Airtac SAIJ100 Adjustable Cylinder SAIJ100BX950-20
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100BX950-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 950mm 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
- Stroke950 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 SAIJ100BX950-20
Its 950mm nominal stroke can be dialed back by up to 20mm, creating a precise 930-950mm usable travel window for fine-tuning end positions during machine setup. This model features a SUS304 stainless steel rod for superior corrosion resistance and operates at speeds of 30-800mm/s.
Because this 950mm stroke approaches the 1000mm maximum standard limit for this bore, the M20x1.5 rod thread and 25mm rod diameter provide robust support, though an external guide is still recommended for long unsupported loads. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets. Fluid supply must be air filtered to 40um, operating between 0.15 and 1.0 MPa.
Airtac SAIJ100 Adjustable Cylinder SAIJ100BX950-20 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100BX950-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 950 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 SAIJ100BX950-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×950 | 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 SAIJ100BX950-20 Is Used
Product Size Changeover
Dial in the 930-950mm travel window during production line changeovers to accommodate different product lengths without changing the cylinder.
End-Position Tuning
Fine-tune the retract stroke end at machine commissioning using the rear stopper, avoiding the mechanical rework required by fixed-stroke actuators.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100BX950-20 the Right Cylinder?
Select this 100mm bore cylinder when an application requires substantial thrust (up to 801kgf at 1.0 MPa) alongside variable end-stop positioning. The adjustable-stroke design is ideal for product-size changeovers on a line, eliminating the need to physically swap cylinders or bolt on external stops. It mounts dimensionally interchangeably per ISO 15552.
When configuring your replacement, verify the 100mm bore, 950mm stroke, 20mm adjustment range, PT tapered port threads, and SUS304 (B) rod material. Note that this cylinder lacks a magnet, so position sensing is not available without modification. For any stroke of 300mm or more, ensure you use an external guide to prevent excessive side-loading on the rod. 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 AirTAC SAIL or BSAI series.
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 SAIJ100BX950-20 FAQ
The rear adjusting screw acts as a mechanical stop that allows you to shorten the effective stroke by up to 20mm. This provides a usable travel window of 930-950mm, enabling precise end-position tuning without swapping the cylinder. The adjuster is a stop, not a lock, and requires live air to maintain position.
At 0.5 MPa operating pressure, the push force is 3927N and the pull force is 3681N. If you increase the pressure to 0.7 MPa, the push force rises to 5497N. The maximum push force is 801kgf at 1.0 MPa.
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