This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX210S, 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 SI100BX210S
The AirTAC SI100 Standard Cylinder SI100BX210S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 210mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX210S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke210 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX210S
- 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 SI100BX210S
The AirTAC SI100BX210S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 210mm stroke. It features a SUS304 stainless piston rod (-B) and a built-in magnet (-S) for legacy CS1-B/DS1-B switches. Delivering 3927 N push force at 0.5 MPa through a G1/2 port, its direct replacement is the SAI100BX210S.
The SAI upgrade retains identical ISO 15552 mounting dimensions but adds a two Y-shaped one-way piston seal for low start-up pressure. Note that plain cylinders drift without air; use the SAIL lock or BSAI clamp-lock variants for load holding.
Airtac SI100 Standard Cylinder SI100BX210S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX210S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX210S |
| Bore size | Ø100 mm |
| Stroke | 210 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 SAI100BX210S 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 SAI100BX210S 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 SI100BX210S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×210 | 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 SI100BX210S Is Used
Heavy-Duty Pressing
Drives robust clamping and pressing fixtures requiring up to 3927 N of thrust at 0.5 MPa, utilizing the 210mm stroke to secure large components.
Material Ejection
Ejects heavy molded parts from machinery, using the adjustable 36mm air cushions at both ends to decelerate the 100mm bore smoothly.
Replacing the Airtac SI100 Standard Cylinder SI100BX210S with the SAI100BX210S
To replace the SI100BX210S, order the SAI100BX210S. Confirm the ISO 15552 mounting interface, the 100mm bore, 210mm stroke, G1/2 port, and the -B SUS304 rod. The -S magnet enables current AirTAC switches (replacing legacy CS1-B/DS1-B). At 0.5 MPa it pushes 3927 N; neighbouring bores offer 2513 N (80mm) or 6136 N (125mm). For loads over 200 kg or strokes beyond 300mm, use external guides to prevent rod bending. Because standard cylinders only decelerate and cannot hold load on air loss, specify a SAIL or BSAI lock variant if braking is required.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX210S
- ✓ 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 SI100BX210S FAQ
Yes, the SI100BX210S is discontinued. The direct replacement is the SAI100BX210S. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 210mm stroke, 3927 N force, G1/2 port, and mounting interface.
This double-acting cylinder uses a G1/2 port. The thrust 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 maximum of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX210S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX210S replacement — usually within 7-8 hours.