This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X135, 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 SI100X135
The AirTAC Airtac SI100 Standard Cylinder SI100X135 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 135mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X135, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke135 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X135
- 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 SI100X135
The AirTAC SI100X135 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 135mm stroke, delivering 3927 N push force at 0.5 MPa. Because this legacy unit lacks a -S magnet, it cannot accept a position sensor. AirTAC's direct replacement is the SAI100X135, retaining the exact G1/2 port, M20x1.5 thread, and mounting interface.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and extended life. If high-temperature operation is needed, a Viton H seal option raises the limit to 150 C.
Airtac SI100 Standard Cylinder SI100X135 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X135 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X135 |
| Bore size | Ø100 mm |
| Stroke | 135 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 SAI100X135 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 SAI100X135 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 SI100X135
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×135 | 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 SI100X135 Is Used
Heavy-Duty Pressing
Ideal for applying high clamping or pressing forces up to 3927 N at 0.5 MPa in automated metalworking and riveting cells.
Pallet Diversion
Provides the robust stroke needed to push heavy loaded pallets off a main conveyor line onto a secondary packaging spur.
Lift Gate Actuation
Drives heavy material lift gates or scissor lifts, safely moving loads around the 200 kg vertical lift threshold.
Replacing the Airtac SI100 Standard Cylinder SI100X135 with the SAI100X135
To replace the SI100X135, order the SAI100X135 and confirm the ISO 15552 mounting interface, 135mm stroke, and G1/2 port match your fixture. This SKU has no magnet (-S), so it cannot support legacy CS1-B/DS1-B sensors; order a magnet-equipped SAI if sensing is required. Sizing both ways: a neighbouring 80mm bore yields 2513 N push at 0.5 MPa, while the 125mm bore offers 6136 N. Note that a plain cylinder drifts on air loss—the cushion only decelerates—so use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant for load holding. Since the stroke is under 300mm, side-load rod-bending risks are minimal, but standard guide considerations apply.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X135
- ✓ 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 SI100X135 FAQ
Yes, the AirTAC SI100X135 is discontinued. The direct replacement is the SAI100X135. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 135mm stroke, output force, G1/2 port, and mounting accessories.
This 100mm bore cylinder features a G1/2 air port and an 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 SAI100X135
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X135 replacement — usually within 7-8 hours.