This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI100BX210, 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 SI100BX210
The AirTAC Airtac SI100 Standard Cylinder SI100BX210 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø100mm bore and 210mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI100BX210, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ100 mm
- Stroke210 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- StatusDiscontinued → SAI100BX210
- 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 SI100BX210
The AirTAC SI100BX210 is a discontinued double-acting ISO 15552 profile cylinder with a 100mm bore and 210mm stroke. It delivers 3927N push and 3681N pull at 0.5MPa via a G1/2 port. The direct replacement is the SAI100BX210, which maintains the exact ISO 15552 mounting interface, bore, stroke, output force, and port size for seamless fixture integration.
This SKU features a SUS304 stainless steel rod for corrosion resistance but lacks a magnet, so it cannot accept position switches. The SAI upgrade utilizes two Y-shaped one-way piston seals for lower start-up pressure and longer life. For load holding, note that the air cushion only decelerates; use an external rod lock or pilot check valve to prevent drift.
Airtac SI100 Standard Cylinder SI100BX210 Technical Specifications
| Model | Airtac SI100 Standard Cylinder SI100BX210 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI100BX210 |
| Bore size | Ø100 mm |
| Stroke | 210 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 SAI100BX210 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 SAI100BX210 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 SI100BX210
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 100 | Bore size in mm. |
| ×210 | 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 SI100BX210 Is Used
Heavy-Duty Pressing
Applies the 3927N push force at 0.5MPa for seating bearings or assembling heavy mechanical components with stable, high-thrust actuation.
Pallet Diversion
Drives robust routing gates or heavy-duty pallet stops on production lines, utilizing the 100mm bore's substantial output to redirect loaded transfers.
Replacing the Airtac SI100 Standard Cylinder SI100BX210 with the SAI100BX210
To replace the discontinued SI100BX210, order the SAI100BX210. Confirm the ISO 15552 mounting interface, 100mm bore, 210mm stroke, G1/2 port, and your specific mounting accessory (LB, FA, TC, etc.). Because this SKU lacks the -S magnet, it cannot support legacy CS1-B/DS1-B sensors; if position detection is needed, select an SAI100BX210S. When sizing, neighboring bores offer different forces: an 80mm bore provides 2513N push at 0.5MPa, while a 125mm bore yields 6136N. At 210mm stroke, side-load and rod-bending risks are moderate, so ensure proper guide alignment to prevent premature seal wear. Remember that a standard cylinder does not hold load without live air; for static holding, explore the SAIL or BSAI lock variants, or add a pilot check valve.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI100BX210
- ✓ 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 SI100BX210 FAQ
Yes, the AirTAC SI100BX210 is discontinued. The direct replacement is the SAI100BX210. It is a true ISO 15552 profile cylinder that matches the original 100mm bore, 210mm stroke, 3927N force, G1/2 port, and mounting dimensions, fitting directly into your existing fixtures.
The 100mm bore features a G1/2 air port and a 25mm piston rod. It generates 3927N push and 3681N pull at 0.5MPa, 5497N push at 0.7MPa, 7068N push at 0.9MPa, and a maximum theoretical force of 801kgf at 1.0MPa. Operating speed is 30-800mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAI100BX210
Send us the quantity and destination. We confirm price, stock and lead time on the SAI100BX210 replacement — usually within 7-8 hours.