This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X370, 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 SI100X370
The AirTAC SI100 Standard Cylinder SI100X370 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 370mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X370, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke370 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X370
- 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 SI100X370
The AirTAC SI100X370 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 370mm stroke. Delivering 3927 N push at 0.5 MPa via a G1/2 port, it is replaced by the SAI100X370 direct. This successor matches the exact bore, stroke, force, and ISO 15552 mounting interface for existing fixtures.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. Note this non-magnet SKU cannot take a sensor; legacy CS1-B/DS1-B switches required the -S option.
Airtac SI100 Standard Cylinder SI100X370 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X370 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X370 |
| Bore size | Ø100 mm |
| Stroke | 370 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 SAI100X370 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 SAI100X370 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 SI100X370
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×370 | 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 SI100X370 Is Used
Heavy Press Clamping
Secures large steel plates in machining centers, utilizing the 3927 N push force at 0.5 MPa to hold components rigidly under cutting loads.
Automated Assembly Indexing
Drives robust linear shuttles on automotive assembly lines, benefiting from the 30-800 mm/s speed range and 100mm bore power to shift heavy tooling carriages.
Replacing the Airtac SI100 Standard Cylinder SI100X370 with the SAI100X370
To replace the SI100X370, order the SAI100X370. Confirm the ISO 15552 mounting interface, 100mm bore, 370mm stroke, G1/2 port (PT/G/NPT), and your clevis or flange accessory. Because this SKU lacks a magnet, it cannot accept position sensors. If sizing up or down, note the 80mm bore yields 2513 N push while the 125mm yields 6136 N at 0.5 MPa. At 370mm, add external guides to prevent rod bending and side-load wear. A plain cylinder drifts on air loss; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X370
- ✓ 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 SI100X370 FAQ
Yes, the AirTAC SI100X370 is discontinued. The direct replacement is the SAI100X370. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 370mm stroke, output force, G1/2 port, and mounting accessories.
The 100mm bore features a G1/2 port. It delivers 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N push at 0.9 MPa, and a theoretical max force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X370
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X370 replacement — usually within 7-8 hours.