This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX650SH, 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 SI100BX650SH
The AirTAC Airtac SI100 Standard Cylinder SI100BX650SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 650mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX650SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke650 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX650SH
- 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 SI100BX650SH
The AirTAC SI100BX650SH is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 650mm stroke. Featuring a SUS304 stainless piston rod (-B) and Viton H high-temperature seals (0-150 C), it delivers 3927 N push force at 0.5 MPa. The direct replacement is the SAI100BX650SH, which matches the G1/2 port, M20x1.5 thread, and ISO 15552 mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. The built-in magnet (-S) works with legacy CS1-B/DS1-B sensors, while the SAI family adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI100 Standard Cylinder SI100BX650SH Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX650SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX650SH |
| Bore size | Ø100 mm |
| Stroke | 650 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 SAI100BX650SH 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 SAI100BX650SH 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 SI100BX650SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×650 | 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 SI100BX650SH Is Used
High-Force Clamping
Secures heavy steel fabrication blocks during machining, utilizing the 5497 N push force at 0.7 MPa with the SUS304 rod resisting coolant corrosion.
Pallet Diversion
Actuates large-scale routing gates on assembly lines, where the 650mm stroke provides full lane clearance for oversized industrial pallets.
Replacing the Airtac SI100 Standard Cylinder SI100BX650SH with the SAI100BX650SH
To replace the SI100BX650SH, order the SAI100BX650SH. It is a direct per ISO 15552 mounting-interface dimensions, keeping the 100mm bore, 650mm stroke, 5497 N push force at 0.7 MPa, and G1/2 port. Retain your mounting accessory and confirm the -S magnet for current AirTAC switches (legacy used CS1-B/DS1-B). When sizing both ways, a 125mm bore offers 6136 N push at 0.5 MPa, while an 80mm bore provides 2513 N. Note: at 650mm stroke, prevent rod bending by using an external guide to handle side loads. A plain cylinder drifts on air loss; for load holding use the SAIL lock, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX650SH
- ✓ 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 SI100BX650SH FAQ
Yes, the SI100BX650SH is discontinued. The direct replacement is the SAI100BX650SH. It features the same ISO 15552 mounting interface, 100mm bore, 650mm stroke, G1/2 port, and output force, fitting existing fixtures perfectly.
The G1/2 port bore delivers a push force of 3927 N and pull of 3681 N at 0.5 MPa. At 0.7 MPa push is 5497 N, and 7068 N at 0.9 MPa. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX650SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX650SH replacement — usually within 7-8 hours.