This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X770S, 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 SI160X770S
The AirTAC SI160 Standard Cylinder SI160X770S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 770mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X770S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke770 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X770S
- 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 SI160X770S
The AirTAC SI160X770S is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 770 mm stroke. Delivering 10053 N push force at 0.5 MPa, it features a G3/4 port and a 40 mm carbon steel rod. The direct replacement is the SAI160X770S, retaining the exact ISO 15552 mounting interface, bore, stroke, force, and port size.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. The -S suffix indicates a piston magnet for legacy CS1-B/DS1-B sensors, while the SAI family expands capabilities with SAIL and BSAI lock variants absent in the SI line.
Airtac SI160 Standard Cylinder SI160X770S Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X770S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X770S |
| Bore size | Ø160 mm |
| Stroke | 770 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 SAI160X770S 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 SAI160X770S 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 SI160X770S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×770 | 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 SI160X770S Is Used
Heavy Machinery Forming
Drives large presses and forming fixtures requiring 10053 N thrust at 0.5 MPa, utilizing the 770 mm stroke to actuate heavy tooling over extended distances.
Large Assembly Actuation
Shifts heavy structural components along 770 mm paths within ISO 15552 fixtures, relying on adjustable 50 mm air cushions to decelerate the 40 mm rod smoothly.
Replacing the Airtac SI160 Standard Cylinder SI160X770S with the SAI160X770S
To replace the SI160X770S, order the SAI160X770S and verify the ISO 15552 mounting interface, 770 mm stroke, G3/4 port, and M36x2 rod thread. The -S magnet equates to legacy CS1-B/DS1-B switches, whereas the SAI uses current AirTAC sensors. If sizing alternatives, consider neighbouring bores (125 mm or 200 mm) against the 10053 N push force at 0.5 MPa. Because this is a 770 mm stroke, prevent rod bending by using an external guide to absorb side loads. A plain cylinder drifts on air loss; for load holding, specify the SAIL lock variant, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X770S
- ✓ 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 SI160X770S FAQ
Yes, the SI160X770S is discontinued. The direct replacement is the SAI160X770S. It is dimensionally interchangeable per ISO 15552, keeping the same 160 mm bore, 770 mm stroke, 10053 N force, G3/4 port, and mounting accessories.
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 at 0.9 MPa it is 18095 N. The theoretical maximum force is 2050 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X770S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X770S replacement — usually within 7-8 hours.