This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X500, 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 SI100X500
The AirTAC Airtac SI100 Standard Cylinder SI100X500 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 500mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X500, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X500
- 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 SI100X500
The AirTAC SI100X500 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 500mm stroke. Delivering 3927 N push force at 0.5 MPa, it features a G1/2 air port and M20x1.5 rod thread. AirTAC replaced this legacy unit with the SAI100X500, a direct upgrade retaining the exact ISO 15552 mounting interface, bore, stroke, output force, port size and accessories.
The SAI100X500 features an upgraded piston seal utilizing two Y-shaped one-way elements for long life and low start-up pressure. This SKU lacks a magnet (-S) and cannot accept a sensor. For load holding, note that the air cushion only decelerates; consider the SAIL lock or BSAI clamp-lock variants.
Airtac SI100 Standard Cylinder SI100X500 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X500 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X500 |
| Bore size | Ø100 mm |
| Stroke | 500 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 SAI100X500 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 SAI100X500 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 SI100X500
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×500 | 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 SI100X500 Is Used
Heavy Material Transfer
Drives large pallets or heavy workpieces along assembly lines, utilizing the 3927 N push force to overcome friction over the 500mm travel distance.
Pallet Positioning
Indexes loaded pallets into wrapping or strapping stations, where the robust 100mm bore handles high inertial loads safely.
Press Fit Assembly
Applies steady axial pressure to seat large bearings or mechanical components, relying on the 5497 N push force available at 0.7 MPa.
Replacing the Airtac SI100 Standard Cylinder SI100X500 with the SAI100X500
To replace the SI100X500, order the SAI100X500 direct. Verify your ISO 15552 mounting accessory (LB, FA, TC, etc.), G1/2 port (PT/G/NPT) and 500mm stroke. Because this non-magnet SKU cannot take a sensor, if position feedback is needed you must select an SAI model with the S suffix. Sizing both ways: the 100mm bore yields 3927 N push at 0.5 MPa (80mm gives 2513 N). For this 500mm stroke, use external guides to prevent rod bending and side-load damage. The standard cylinder does not hold load without air; for drop prevention use the SAIL lock, BSAI clamp-lock, or an external pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X500
- ✓ 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 SI100X500 FAQ
Yes, the SI100X500 is discontinued. The direct replacement is the SAI100X500. It shares the identical ISO 15552 mounting interface, 100mm bore, 500mm stroke, output force, and G1/2 port, fitting existing fixtures perfectly while upgrading the piston seal.
It operates at 0.15-1.0 MPa with a G1/2 port and M20x1.5 rod thread. 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 max of 801 kgf at 1.0 MPa. Speed is 30-800 mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X500
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X500 replacement — usually within 7-8 hours.