This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100AX30S, 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 SI100AX30S
The AirTAC Airtac SI100 Standard Cylinder SI100AX30S is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 30mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100AX30S, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke30 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100AX30S
- 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 SI100AX30S
The AirTAC SI100AX30S is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 30mm stroke. Delivering 3927 N push force at 0.5 MPa through a G1/2 port, it features a SUS420J2 stainless steel rod and a piston magnet for CS1-B/DS1-B sensors. AirTAC replaced this legacy unit with the SAI100AX30S, a direct sharing the exact ISO 15552 mounting interface, bore, stroke, and force.
The SAI100AX30S upgrades the piston seal to two Y-shaped one-way elements for lower start-up pressure and longer life. The SAI family also introduces lock and valve variants (SAIL, SAIF, BSAI) absent in the SI line.
Airtac SI100 Standard Cylinder SI100AX30S Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100AX30S |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100AX30S |
| Bore size | Ø100 mm |
| Stroke | 30 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 SAI100AX30S 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 SAI100AX30S 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 SI100AX30S
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×30 | 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 SI100AX30S Is Used
Short-Stroke Clamping
Ideal for high-force 30mm clamping tasks in machining fixtures, utilizing the 100mm bore's 3927 N push at 0.5 MPa to secure heavy steel workpieces.
Press Fit Operations
Provides reliable downward thrust for seating bearings or pins, where the SUS420J2 stainless rod offers corrosion resistance in humid production environments.
Heavy Transfer Stops
Acts as a robust stopper block on high-mass conveyor lines, safely halting pallets using the 801 kgf maximum theoretical force at 1.0 MPa.
Replacing the Airtac SI100 Standard Cylinder SI100AX30S with the SAI100AX30S
To replace the SI100AX30S, order the SAI100AX30S. It drops directly into existing fixtures via the identical ISO 15552 mounting interface, matching the 100mm bore, 30mm stroke, G1/2 port, and M20x1.5 rod thread. Retain your mounting accessories and confirm the -S magnet requirement for current AirTAC switches. If sizing up or down, neighbouring bores (80mm or 125mm) alter the 0.5 MPa push force (2513 N or 6136 N). Note that a plain cylinder drifts on air loss; the cushion only decelerates. For load holding, specify the SAIL lock or BSAI clamp-lock variant, or use an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100AX30S
- ✓ 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 SI100AX30S FAQ
Yes, the AirTAC SI100AX30S is discontinued. The direct replacement is the SAI100AX30S. It shares the identical ISO 15552 mounting interface, 100mm bore, 30mm stroke, output force, and G1/2 port, fitting existing fixtures perfectly while upgrading the seal design.
This double-acting cylinder uses a G1/2 air port. It generates 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, and 7068 N push at 0.9 MPa. The theoretical maximum force is 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100AX30S
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100AX30S replacement — usually within 7-8 hours.