This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X900H, 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 SI100X900H
The AirTAC SI100 Standard Cylinder SI100X900H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 900mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X900H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X900H
- 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 SI100X900H
The AirTAC SI100X900H is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 900 mm stroke. It delivers 3927 N push force at 0.5 MPa via a G1/2 port. The direct replacement is the SAI100X900H, which shares the exact ISO 15552 mounting interface, M20x1.5 rod thread and 36 mm cushions. This -H variant specifies Viton seals for 0-150 C heat, and because it lacks a -S magnet, it cannot accept position sensors.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Note the SAI family adds SAIL, SAIF and BSAI lock/valve variants absent in the SI line.
Airtac SI100 Standard Cylinder SI100X900H Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X900H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X900H |
| Bore size | Ø100 mm |
| Stroke | 900 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 SAI100X900H 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 SAI100X900H 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 SI100X900H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×900 | 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 SI100X900H Is Used
High-Temperature Ejection
Uses the Viton H seal to withstand 0-150 C ambient heat while pushing heavy parts out of molding zones with 3927 N force.
Long-Reach Transfer
The 900 mm stroke spans wide gaps to reposition 200 kg workloads between parallel conveyor lines, guided externally to prevent rod bending.
Pallet Positioning
Leverages the G1/2 port and 100 mm bore to shift loaded pallets along accumulation lanes, relying on adjustable cushions for end-stop deceleration.
Replacing the Airtac SI100 Standard Cylinder SI100X900H with the SAI100X900H
To replace the SI100X900H, order the SAI100X900H and confirm the ISO 15552 mounting fixture, G1/2 port, and Viton H high-temperature seal. Because this 900 mm stroke is long, use external guides to prevent rod bending and side-load damage. If sizing up or down, neighbouring bores (80 mm / 125 mm) offer different force classes, with this 100 mm bore providing 5497 N at 0.7 MPa. A plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding, or specify the SAIL/BSAI lock variant. As a no-S SKU, it cannot take CS1-B/DS1-B sensors.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X900H
- ✓ 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 SI100X900H FAQ
Yes, the AirTAC SI100X900H is discontinued. The direct replacement is the SAI100X900H. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 900 mm stroke, G1/2 port, and mounting interface. The SAI features an upgraded piston seal for lower start-up pressure.
The G1/2 port feeds a 100 mm bore yielding 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 max of 801 kgf at 1.0 MPa. The cylinder operates at 30-800 mm/s and uses a 25 mm rod with M20x1.5 thread.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X900H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X900H replacement — usually within 7-8 hours.