This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X33, 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 SI100X33
The AirTAC Airtac SI100 Standard Cylinder SI100X33 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 33mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X33, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke33 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X33
- 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 SI100X33
The AirTAC SI100X33 is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 33 mm stroke, delivering a push force of 3927 N at 0.5 MPa. It features a G1/2 port and a Ø25 mm piston rod. AirTAC replaced this legacy unit with the SAI100X33, a direct upgrade sharing the exact ISO 15552 mounting interface, bore, stroke, force, port and mounting fixtures.
The SAI replacement introduces an upgraded piston seal with two Y-shaped one-way elements for low start-up pressure and long life. Note this specific SKU lacks a magnet (-S) and therefore cannot accept legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100X33 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X33 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X33 |
| Bore size | Ø100 mm |
| Stroke | 33 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 SAI100X33 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 SAI100X33 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 SI100X33
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×33 | 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 SI100X33 Is Used
Heavy-Duty Pressing
Drives robust pressing and stamping actions in automated lines, utilising the 3927 N push force at 0.5 MPa to seat bearings and form components reliably.
Pallet Diverting
Actuates heavy pallet stops and diverters along high-throughput material handling conveyors where the 200 kg vertical lift capacity handles substantial loads.
Fixture Clamping
Secures large workholding fixtures in packaging and assembly machinery, benefiting from the rigid ISO 15552 profile barrel and 36 mm adjustable end cushions.
Replacing the Airtac SI100 Standard Cylinder SI100X33 with the SAI100X33
To replace the discontinued SI100X33, order the SAI100X33 ensuring your ISO 15552 mounting interface, G1/2 port, and M20x1.5 rod thread match. This non-magnetic SKU cannot support position sensing; if switches are needed, select an SAI100X33S model and use current AirTAC switches. Sizing both ways: the 100 mm bore yields 3927 N push at 0.5 MPa, while the neighbouring 80 mm bore offers 2513 N. A plain cylinder drifts on air loss because the cushion only decelerates; for load holding, specify the SAIL lock, BSAI clamp-lock, or an external pilot check valve. The SAI family also adds the SAIF integrated 4M valve (bores 32-100) which the SI lacked.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X33
- ✓ 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 SI100X33 FAQ
Yes, the AirTAC SI100X33 is discontinued. The direct replacement is the SAI100X33. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 33 mm stroke, G1/2 port, output force, and mounting interface.
This double-acting cylinder uses a G1/2 air port. It delivers a push force of 3927 N and a pull force of 3681 N 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 SAI100X33
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X33 replacement — usually within 7-8 hours.