side loads. The cushion only decelerates; it does not hold load. For secure positioning without air, use an external pilot check valve or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160BX850S
- ✓ 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 SI160BX850S FAQ
Yes, the SI160BX850S is discontinued. The direct replacement is the SAI160BX850S. It matches the ISO 15552 mounting interface, 160 mm bore, 850 mm stroke, force, and G3/4 port, fitting existing fixtures perfectly.
It features a G3/4 port and delivers 10053 N push and 9425 N pull at 0.5 MPa. At 0.7 MPa push is 14074 N, and 18095 N at 0.9 MPa. The theoretical maximum force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160BX850S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160BX850S replacement — usually within 7-8 hours.