This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX135S, 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 SI100AX135S
The AirTAC SI100 Standard Cylinder SI100AX135S 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 SAI100AX135S, 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 → SAI100AX135S
- 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 SI100AX135S
The AirTAC SI100AX135S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 135mm stroke. It delivers 3927 N push force at 0.5 MPa. The direct replacement is the SAI100AX135S, retaining the same G1/2 port, M20x1.5 rod thread, and mounting interface.
The SAI upgrade features a new piston seal with two Y-shaped one-way elements for low start-up pressure. This model includes the -A SUS420J2 stainless rod and -S magnet for CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100AX135S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX135S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX135S |
| 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 SAI100AX135S 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 SAI100AX135S 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 SI100AX135S
| 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 SI100AX135S Is Used
Heavy-Duty Pressing
Applies up to 7068 N at 0.9 MPa for seating bearings and assembling large components in automated machinery.
Pallet Diversion
Actuates heavy lane guides and stoppers on packaging lines, using the 135mm stroke to redirect product flow.
Lift Gate Actuation
Provides reliable vertical lifting power for material handling gates, safely managing loads around 200 kg.
Replacing the Airtac SI100 Standard Cylinder SI100AX135S with the SAI100AX135S
To replace the SI100AX135S, order the SAI100AX135S. Verify the ISO 15552 mounting interface, 135mm stroke, G1/2 port, and -S magnet for position sensing. If you need more force than the 5497 N at 0.7 MPa, step up to a 125mm bore; if less is required, an 80mm bore provides 2513 N. For load holding on air loss, note that standard cushions only decelerate; use an external pilot check valve or the SAIL/BSAI lock variants. The 135mm stroke is short, so side-load risks are minimal.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX135S
- ✓ 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 SI100AX135S FAQ
Yes, the SI100AX135S is discontinued. The direct replacement is the SAI100AX135S. It is dimensionally interchangeable per the ISO 15552 mounting interface, maintaining the same 100mm bore, 135mm stroke, force, G1/2 port, and mounting accessories.
This double-acting cylinder features a G1/2 air port. Force output is 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 maximum of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX135S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX135S replacement — usually within 7-8 hours.