Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-20
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 425mm 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
- Stroke425 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-20
The AirTAC SAIJ160X425-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the nominal 425 mm travel by up to 20 mm. This creates a highly useful 405-425 mm usable window, letting you fine-tune the retract end position during commissioning without adding external stops. It delivers substantial thrust, generating 10053 N of pull force at 0.5 MPa and up to 18095 N at 0.9 MPa.
This specific SKU is built with a SUS304 stainless steel rod (option B) and utilizes PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic sensors. Remember that the rear adjuster acts only as a travel stop to set deceleration; it does not hold the load without live air pressure, so a SAIL or BSAI variant is needed for true load-holding.
Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-20 Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 425 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 SAIJ160BX425-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×425 | 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 SAIJ160BX425-20 Is Used
Heavy Press Tuning
Dial in the exact 405-425 mm end position for large assembly presses during initial commissioning without machining custom spacers.
Product Changeover
Quickly adjust the retract stop to accommodate different pallet sizes on a heavy-duty conveyor line in seconds.
Machine Setup
Use the rear stopper to fine-tune the stroke window on automated plant equipment, ensuring perfect alignment before locking in the cycle.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX425-20 the Right Cylinder?
Choose this 160 mm bore when a 125 mm bore (which provides 5734 N pull at 0.5 MPa) cannot generate enough force for your heavy-duty application. An adjustable stroke is ideal here because it allows precise variable end-stops for product-size changeovers on a line, whereas a fixed SAI cylinder would require shimming or swapping to achieve the same positioning.
Because this 425 mm stroke is quite long, the 40 mm diameter rod and M36x2 thread will still experience leverage forces; an external guide is strongly recommended to prevent side-loading damage. This cylinder is dimensionally interchangeable per ISO 15552 and uses the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR brackets.
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 SAIJ160BX425-20 FAQ
At 0.5 MPa it provides 10053 N of pull force and 14074 N of push force. At 0.9 MPa, the push force increases to 18095 N.
The rear adjuster screw lets you shorten the 425 mm nominal stroke by up to 20 mm, giving a usable travel window of 405-425 mm. It acts as a physical stop for end-position tuning and does not lock the load without continuous air pressure.
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