This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX50SH, 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 SI100BX50SH
The AirTAC Airtac SI100 Standard Cylinder SI100BX50SH is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 50mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX50SH, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke50 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX50SH
- 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 SI100BX50SH
The AirTAC SI100BX50SH is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 50mm stroke. It delivers 3927 N push force at 0.5 MPa through a G1/2 port. AirTAC replaced this legacy unit with the SAI100BX50SH, a direct replacement sharing the exact ISO 15552 mounting interface, bore, stroke, force, port and mounting accessories.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. This specific SKU includes a SUS304 stainless piston rod, a Viton H high-temperature seal rated for 0 to 150 C, and a magnet for legacy CS1-B/DS1-B sensors.
Airtac SI100 Standard Cylinder SI100BX50SH Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX50SH |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX50SH |
| Bore size | Ø100 mm |
| Stroke | 50 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 SAI100BX50SH 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 SAI100BX50SH 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 SI100BX50SH
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×50 | 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 SI100BX50SH Is Used
High-Force Clamping
Secures heavy steel weldments during machining, utilizing the 3927 N push force at 0.5 MPa with the durable SUS304 rod.
Hot-Environment Actuation
Operates automated foundry gates safely up to 150 C thanks to the Viton H seal, resisting thermal degradation.
Replacing the Airtac SI100 Standard Cylinder SI100BX50SH with the SAI100BX50SH
To replace the SI100BX50SH, order the SAI100BX50SH and confirm the ISO 15552 mounting interface, 100mm bore, 50mm stroke, G1/2 port (PT/G/NPT), and mounting accessory. Retain the -S magnet for current AirTAC switches, the -B SUS304 rod, and the -H Viton seal. Sizing both ways: the neighboring 80mm bore yields 2513 N push at 0.5 MPa, while the 125mm bore yields 6136 N. A plain cylinder drifts on air loss since the cushion only decelerates; for load holding, use an external rod lock, pilot check valve, or the SAIL/BSAI lock variants. The SAIF variant integrates a 4M valve for bores up to 100mm.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX50SH
- ✓ 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 SI100BX50SH FAQ
Yes, the AirTAC SI100BX50SH is discontinued. The direct replacement is the SAI100BX50SH. It is dimensionally interchangeable per ISO 15552, matching the 100mm bore, 50mm stroke, 3927 N force, G1/2 port, and mounting fixtures.
The G1/2 port bore delivers 3927 N push and 3681 N pull at 0.5 MPa, 5497 N push at 0.7 MPa, 7068 N at 0.9 MPa, and a maximum theoretical force of 801 kgf at 1.0 MPa. It operates at 30-800 mm/s with a 36mm adjustable air cushion.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX50SH
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX50SH replacement — usually within 7-8 hours.