This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X70TC, 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 SI100X70TC
The AirTAC SI100 Standard Cylinder SI100X70TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 70mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X70TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke70 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X70TC
- 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 SI100X70TC
The AirTAC SI100X70TC is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 70mm stroke. It delivers 3927N push force at 0.5MPa via a G1/2 port. The direct replacement is the SAI100X70TC, which shares the exact ISO 15552 mounting interface, M20x1.5 rod thread and TC trunnion mount.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. Because this specific SI SKU lacks the -S magnet, it cannot accept a CS1-B/DS1-B sensor. For load holding, note that a plain cylinder drifts on air loss; use an external rod lock or the SAIL/BSAI lock variants.
Airtac SI100 Standard Cylinder SI100X70TC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X70TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X70TC |
| Bore size | Ø100 mm |
| Stroke | 70 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 SAI100X70TC 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 SAI100X70TC 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 SI100X70TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×70 | 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 SI100X70TC Is Used
Heavy Press Clamping
Applies the 3927N push force at 0.5MPa to secure heavy steel assemblies during machining or welding operations.
Pallet Diversion
Uses the 70mm stroke to push loaded pallets onto secondary conveyor lanes without requiring long actuation distances.
Material Lift Gates
Raises and lowers access gates on automated storage systems, relying on the TC trunnion to handle pivot stresses.
Replacing the Airtac SI100 Standard Cylinder SI100X70TC with the SAI100X70TC
To replace the SI100X70TC, order the SAI100X70TC to retain the identical ISO 15552 TC trunnion interface, 70mm stroke, G1/2 port and 3927N output. If downsizing, a 80mm bore yields 2513N at 0.5MPa; if upsizing, a 125mm bore provides 6136N. Since this SKU lacks a magnet, you cannot mount position sensors. A standard cylinder does not hold load without live air, so for vertical applications add a pilot check valve or explore the SAIL lock variant. The 36mm adjustable cushions handle end-of-stroke deceleration.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X70TC
- ✓ 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 SI100X70TC FAQ
Yes, the SI100X70TC is discontinued. The direct replacement is the SAI100X70TC. It is dimensionally interchangeable per ISO 15552, retaining the same 100mm bore, 70mm stroke, G1/2 port and TC mounting interface.
This double-acting cylinder uses a G1/2 port. It delivers 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a theoretical maximum of 801kgf at 1.0MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X70TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X70TC replacement — usually within 7-8 hours.