This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI160X170STC, 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 SI160X170STC
The AirTAC SI160 Standard Cylinder SI160X170STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø160mm bore and 170mm stroke, G3/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI160X170STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ160 mm
- Stroke170 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2.0
- StatusDiscontinued → SAI160X170STC
- 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 SI160X170STC
The AirTAC SI160X170STC is a discontinued double-acting ISO 15552 profile cylinder with a 160 mm bore and 170 mm stroke. Delivering 10053 N push force at 0.5 MPa, it features a G3/4 port, M36x2 rod thread, and 50 mm adjustable air cushions. The direct replacement is the SAI160X170STC, retaining the same interface, force, and TC trunnion mount.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The SAI family also adds SAIL and BSAI lock variants the SI lacked. Your -S code denotes a piston magnet for legacy CS1-B/DS1-B sensors.
Airtac SI160 Standard Cylinder SI160X170STC Technical Specifications
| Model | Airtac SI160 Standard Cylinder SI160X170STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI160X170STC |
| Bore size | Ø160 mm |
| Stroke | 170 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 SAI160X170STC 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 SAI160X170STC 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 SI160X170STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 160 | Bore size in mm. |
| ×170 | 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 SI160X170STC Is Used
Heavy Press Forming
Utilizes the 10053 N push force at 0.5 MPa to form thick metal panels, relying on the 50 mm cushion to absorb impact at stroke end.
Large Clamp Fixtures
Secures oversized castings during machining via the TC trunnion mount, allowing pivoting alignment while maintaining high clamping pressure.
Replacing the Airtac SI160 Standard Cylinder SI160X170STC with the SAI160X170STC
To replace the SI160X170STC, order the SAI160X170STC. Verify the ISO 15552 TC trunnion mount, 170 mm stroke, G3/4 port, and the -S magnet for current AirTAC switches. Sizing both ways: a 200 mm bore yields 15708 N [email protected], while a 125 mm bore yields 6136 N. This 160 mm bore produces 10053 N push and 9425 N pull at 0.5 MPa, 14074 N at 0.7 MPa, and a 2050 kgf max at 1.0 MPa. A plain cylinder drifts without live air; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. At 170 mm stroke, rod bending is low, but always guide the load to prevent side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI160X170STC
- ✓ 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 SI160X170STC FAQ
Yes, the SI160X170STC is discontinued. The direct replacement is the SAI160X170STC. It is dimensionally interchangeable per ISO 15552, matching the 160 mm bore, 170 mm stroke, G3/4 port, TC mount, and output force exactly.
This double-acting cylinder has a G3/4 port. It delivers 10053 N push and 9425 N pull at 0.5 MPa, 14074 N push at 0.7 MPa, 18095 N at 0.9 MPa, and a maximum theoretical force of 2050 kgf at 1.0 MPa. Operating speed is 30-500 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI160X170STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI160X170STC replacement — usually within 7-8 hours.