This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100X250SH, 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 SI100X250SH
The AirTAC SI100 Standard Cylinder SI100X250SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 250mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100X250SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100X250SH
- 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 SI100X250SH
The AirTAC SI100X250SH is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 250mm stroke. Delivering 3927 N push force at 0.5 MPa via a G1/2 port, it is directly replaced by the SAI100X250SH. This direct upgrade shares the exact ISO 15552 mounting interface, bore, stroke, force, port and accessories, fitting existing fixtures perfectly.
The SAI upgrade features a modernized piston seal with two Y-shaped one-way elements for low start-up pressure and long life. This SI100X250SH unit includes a magnetic piston for legacy CS1-B/DS1-B switches and a Viton H seal for 0-150 C high-temp environments. The SAI family also adds SAIL, SAIF, and BSAI lock variants the SI lacked.
Airtac SI100 Standard Cylinder SI100X250SH Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100X250SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100X250SH |
| Bore size | Ø100 mm |
| Stroke | 250 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 SAI100X250SH 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 SAI100X250SH 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 SI100X250SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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 SI100X250SH Is Used
Heavy-Duty Pressing
Applies the 3927 N push force at 0.5 MPa for seating bearings and assembling large components in automated machinery.
Pallet Diversion
Handles robust 200 kg vertical lifting or horizontal shifting of heavy pallets using the 100mm bore and 250mm stroke.
High-Tact Forming
Operates reliably in hot zones up to 150 C using the Viton H seal for clamping or forming moulded materials.
Replacing the Airtac SI100 Standard Cylinder SI100X250SH with the SAI100X250SH
To replace this SI100X250SH, order the SAI100X250SH and confirm the ISO 15552 mounting interface, 100mm bore, 250mm stroke, G1/2 port, and your specific mounting accessory. The -S magnet enables current AirTAC switches, and the -H Viton seal handles 0-150 C heat. Sizing both ways: a neighbouring 80mm bore yields 2513 N [email protected], while a 125mm bore yields 6136 N. This 100mm bore provides 3927 N push and 3681 N pull at 0.5 MPa, reaching 801 kgf max at 1.0 MPa. A plain cylinder drifts on air loss since cushions only decelerate; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variant. With a 250mm stroke, ensure guide alignment to prevent rod bending and side-load wear.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100X250SH
- ✓ 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 SI100X250SH FAQ
Yes, the SI100X250SH is discontinued. The direct replacement is the SAI100X250SH. It shares the same ISO 15552 mounting interface, 100mm bore, 250mm stroke, output force, G1/2 port, and mounting accessories, fitting directly into existing fixtures.
This double-acting cylinder features a G1/2 port and an M20x1.5 rod thread. It delivers 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 force of 801 kgf at 1.0 MPa.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100X250SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100X250SH replacement — usually within 7-8 hours.