This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X250SCB, 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 SI100X250SCB
The AirTAC Airtac SI100 Standard Cylinder SI100X250SCB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 250mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X250SCB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X250SCB
- 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 SI100X250SCB
The AirTAC SI100X250SCB is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 250mm stroke. It delivers 3927N push and 3681N pull at 0.5MPa via a G1/2 port. The direct replacement is the SAI100X250SCB, matching the bore, stroke, force, port and CB clevis mounting interface for existing fixtures.
The SAI upgrade introduces a two-piece Y-shaped piston seal for low start-up pressure and long life. The family adds SAIL lock, SAIF valve and BSAI clamp variants the SI lacked. A plain cylinder drifts on air loss; cushions only decelerate.
Airtac SI100 Standard Cylinder SI100X250SCB Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X250SCB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X250SCB |
| Bore size | Ø100 mm |
| Stroke | 250 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 SAI100X250SCB 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 SAI100X250SCB 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 SI100X250SCB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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 SI100X250SCB Is Used
Heavy Press Clamping
Secures large metal castings during machining operations, utilizing the 3927N push force at 0.5MPa to prevent workpiece shifting under high cutting loads.
Bulk Material Diverting
Drives robust routing flaps on high-capacity packaging lines, relying on the 36mm adjustable air cushions to decelerate the 25mm rod smoothly at stroke ends.
Replacing the Airtac SI100 Standard Cylinder SI100X250SCB with the SAI100X250SCB
To replace the SI100X250SCB, order the SAI100X250SCB. Confirm the ISO 15552 mounting interface, 100mm bore, 250mm stroke, G1/2 port (PT/G/NPT thread options) and CB clevis accessory. The -S suffix means it has a piston magnet for CS1-B/DS1-B sensors; the SAI replacement uses current AirTAC switches. If you need more force, the 125mm bore offers 6136N push at 0.5MPa; if less is acceptable, the 80mm bore provides 2513N. Because stroke is 250mm, ensure guide alignment to prevent rod bending and side-load wear. A plain cylinder does not hold load without live air; for holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X250SCB
- ✓ 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 SI100X250SCB FAQ
Yes, the AirTAC SI100X250SCB is discontinued. The direct replacement is the SAI100X250SCB. It is dimensionally interchangeable per ISO 15552, offering the same 100mm bore, 250mm stroke, output force, G1/2 port and CB clevis mounting interface.
This double-acting cylinder has a G1/2 port. The thrust is 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical maximum of 801kgf at 1.0MPa. Speed range is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X250SCB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X250SCB replacement — usually within 7-8 hours.