This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X1000H, 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.

The AirTAC SI100 Standard Cylinder SI100X1000H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 1000mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X1000H, which matches its ISO interface, bore, stroke, force and mounting.
The AirTAC SI100X1000H is a discontinued double-acting ISO 15552 profile cylinder featuring a 100mm bore and 1000mm stroke. Built with an extruded aluminum barrel and adjustable air cushions at both ends, it delivers a push force of 3927 N and pull force of 3681 N at 0.5 MPa. The direct replacement is the SAI100X1000H, which matches the original G1/2 port, M20x1.5 rod thread, and ISO 15552 mounting interface for seamless fixture integration.
The SAI upgrade introduces a two Y-shaped one-way piston seal for lower start-up pressure and extended life. This -H variant specifies a Viton FKM seal, raising the operating temperature range to 0-150 C. Because this SKU lacks a magnet (-S), it cannot accept CS1-B/DS1-B sensors.
| Model | Airtac SI100 Standard Cylinder SI100X1000H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X1000H |
| Bore size | Ø100 mm |
| Stroke | 1000 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 SAI100X1000H carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
The SAI100X1000H produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×1000 | 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).
Handles 1000mm ejection of heavy fabricated parts from press beds, using the 3927 N push force to clear large steel panels reliably.
Diverts dense packages along oven-adjacent lines where the Viton H seal survives 0-150 C ambient heat without degrading.
To replace the discontinued SI100X1000H, order the SAI100X1000H, confirming the ISO 15552 mounting interface, 100mm bore, 1000mm stroke, G1/2 port, and Viton H high-temperature seal. Sizing context: the neighboring 80mm bore yields 2513 N push at 0.5 MPa, while the 125mm bore yields 6136 N, so the 100mm bore at 3927 N is correctly sized for medium-heavy loads. Note that a plain cylinder does not hold load on air loss; the cushion only decelerates near stroke end. For load holding, use an external rod lock, pilot check valve, or the SAI lock variants (SAIL or BSAI). Because the 1000mm stroke is long, use external guides to prevent rod-bending and side-load damage. The SAI family also adds the SAIF variant with a built-in 4M valve for bores 32-100.
Replacement checklist
Yes, the SI100X1000H is discontinued. The direct replacement is the SAI100X1000H. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 1000mm stroke, output force, G1/2 port, and mounting accessories.
The G1/2 port bore delivers a push force of 3927 N and pull of 3681 N at 0.5 MPa, 5497 N at 0.7 MPa, 7068 N at 0.9 MPa, and a theoretical max of 801 kgf at 1.0 MPa. It operates at 30-800 mm/s with a 36mm adjustable cushion.
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X1000H replacement — usually within 7-8 hours.