Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 650mm 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
- Stroke650 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-20S
The AirTAC SAIJ100X650-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a robust 7068N of push force at 0.9 MPa and features a 650 mm nominal stroke that can be fine-tuned backward by up to 20 mm, yielding a precise 630-650 mm usable travel window during commissioning. This adjustability allows you to dial in exact end positions without swapping the cylinder or adding external stops.
This specific SKU is built with a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for AirTAC CMSE reed and DMSE electronic sensors. It uses a G1/2 port and achieves speeds of 30-800 mm/s. Because the barrel is an extruded aluminum profile rather than a tie-rod design, it provides dual-side sensor grooves for flexible switch mounting.
The rear adjuster acts as a mechanical stop to set the travel end and deceleration, but it does not hold the load without live air pressure. For applications requiring true position holding without continuous air, consider the related SAIL or BSAI series.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 650 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 SAIJ100BX650-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×650 | 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 SAIJ100BX650-20S Is Used
Product Changeover Dials
Quickly adjust the 630-650 mm travel window during format size changes on packaging lines without replacing the actuator.
Commissioning End-Stops
Fine-tune the retract end position during machine setup to perfect timing and avoid mechanical crashes.
Long-Stroke Assembly Press
Leverage 7068N of push force at 0.9 MPa to seat large components over a 650 mm travel distance.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-20S the Right Cylinder?
Selecting this 100 mm bore over the smaller 80 mm variant steps your thrust up significantly, moving from 4523N to 7068N at 0.9 MPa. If your application requires less than 318 kgf, dropping to the 63 mm bore offers a lighter footprint. The SAIJ100X650-20-S is chosen specifically when a 650 mm stroke needs on-site fine-tuning; the 20 mm rear adjustment screw lets you trim the retract end for product changeovers without installing external physical stops.
When ordering an ISO 15552 replacement, verify the 100 mm bore, 650 mm stroke, 20 mm adjustment range, PT tapered port threads, and the -S magnet option. Because the 650 mm stroke is relatively long, ensure your mounting setup accommodates the 25 mm rod diameter and M20x1.5 rod thread; long unsupported strokes demand an external guide to prevent excessive side-load wear. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options.
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 SAIJ100BX650-20S FAQ
At 0.9 MPa it provides 7068N of push force and 3681N of pull force. It can reach a maximum of 801 kgf at 1.0 MPa.
A rear screw acts as a mechanical stop, allowing you to shorten the 650 mm nominal stroke by up to 20 mm, creating a 630-650 mm usable travel window. It sets the end position but does not lock the load without air pressure.
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