This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X50SCB, 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 SI100X50SCB
The AirTAC Airtac SI100 Standard Cylinder SI100X50SCB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 50mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X50SCB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke50 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X50SCB
- 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 SI100X50SCB
The AirTAC SI100X50SCB is a discontinued double-acting ISO 15552 profile cylinder featuring a 100 mm bore, 50 mm stroke, and a CB clevis mount. Delivering 3927 N push force at 0.5 MPa, it is replaced by the SAI100X50SCB. This direct upgrade matches the G1/2 port, M20x1.5 rod thread, and output force.
The SAI replacement upgrades the piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI100 Standard Cylinder SI100X50SCB Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X50SCB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X50SCB |
| Bore size | Ø100 mm |
| Stroke | 50 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 SAI100X50SCB 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 SAI100X50SCB 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 SI100X50SCB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×50 | 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 SI100X50SCB Is Used
Heavy Press Clamping
Ideal for applying 3927 N of clamping force to secure heavy metal components during machining or pressing operations.
Pallet Diverting
Provides the robust actuation needed to divert heavy pallets on a conveyor line using the CB clevis mount for pivot.
Material Lift Gates
Suitable for lifting and lowering heavy material handling gates, safely managing vertical loads around 200 kg.
Replacing the Airtac SI100 Standard Cylinder SI100X50SCB with the SAI100X50SCB
To replace the SI100X50SCB, order the SAI100X50SCB. It drops into existing fixtures via the ISO 15552 mounting interface, matching the 100 mm bore, 50 mm stroke, G1/2 port, CB clevis mount, and -S magnet for CS1-B/DS1-B switches. When sizing, neighboring bores offer different force classes: an 80 mm bore yields 2513 N push at 0.5 MPa, while a 125 mm bore yields 6136 N. The plain cylinder does not hold load without live air; the cushion only decelerates. For load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X50SCB
- ✓ 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 SI100X50SCB FAQ
Yes, the SI100X50SCB is discontinued. The direct replacement is the SAI100X50SCB. It shares the same ISO 15552 mounting interface, 100 mm bore, 50 mm stroke, G1/2 port, and CB clevis mount, fitting existing fixtures perfectly.
The bore is 100 mm with a G1/2 air port. Force output is 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 SAI100X50SCB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X50SCB replacement — usually within 7-8 hours.