This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX475, 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 SI100BX475
The AirTAC Airtac SI100 Standard Cylinder SI100BX475 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 475mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX475, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke475 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX475
- 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 SI100BX475
The AirTAC SI100BX475 is a discontinued double-acting ISO 15552 profile cylinder featuring a SUS304 stainless piston rod. Delivering 3927 N push force at 0.5 MPa through a G1/2 port, it is replaced by the SAI100BX475 direct equivalent.
The SAI successor maintains identical mounting and force but upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure. Note this SKU lacks a magnet and cannot take sensors.
Airtac SI100 Standard Cylinder SI100BX475 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX475 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX475 |
| Bore size | Ø100 mm |
| Stroke | 475 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 SAI100BX475 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 SAI100BX475 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 SI100BX475
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×475 | 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 SI100BX475 Is Used
Large Press Ejection
Uses the 3927 N push force at 0.5 MPa to eject heavy formed parts from a hydraulic press, with the SUS304 rod resisting coolant corrosion.
Vertical Material Lift
Lowers a 200 kg payload guided by external rails over the 475mm stroke, ensuring the long rod avoids bending under side-load stress.
Pallet Positioning
Stops and indexes loaded pallets on a conveyor using the robust 100mm bore profile barrel and adjustable end cushions.
Replacing the Airtac SI100 Standard Cylinder SI100BX475 with the SAI100BX475
To replace the SI100BX475, order the SAI100BX475. Verify the ISO 15552 interface, 100mm bore, 475mm stroke, G1/2 port, and SUS304 rod. Because this 475mm stroke is long, use external guides to prevent rod bending and side loads. A plain cylinder drifts without air; for load holding use an external rod lock or pilot check valve, or specify SAIL/BSAI lock variants. If downsizing, a 80mm bore yields 2513 N push at 0.5 MPa; if upsizing, a 125mm bore yields 6136 N. This no-magnet SKU cannot accept CS1-B/DS1-B switches.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX475
- ✓ 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 SI100BX475 FAQ
Yes, the SI100BX475 is discontinued. The direct replacement is the SAI100BX475. It is dimensionally interchangeable per ISO 15552, keeping the same 100mm bore, 475mm stroke, 3927 N force, G1/2 port, and mounting interface.
This double-acting cylinder features a G1/2 port and M20x1.5 rod thread. It delivers 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N at 0.9 MPa, and a maximum theoretical force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX475
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX475 replacement — usually within 7-8 hours.