Airtac SAIJ100 Adjustable Cylinder SAIJ100BX70-20
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX70-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 70mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke70 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- 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 SAIJ100 Adjustable Cylinder SAIJ100BX70-20
The AirTAC SAIJ100X70-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. This built-in adjustability eliminates the need to swap cylinders or bolt on external stops when fine-tuning end positions.
This specific configuration features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for mounting CMSE reed or DMSE electronic switches. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB and rear pivot options.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX70-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX70-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 70 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100BX70-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×70 | 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 SAIJ100BX70-20 Is Used
Machine Changeover
Dial in the 50-70mm travel window on the fly to accommodate different product sizes without physically replacing the cylinder or adding external shims.
End-Position Tuning
Fine-tune the retract end-stop during commissioning to perfect the seating of heavy 100mm bore tooling, absorbing setup tolerances directly at the rear screw.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX70-20 the Right Cylinder?
Choose the SAIJ adjustable-stroke variant over a fixed SAI model when you need variable end-stops for product changeovers. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider an external rod lock, SAIL, or BSAI cylinder.
For ISO 15552 replacement matching, ensure the target unit shares the 100mm bore, 70mm stroke, 20mm adjustment range, PT G1/2 port, and the specified mounting style. Because the 25mm rod and M20x1.5 rod thread handle significant side loads, always verify your guiding structure, especially since this model operates at speeds of 30-800 mm/s.
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 SAIJ100BX70-20 FAQ
The rear adjuster acts as a mechanical stop that lets you shorten the 70mm nominal stroke by up to 20mm, creating a usable travel window of 50 to 70mm. It only sets the travel end and does not lock or hold the load without continuous air pressure.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
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