Airtac SAIJ160 Adjustable Cylinder SAIJ160BX850-20S
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160BX850-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 850mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ160 mm
- Stroke850 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX850-20S
The AirTAC SAIJ160X850-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 14074N of pull force at 0.7 MPa. Its 850mm nominal stroke paired with a 20mm adjustment screw creates an 830-850mm usable travel window, allowing precise end-position tuning during commissioning. The 40mm SUS304 stainless steel rod and M36x2 thread provide high rigidity, while the PT tapered port ensures a reliable, leak-free connection.
This unit includes a magnet for CMSE reed and DMSE electronic sensors, fitting directly into the extruded aluminum barrel's dual sensor grooves. The rear stopper acts solely as a travel delimiter to decelerate the load alongside the 50mm air cushions; it does not hold the load without live air pressure. For load-holding requirements, consider the SAIL or BSAI series instead.
Airtac SAIJ160 Adjustable Cylinder SAIJ160BX850-20S Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160BX850-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 850 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 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 (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ160 Adjustable Cylinder SAIJ160BX850-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×850 | 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 SAIJ160 Adjustable Cylinder SAIJ160BX850-20S Is Used
Heavy Material Handling
Manages the movement of heavy pallets or metal components, using the 830-850mm travel window to adapt to varying load sizes without mechanical rebuilds.
Press Fit Tuning
Provides 14074N of pull force at 0.7 MPa for assembly operations, allowing operators to fine-tune the retraction end-stop for precise insertion depths.
Automated Line Changeover
Facilitates rapid format changes on packaging or processing machinery by adjusting the rear stopper screw up to 20mm during product transitions.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX850-20S the Right Cylinder?
Selecting this 160mm bore over the smaller 125mm option (which yields 8590N pull at 0.5 MPa) is necessary when your application requires heavy material handling. The adjustable stroke is ideal for product changeovers on a line, letting you dial back the travel by up to 20mm without swapping the cylinder or adding external stops. When replacing an ISO 15552 cylinder, match the 160mm bore, 850mm stroke, 20mm adjustment, PT G3/4 port, and the -S magnet requirement.
Because the 850mm stroke is substantial, the 40mm rod will still experience side-loading forces if the load is left unsupported. An external guide rail is strongly recommended to prevent premature seal wear. Note that SAIJ supports a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR configurations.
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 SAIJ160 Adjustable Cylinder SAIJ160BX850-20S FAQ
At an operating pressure of 0.7 MPa, this 160mm bore cylinder generates a pull force of 14074N and a push force of 21991N. The maximum push force is 28274N at 1.0 MPa.
The rear adjuster screw allows you to shorten the 850mm nominal stroke by up to 20mm, creating an adjustable 830-850mm travel window. This stopper only limits the end position and does not lock the load without continuous air pressure.
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