This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X850TC, 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 SI100X850TC
The AirTAC SI100 Standard Cylinder SI100X850TC is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 850mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X850TC, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke850 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X850TC
- 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 SI100X850TC
The AirTAC SI100X850TC is a discontinued double-acting ISO 15552 profile cylinder with a 100 mm bore and 850 mm stroke. It delivers 3927 N push and 3681 N pull at 0.5 MPa, peaking at 801 kgf. The direct replacement is the SAI100X850TC, matching the G1/2 port, M20x1.5 rod thread and TC trunnion mount. This specific SKU lacks a magnet (-S), so it cannot accept a CS1-B or DS1-B sensor.
The SAI upgrade introduces a two Y-shaped one-way piston seal for low start-up pressure and long life. For load holding, note that standard cushions only decelerate; use the SAIL or BSAI lock variants to prevent drift.
Airtac SI100 Standard Cylinder SI100X850TC Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X850TC |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X850TC |
| Bore size | Ø100 mm |
| Stroke | 850 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 SAI100X850TC 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 SAI100X850TC 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 SI100X850TC
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×850 | 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 SI100X850TC Is Used
Pallet Transfer
Drives heavy pallets along a 850 mm stroke conveyor segment, utilizing the 3927 N push force to overcome friction and index loads reliably.
Vertical Lift Gate
Raises a 200 kg material gate using the 100 mm bore at 0.5 MPa, requiring external guides to manage the 850 mm stroke without rod bending.
Press Ejection
Ejects formed parts from a press bed, relying on the 3681 N pull force and TC trunnion mount to accommodate the long-stroke lateral movement.
Replacing the Airtac SI100 Standard Cylinder SI100X850TC with the SAI100X850TC
To replace the SI100X850TC, order the SAI100X850TC. Verify the ISO 15552 TC trunnion interface, 850 mm stroke, G1/2 port, and confirm you do not need a magnet (this no-S SKU cannot take a sensor). For sizing, the 100 mm bore yields 3927 N push at 0.5 MPa; dropping to an 80 mm bore gives 2513 N, while raising pressure to 0.7 MPa provides 5497 N. Because this is an 850 mm stroke, use external guides to prevent rod bending and side loads. A plain cylinder drifts on air loss—cushions only decelerate—so specify a SAIL lock, BSAI clamp-lock, or external pilot check valve for held loads.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X850TC
- ✓ 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 SI100X850TC FAQ
Yes, the SI100X850TC is discontinued. The direct replacement is the SAI100X850TC. It is dimensionally interchangeable per ISO 15552, retaining the same 100 mm bore, 850 mm stroke, G1/2 port, TC mount, and 3927 N force. You simply order the SAI equivalent.
The bore is 100 mm with a G1/2 air port. The thrust is 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 SAI100X850TC
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X850TC replacement — usually within 7-8 hours.