This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X975H, 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 SI100X975H
The AirTAC Airtac SI100 Standard Cylinder SI100X975H is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 975mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X975H, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke975 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X975H
- 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 SI100X975H
The AirTAC SI100X975H is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 975mm stroke. Featuring a high-temperature Viton H seal (0 to 150 C), it delivers 3927 N push at 0.5 MPa through a G1/2 port. AirTAC replaced this EOL unit with the SAI100X975H, a direct upgrade sharing the exact ISO 15552 mounting interface, M20x1.5 rod thread, and 801 kgf max force.
The SAI successor introduces an upgraded piston seal with two Y-shaped one-way elements for lower start-up pressure and longer life. Because this specific SKU lacks the -S magnet, it cannot accept position sensors.
Airtac SI100 Standard Cylinder SI100X975H Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X975H |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X975H |
| Bore size | Ø100 mm |
| Stroke | 975 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 SAI100X975H 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 SAI100X975H 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 SI100X975H
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×975 | 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 SI100X975H Is Used
High-Temperature Forming Press
Handles heavy clamping tasks in hot environments using the Viton H seal, delivering 5497 N at 0.7 MPa for metal or composite molding.
Long-Stroke Material Transfer
Moves heavy workpieces across a 975mm span, requiring external guide rails to prevent rod bending during extended horizontal travel.
Pallet Positioning Gate
Actuates large sorting gates with a theoretical max output of 801 kgf, shifting loaded pallets reliably without live-air load holding.
Replacing the Airtac SI100 Standard Cylinder SI100X975H with the SAI100X975H
To replace the SI100X975H, order the SAI100X975H. Confirm the ISO 15552 mounting accessory (LB, FA, CA, TC, etc.), the G1/2 port, and the M20x1.5 rod thread. The SAI family also adds SAIL (air-released lock), SAIF (built-in 4M valve), and BSAI (clamp-lock) variants the SI lacked. If sizing up or down, neighboring bores are 80mm and 125mm; at 0.5 MPa this 100mm bore yields 3927 N push and 3681 N pull. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock or pilot check valve for load holding. Finally, the 975mm stroke demands external guides to prevent rod bending and side-load damage.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X975H
- ✓ 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 SI100X975H FAQ
Yes, the SI100X975H is discontinued. The direct replacement is the AirTAC SAI100X975H. It shares the same ISO 15552 mounting interface, 100mm bore, 975mm 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 is 801 kgf at 1.0 MPa. It operates at 30-800 mm/s with a 36mm adjustable air cushion.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X975H
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X975H replacement — usually within 7-8 hours.