This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X70, 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 SI100X70
The AirTAC SI100 Standard Cylinder SI100X70 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 70mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X70, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke70 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X70
- 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 SI100X70
The AirTAC SI100X70 is a discontinued double-acting ISO 15552 profile cylinder, delivering a push force of 3927 N at 0.5 MPa. AirTAC replaced it with the SAI100X70 direct, which retains the exact 100mm bore, 70mm stroke, G1/2 port and mounting interface.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this SKU lacks a magnet, so it cannot accept CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X70 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X70 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X70 |
| Bore size | Ø100 mm |
| Stroke | 70 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 SAI100X70 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 SAI100X70 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 SI100X70
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×70 | 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 SI100X70 Is Used
Heavy Pressing
Drives robust stamping and pressing fixtures requiring substantial thrust, utilizing the 3927 N push force at 0.5 MPa.
Pallet Diverting
Actuates heavy-duty pallet stops and diverters along high-capacity material handling lines with reliable kinetic energy absorption.
Load Elevation
Lifts vertical loads up to approximately 200 kg safely, benefiting from the 25mm piston rod and 36mm adjustable end cushions.
Replacing the Airtac SI100 Standard Cylinder SI100X70 with the SAI100X70
To replace the SI100X70, order the SAI100X70 and confirm your ISO 15552 mounting interface, 70mm stroke, G1/2 port (PT/G/NPT) and accessory type. If you need position sensing, you must select an SAI variant with a magnet, as this specific non-S SKU cannot take a switch. Sizing both ways: the neighboring 80mm bore yields 2513 N push at 0.5 MPa, while the 125mm bore yields 6136 N. A plain cylinder drifts on air loss—the cushion only decelerates—so for load holding use an external pilot check valve or the SAIL/BSAI lock variants. The SAIF variant integrates a 4M valve if you need self-actuation.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X70
- ✓ 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 SI100X70 FAQ
Yes, the SI100X70 is discontinued. The direct replacement is the SAI100X70. It is dimensionally interchangeable per ISO 15552, keeping the same 100mm bore, 70mm stroke, output force, G1/2 port and mounting fixtures.
This double-acting cylinder features a G1/2 port. It delivers a push force of 3927 N and pull of 3681 N at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N at 0.9 MPa, and a theoretical max of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X70
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X70 replacement — usually within 7-8 hours.