Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-20
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 500mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-20
The AirTAC SAIJ100X500-20 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 500 mm stroke that can be fine-tuned down by up to 20 mm, giving you a precise 480-500 mm usable travel window during commissioning. Delivering 3927 N of push force at 0.5 MPa, it handles heavy loads with a 25 mm rod and G1/2 PT ports.
This variant features a SUS304 stainless steel rod for superior corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU omits the magnet, meaning CMSE or DMSE switches require the -S option to function. The rear stopper screw sets the retract end position, but it is a travel stop, not a lock, and cannot hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 500 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 stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / 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 | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×500 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-20 Is Used
Variable End-Stop Machining
Fine-tune the 480-500 mm retract position on the fly to accommodate different part lengths without retooling the entire fixture.
Product Changeover Diverter
Adjust the stroke by up to 20 mm during line changeovers to handle varying package sizes on a heavy-duty sorting conveyor.
Heavy Load Positioning
Leverage the 3927 N push force to move heavy pallets, using the rear adjuster to precisely set the stopping point at commissioning.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-20 the Right Cylinder?
Choose this 100 mm bore when you need substantial thrust—stepping up from a 80 mm bore increases your 0.5 MPa push force from 2513 N to 3927 N, while dropping to a 125 mm bore yields 6136 N. The adjustable stroke is ideal for product changeovers, allowing you to dial in the exact 480-500 mm end position without swapping cylinders or adding external stops. If your process requires holding the load without continuous air pressure, you should look at the SAIL or BSAI locking cylinders instead.
Because this cylinder features a 500 mm stroke, the 25 mm rod and M20x1.5 thread provide robust support, but an external guide is strongly recommended to prevent excessive side-loading on the piston. For a direct ISO 15552 replacement, match the 100 mm bore, 500 mm stroke, 20 mm adjustment, PT ports, SUS304 rod, and your required mounting set (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX500-20 FAQ
At 0.5 MPa, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At the maximum operating pressure of 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 20 mm, creating a 480-500 mm travel window. This stopper only sets the end position and does not lock the load without live air pressure.
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