This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X50CB, 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 SI100X50CB
The AirTAC Airtac SI100 Standard Cylinder SI100X50CB 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 SAI100X50CB, 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 → SAI100X50CB
- 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 SI100X50CB
The AirTAC SI100X50CB is a discontinued double-acting ISO 15552 profile cylinder, delivering 3927 N push force at 0.5 MPa through its 100 mm bore. It features a 25 mm carbon steel rod, M20x1.5 thread, 36 mm cushions, and a fixed G1/2 port. Because this SKU lacks the -S magnet, it cannot accept a position sensor.
You must order the direct replacement SAI100X50CB. It shares the exact ISO 15552 CB clevis mounting interface, 50 mm stroke, and force ratings. The SAI upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure.
Airtac SI100 Standard Cylinder SI100X50CB Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X50CB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X50CB |
| 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 SAI100X50CB 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 SAI100X50CB 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 SI100X50CB
| 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 SI100X50CB Is Used
Heavy-Duty Pressing
Drives high-force stamping and forming operations, delivering up to 5497 N at 0.7 MPa to seat bearings or assemble heavy mechanical components.
Pallet Diverting
Actuates robust routing gates or stops on high-mass conveyor lines, using the CB clevis mount to handle severe side-loading during heavy pallet transfers.
Lift Gate Actuation
Raises and lowers material lift gates, safely moving loads up to 2356 N while relying on external check valves to prevent drift on air loss.
Replacing the Airtac SI100 Standard Cylinder SI100X50CB with the SAI100X50CB
To replace this SI100X50CB with the SAI100X50CB, verify the ISO 15552 CB clevis mount, 100 mm bore, 50 mm stroke, and G1/2 port. This non-magnet SKU cannot fit legacy CS1-B/DS1-B sensors; order a -S SAI if sensing is required. If you need more force than the 3927 N at 0.5 MPa (or 5497 N at 0.7 MPa), step up to a 125 mm bore. If less is needed, an 80 mm bore gives 2513 N. Note that a plain cylinder drifts on air loss; for load holding, use the SAIL or BSAI lock variants, or an external pilot check valve. The SAIF variant adds a built-in 4M valve if space is tight.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X50CB
- ✓ 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 SI100X50CB FAQ
Yes, the AirTAC SI100X50CB is discontinued. The direct replacement is the SAI100X50CB. It is a true ISO 15552 profile cylinder with the identical 100 mm bore, 50 mm stroke, 3927 N force, G1/2 port, and CB clevis mounting interface, fitting existing fixtures perfectly.
This double-acting cylinder has a fixed G1/2 air port. The thrust 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 maximum of 801 kgf at 1.0 MPa. It operates at 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X50CB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X50CB replacement — usually within 7-8 hours.