This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X100LB, 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 SI100X100LB
The AirTAC Airtac SI100 Standard Cylinder SI100X100LB is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 100mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X100LB, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke100 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X100LB
- 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 SI100X100LB
The AirTAC SI100X100LB is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 100 mm stroke. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. The direct replacement is the SAI100X100LB, matching the bore, stroke, force, port, and LB foot mounting interface.
The SAI upgrade features two Y-shaped one-way piston seals for low start-up pressure and long life. This no-magnet SKU cannot accept a sensor, and the standard cushion only decelerates; use a SAIL lock or pilot check valve to hold loads.
Airtac SI100 Standard Cylinder SI100X100LB Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X100LB |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X100LB |
| Bore size | Ø100 mm |
| Stroke | 100 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 SAI100X100LB 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 SAI100X100LB 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 SI100X100LB
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×100 | 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 SI100X100LB Is Used
Heavy Press Clamping
Secures large metal workpieces in machining fixtures, utilizing the 3927 N push force at 0.5 MPa to prevent movement during milling or drilling operations.
Package Diverters
Actuates heavy-duty routing gates on conveyor lines, using the 100 mm bore and LB foot mount to reliably push bulky cartons onto secondary tracks.
Replacing the Airtac SI100 Standard Cylinder SI100X100LB with the SAI100X100LB
To replace the SI100X100LB, order the SAI100X100LB. Verify the ISO 15552 mounting interface, 100 mm stroke, G1/2 port (PT/G/NPT thread), and the LB foot mounting accessory. Because this SKU lacks the -S magnet, it cannot support CS1-B/DS1-B sensors. For sizing, the 100 mm bore yields 3927 N push at 0.5 MPa; if less force is needed, an 80 mm bore provides 2513 N, while a 125 mm bore offers 6136 N. Remember that a standard cylinder drifts without live air—select the SAIL or BSAI lock variant, or an external pilot check valve, to hold a load. The SAIF variant integrates a 4M valve for bores up to 100 mm.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X100LB
- ✓ 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 SI100X100LB FAQ
Yes, the SI100X100LB is discontinued. The direct replacement is the SAI100X100LB. It features the same ISO 15552 mounting interface, 100 mm bore, 100 mm stroke, output force, G1/2 port, and LB foot mount, fitting directly into existing fixtures.
This double-acting cylinder uses a G1/2 port. The thrust ratings are: 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 SAI100X100LB
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X100LB replacement — usually within 7-8 hours.