Airtac SAIJ160 Adjustable Cylinder SAIJ160BX850-20
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160BX850-20 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 SAIJ160BX850-20
The AirTAC SAIJ160X850-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a usable travel window of 830 to 850 mm, allowing you to dial back the nominal 850 mm stroke by up to 20 mm during machine commissioning. Part of the adjustable-stroke SAIJ family, it uses an extruded aluminum barrel with sensor grooves on both sides rather than a traditional tie-rod assembly.
Equipped with a SUS304 stainless steel rod and PT tapered ports, this 160 mm bore delivers robust performance. It generates 14074 N of push force at 0.7 MPa and features a 50 mm adjustable air cushion at both ends to manage kinetic energy. The rear stopper screw acts purely as a travel delimiter and does not lock the load without continuous air pressure.
Airtac SAIJ160 Adjustable Cylinder SAIJ160BX850-20 Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160BX850-20 |
|---|---|
| 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 SAIJ160BX850-20
| 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 SAIJ160BX850-20 Is Used
Long-Stroke Press Tuning
Fine-tune the 830-850 mm travel end-position during setup to accommodate varying material thicknesses without physically remounting the actuator.
Conveyor Changeover
Adjust the rear stopper by up to 20 mm to modify product push-off distances during production line format changes.
Heavy Material Handling
Leverage the 14074 N push force at 0.7 MPa to move heavy pallets or structural components, relying on the 50 mm air cushions for smooth deceleration.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX850-20 the Right Cylinder?
Choose this 160 mm bore when an 80 mm bore falls short—yielding 14074 N push at 0.7 MPa versus the 80 mm bore's 3518 N. The adjustable 830-850 mm window is ideal for fine-tuning end positions on long-stroke machinery without adding external stops or swapping cylinders. Because the 850 mm stroke is substantial, always use an external guide to prevent excessive side loading on the rod.
For ISO 15552 interchangeability, verify the 160 mm bore, 850 mm nominal stroke, 20 mm adjustment range, PT port threads, and SUS304 rod material. Note that SAIJ supports a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets. If your application requires holding the load without live air, select a SAIL or BSAI cylinder instead, as the SAIJ rear adjuster is not a brake.
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 SAIJ160BX850-20 FAQ
At 0.7 MPa operating pressure, this 160 mm bore cylinder generates 14074 N of push force and 9425 N of pull force. At 0.9 MPa, the push force increases to 18095 N.
The rear adjuster screw allows you to shorten the effective travel from the nominal 850 mm down to 830 mm. This creates a 20 mm tuning window for precise end-positioning at commissioning without replacing the cylinder.
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