This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X145, 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 SI100X145
The AirTAC Airtac SI100 Standard Cylinder SI100X145 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 145mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X145, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke145 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X145
- 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 SI100X145
The AirTAC SI100X145 is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 145 mm stroke. It delivers a push force of 3927 N at 0.5 MPa (5497 N at 0.7 MPa) and uses a G1/2 port. The direct replacement is the SAI100X145, which shares the exact ISO 15552 mounting interface, bore, stroke, output force, port and mounting accessories.
The SAI upgrade introduces a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This specific SI100X145 SKU lacks the -S magnet, meaning it cannot accept CS1-B or DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X145 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X145 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X145 |
| Bore size | Ø100 mm |
| Stroke | 145 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 SAI100X145 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 SAI100X145 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 SI100X145
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×145 | 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 SI100X145 Is Used
Heavy-Duty Pressing
Applies 5497 N of push force at 0.7 MPa for seating bearings and assembling heavy mechanical components.
Pallet Diversion
Uses the 145 mm stroke to push loaded pallets onto secondary packaging lines without requiring long cylinder spans.
Replacing the Airtac SI100 Standard Cylinder SI100X145 with the SAI100X145
To replace the discontinued SI100X145, order the SAI100X145 and confirm your ISO 15552 mounting interface, 100 mm bore, 145 mm stroke, G1/2 port (PT/G/NPT) and mounting accessory. If sizing up or down, neighboring bores are 80 mm and 125 mm; at 0.5 MPa the 80 mm pushes 2513 N, while the 125 mm pushes 6136 N. Note that a plain cylinder drifts on air loss and the cushion only decelerates near stroke end—for a held load use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variant. The SAIF variant (bores 32-100) integrates a 4M valve if you need self-contained control. Because this SKU lacks the -S magnet, it cannot take a sensor.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X145
- ✓ 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 SI100X145 FAQ
Yes, the SI100X145 is discontinued. The direct replacement is the SAI100X145. It is dimensionally interchangeable per ISO 15552, matching the 100 mm bore, 145 mm stroke, output force, G1/2 port and mounting fixtures.
The 100 mm bore features a G1/2 port. It generates a push force of 3927 N and pull of 3681 N at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N push at 0.9 MPa, and a maximum theoretical force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X145
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X145 replacement — usually within 7-8 hours.