Airtac SAIJ160 Adjustable Cylinder SAIJ160AX650-20S
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160AX650-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 650mm 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
- Stroke650 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160AX650-20S
The AirTAC SAIJ160X650-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window from 630 to 650 mm. Delivering a robust 14074 N of push force at 0.7 MPa, it is engineered for heavy-duty positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides, and this -S configuration includes a magnet for direct mounting of CMSE reed or DMSE electronic solid-state switches.
This unit utilizes a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and features PT tapered port threads. It is important to note that the rear adjuster functions strictly as a travel stop for end-position tuning, not as a load-holding lock; for maintaining position without live air pressure, consider the SAIL or BSAI series.
Airtac SAIJ160 Adjustable Cylinder SAIJ160AX650-20S Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160AX650-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 650 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 SAIJ160AX650-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | 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 SAIJ160 Adjustable Cylinder SAIJ160AX650-20S Is Used
Heavy Press Tuning
Dial in the exact 630-650 mm end-of-stroke contact point for a large assembly press without machining custom external spacers.
Product Changeover
Adjust the retract stop on the fly when switching a production line to accommodate a different pallet or fixture length.
Large Fixture Alignment
Fine-tune the extended position of a heavy 14074 N load during machine commissioning to achieve perfect parallel alignment.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160AX650-20S the Right Cylinder?
Choose this 160 mm bore when an application demands high thrust that exceeds the 80 mm bore class (which provides 3518 N at 0.7 MPa) but does not require the maximum 3204 kgf capacity of the 200 mm series. The adjustable 630-650 mm travel window is ideal for commissioning setups where a fixed-stroke SAI cylinder would require external stops to dial in the exact end position. Because the 650 mm stroke is substantial, an external guide rail is recommended to prevent excessive side-loading on the rod.
For an exact ISO 15552 replacement, match the 160 mm bore, 650 mm stroke, 20 mm adjustment, PT port thread, and -S magnet attributes. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, intentionally omitting FB, CA, CB, and CR brackets. If the machine requires true load-holding without continuous air supply, this cylinder will not suffice and a SAIL pneumatic lock or BSAI clamp-lock variant should be specified instead.
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 SAIJ160AX650-20S FAQ
At a 0.7 MPa operating pressure, this 160 mm bore cylinder generates 14074 N of push force and 9425 N of pull force. It can reach a maximum of 2050 kgf at 1.0 MPa.
The rear adjuster screw lets you shorten the effective travel by up to 20 mm, creating a usable stroke window of 630 to 650 mm. It acts as a mechanical stop for end-position tuning and does not lock the load without live air pressure.
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