This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X740SCB, 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 SI100X740SCB
The AirTAC Airtac SI100 Standard Cylinder SI100X740SCB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 740mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X740SCB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke740 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X740SCB
- 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 SI100X740SCB
The AirTAC SI100X740SCB is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 740mm stroke. Delivering 3927 N push force at 0.5 MPa, it is replaced by the SAI100X740SCB direct equivalent. This upgrade retains the exact G1/2 port, M20x1.5 rod thread, and CB clevis mounting interface.
The SAI replacement features an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. The SAI family also adds SAIL lock and BSAI clamp-lock variants the SI lacked.
Airtac SI100 Standard Cylinder SI100X740SCB Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X740SCB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X740SCB |
| Bore size | Ø100 mm |
| Stroke | 740 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 SAI100X740SCB 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 SAI100X740SCB 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 SI100X740SCB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×740 | 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 SI100X740SCB Is Used
Heavy Press Clamping
Generates 5497 N of push force at 0.7 MPa to secure heavy metal workpieces during machining or stamping operations.
Pallet Diverting
The 740mm stroke extends across wide rollers to redirect large pallets, utilizing the CB clevis for smooth pivot articulation.
Replacing the Airtac SI100 Standard Cylinder SI100X740SCB with the SAI100X740SCB
To replace the SI100X740SCB, order the SAI100X740SCB. Confirm the ISO 15552 mounting interface, 100mm bore, 740mm stroke, G1/2 port (PT/G/NPT), CB clevis mount, and the -S magnet for CS1-B/DS1-B switches. The SAI uses current AirTAC switches. If downsizing, a 80mm bore yields 2513 N push at 0.5 MPa; if upsizing, a 125mm bore yields 6136 N. A plain cylinder drifts on air loss—the cushion only decelerates—so use a pilot check valve or SAIL/BSAI lock for held loads. At 740mm, prevent rod bending by using an external guide to absorb side loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X740SCB
- ✓ 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 SI100X740SCB FAQ
Yes, the SI100X740SCB is discontinued. The direct replacement is the SAI100X740SCB, which shares the same ISO 15552 mounting interface, 100mm bore, 740mm stroke, force, and G1/2 port.
It features a G1/2 port. The force ratings are: 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 of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X740SCB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X740SCB replacement — usually within 7-8 hours.