Airtac SAIJ160 Adjustable Cylinder SAIJ160BX550-20
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160BX550-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 550mm 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
- Stroke550 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX550-20
The AirTAC SAIJ160X550-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window down to a 530-550 mm range. Delivering massive thrust, it provides 18095 N of push force at 0.9 MPa and 14074 N at 0.7 MPa. This robust unit utilizes a SUS304 stainless steel rod for superior corrosion resistance and features a PT tapered G3/4 port.
The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. Because this is an adjustable-stroke variant, the rear screw acts purely as a mechanical stop to dial in the end position during commissioning; it does not lock or hold the load without live air pressure. For load-holding applications, consider the SAIL or BSAI series instead.
Airtac SAIJ160 Adjustable Cylinder SAIJ160BX550-20 Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160BX550-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 550 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 SAIJ160BX550-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×550 | 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 SAIJ160BX550-20 Is Used
Heavy Press Tuning
Dial in the exact 530-550 mm travel end-stop during heavy press commissioning without swapping cylinders.
Product Changeover
Quickly adjust the retract position for different sized pallets on a conveyor line using the rear screw stopper.
Large Assembly Jigs
Fine-tune the stroke on large assembly jigs to accommodate variable part dimensions on the fly.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX550-20 the Right Cylinder?
Choose this 160 mm bore model when your application requires heavy thrust that exceeds the 7068 N push force of the 100 mm bore at 0.9 MPa. The 20 mm adjustment range is ideal for machinery that requires precise end-position tuning during product changeovers, eliminating the need to swap out the entire cylinder or bolt on external stops. With a 550 mm stroke, the 40 mm diameter rod and M36x2 thread provide substantial rigidity, but an external guide is still recommended to manage side loads over this long travel distance.
When replacing an ISO 15552 cylinder, match the 160 mm bore, 550 mm stroke, 20 mm adjustment, PT G3/4 port, and SUS304 rod material. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR styles found in other variants. Operating speed for this bore size is 30-500 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 SAIJ160 Adjustable Cylinder SAIJ160BX550-20 FAQ
At 0.9 MPa operating pressure, this 160 mm bore cylinder delivers 18095 N of push force and 14074 N at 0.7 MPa. The maximum thrust is 2050 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 550 mm nominal stroke by up to 20 mm, creating a 530-550 mm usable travel window. It only sets the end position and does not hold the load without air pressure.
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