This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X170STC, 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 SI100 Standard Cylinder SI100X170STC
The AirTAC Airtac SI100 Standard Cylinder SI100X170STC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 170mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X170STC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke170 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X170STC
- 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 SI100 Standard Cylinder SI100X170STC
The AirTAC SI100X170STC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 170mm stroke. It delivers a push force of 3927 N at 0.5 MPa and features a G1/2 port. The direct replacement is the SAI100X170STC, which shares the exact same ISO 15552 mounting interface, force class, and TC trunnion mount.
The SAI upgrade introduces an improved piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The original SI utilized CS1-B/DS1-B legacy sensors via its -S magnet, while the SAI family also adds SAIL, SAIF, and BSAI lock or valve variants that the SI lacked.
Airtac SI100 Standard Cylinder SI100X170STC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X170STC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X170STC |
| Bore size | Ø100 mm |
| Stroke | 170 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 36 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI100X170STC carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAI100X170STC produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI100 Standard Cylinder SI100X170STC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | 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 SI100 Standard Cylinder SI100X170STC Is Used
Heavy-Duty Pressing
Applies the 3927 N push force at 0.5 MPa to seat bearings or form light gauge materials in automated machinery.
Pallet Diversion
Uses the TC trunnion mount to pivot a heavy lane deflector, smoothly handling high-mass product flows.
Replacing the Airtac SI100 Standard Cylinder SI100X170STC with the SAI100X170STC
To replace the SI100X170STC, order the SAI100X170STC. Confirm the ISO 15552 TC trunnion mounting interface, the 170mm stroke, the G1/2 port, and the -S magnet for position sensing. The SAI accepts current AirTAC switches instead of the legacy CS1-B/DS1-B set. If you need to scale up or down, neighboring bores like 80mm or 125mm will alter the 0.5 MPa push force (currently 3927 N). Note that a standard cylinder drifts on air loss because the air cushion only decelerates near stroke end; for rigid load holding, specify the SAIL or BSAI lock variant, or use an external pilot check valve. Since this 170mm stroke is under 300mm, severe rod-bending side loads are less critical than on longer strokes, but proper guide alignment remains essential.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X170STC
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI100 Standard Cylinder SI100X170STC FAQ
Yes, the AirTAC SI100X170STC is discontinued. The direct replacement is the SAI100X170STC. It is dimensionally interchangeable per the ISO 15552 mounting interface, maintaining the same 100mm bore, 170mm stroke, G1/2 port, and TC trunnion mount.
This double-acting cylinder has a G1/2 port. It generates a push force of 3927 N and a pull force of 3681 N at 0.5 MPa. At 0.7 MPa the push force is 5497 N, and at 0.9 MPa it is 7068 N. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X170STC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X170STC replacement — usually within 7-8 hours.