Airtac SAIJ160 Adjustable Cylinder SAIJ160BX70-20
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160BX70-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 70mm 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
- Stroke70 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX70-20
The AirTAC SAIJ160X70-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 10053N of push force at 0.5MPa. It features a SUS304 stainless steel rod and PT tapered ports. By turning the external stopper screw, you can trim the effective travel back by up to 20mm, creating a precise 50-70mm usable stroke window without swapping out the entire actuator.
This profile cylinder utilizes an extruded aluminum barrel with sensor grooves on both sides, though this specific SKU omits the magnet for position sensing. It achieves a standard operating speed of 30-500mm/s and relies on adjustable air cushions at both ends to decelerate heavy loads. Remember that the rear stopper is a travel end stop, not a locking mechanism; it cannot hold a load without continuous live air pressure.
Airtac SAIJ160 Adjustable Cylinder SAIJ160BX70-20 Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160BX70-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 70 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 SAIJ160BX70-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×70 | 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 SAIJ160BX70-20 Is Used
Press Stroke Calibration
Dial in the exact 50-70mm pressing depth during machine setup, allowing operators to fine-tune the end position for delicate assembly tasks without changing hardware.
Product Size Changeover
Adapt a heavy-duty production line to new part dimensions by adjusting the rear stopper screw, trimming the stroke up to 20mm to accommodate varying component heights.
Heavy Clamping Adjustments
Secure large workpieces with 10053N of force while using the adjustable end-stop to prevent over-travel, ensuring precise clamping positions on varied fixtures.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX70-20 the Right Cylinder?
Select this 160mm bore actuator when an application demands high thrust combined with exact end-position tuning during commissioning or product size changeovers. If 10053N of push force at 0.5MPa is excessive, stepping down to the 125mm bore yields 6136N, whereas moving up to the 200mm bore provides 15708N. Choose the SAIJ adjustable-stroke variant over a fixed SAI model when you need to dial in a 50-70mm travel window on the fly rather than machining external stops.
When matching an ISO 15552 replacement, verify the 160mm bore, 70mm nominal stroke, 20mm adjustment range, PT tapered port thread, and SUS304 rod material. Because the nominal stroke is 70mm, an external guide is not strictly required for side-load support, but the 40mm rod diameter handles substantial lateral stress if minor misalignment exists. For applications requiring true load holding without live air, consider the AirTAC SAIL or BSAI series instead of relying on the rear stopper.
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 SAIJ160BX70-20 FAQ
At 0.5MPa operating pressure, this 160mm bore cylinder provides 10053N of push force and 9425N of pull force. It is designed to operate at a speed of 30-500mm/s.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 70mm nominal stroke by up to 20mm, resulting in a usable travel window of 50-70mm. It is a travel stop only and does not lock the load without live air pressure.
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