Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-40
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-40 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 SAIJ100BX650-40
The AirTAC SAIJ100X650-40 is a double-acting ISO 15552 profile cylinder equipped with a rear mechanical stopper, allowing you to trim the effective travel down to 610 mm from its 650 mm nominal length. Built with a SUS304 stainless steel rod and PT tapered port threads, it delivers a robust 7068 N of push force at 0.9 MPa. This makes it highly suitable for demanding industrial positioning tasks.
Unlike a fixed-stroke SAI cylinder, this model allows precise end-position tuning during commissioning or product changeovers without swapping out the barrel. The extruded aluminum profile features sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic switches, though this specific SKU is supplied without a magnet. Remember, the rear adjuster acts only as a travel stop to work alongside the air cushions; it does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-40 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-40 |
|---|---|
| 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 SAIJ100BX650-40
| 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 SAIJ100BX650-40 Is Used
Variable End-Stop Tuning
Dial in the retract position precisely within the 610-650 mm window during machine commissioning without physically replacing the actuator.
Product Size Changeover
Quickly adapt automated lines to new product lengths by adjusting the rear stopper screw rather than re-engineering the entire pneumatic assembly.
Heavy-Duty Positioning
Leverage the 7068 N push force at 0.9 MPa to move heavy pallets or fixtures into a precise retracted datum point before the next process step.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX650-40 the Right Cylinder?
When deciding on bore size, stepping down to an 80 mm cylinder yields a 4523 N push force at 0.9 MPa, while moving up to a 125 mm bore increases that output to 11045 N. Choose this 100 mm adjustable-stroke version when your machine setup requires variable end stops or fine-tuning of the retract position without adding external stops.
Because the stroke is 650 mm, the 25 mm rod diameter and M20x1.5 rod thread should be paired with an external guide to prevent excessive side-loading on the extended rod. For load-holding without continuous air pressure, this standard SAIJ is insufficient—you would need an external rod lock, or a SAIL (air-released lock) or BSAI (clamp-lock) cylinder instead. To match this exact configuration, specify a 100 mm bore, 650 mm stroke, 40 mm adjustment, PT port threads, SUS304 (B) rod material, no magnet, and the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, 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 SAIJ100BX650-40 FAQ
At an operating pressure of 0.9 MPa, this 100 mm bore cylinder provides 7068 N of push force and 6625 N of pull force. At 0.5 MPa, it delivers 3927 N push and 3681 N pull.
The rear stopper screw lets you shorten the 650 mm nominal stroke by up to 40 mm, creating a usable travel window of 610 to 650 mm. This adjuster sets the end position and deceleration point but does not lock or hold the load without live air pressure.
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