Airtac SAIJ160 Adjustable Cylinder SAIJ160BX400-50
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160BX400-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 400mm 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
- Stroke400 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX400-50
The AirTAC SAIJ160X400-50 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window down from a 400 mm nominal stroke to a 350-400 mm usable range. It delivers massive thrust, generating 14074 N of push force and 9425 N of pull force at 0.7 MPa. This bore size uses a robust 40 mm piston rod and G3/4 PT tapered ports to handle high airflow demands.
Equipped with a SUS304 stainless steel rod, this version offers superior corrosion resistance for harsh or washdown environments. The extruded aluminum barrel includes sensor grooves on both sides for mounting position detectors, while the variable air cushions at both ends work alongside the rear mechanical stopper to decelerate heavy loads smoothly over the 36 mm cushion length.
Airtac SAIJ160 Adjustable Cylinder SAIJ160BX400-50 Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160BX400-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 400 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 SAIJ160BX400-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×400 | 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 SAIJ160BX400-50 Is Used
Heavy Press Tuning
Dial in the exact 350-400 mm end-position for heavy pressing or forming operations during initial setup without machining custom spacers.
Product Changeover
Quickly adjust the stroke stopper to accommodate different product lengths on a packaging line, reducing machine downtime between runs.
Large Assembly Jigs
Position heavy components accurately using the 14074 N push force, relying on the SUS304 rod for durability in industrial environments.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160BX400-50 the Right Cylinder?
Choose this 160 mm bore adjustable-stroke cylinder when an application requires extreme force combined with precise end-position tuning at commissioning or during product changeover, without the need to physically swap out the cylinder or add external stops. If you need less force, stepping down to a 125 mm bore yields 8590 N of push at 0.7 MPa, while moving up to a 200 mm bore provides 21991 N.
Because the 400 mm stroke is substantial, the 40 mm rod helps manage side loads, but an external guide is still recommended for unsupported loads to prevent premature wear. Remember that the rear adjuster acts only as a travel stop and the air cushions only decelerate the load; neither will hold the load without live air pressure. For true fail-safe load holding, consider the SAIL (air-released lock) or BSAI (clamp-lock) series. This model is dimensionally interchangeable per ISO 15552 and uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAIJ160BX400-50 FAQ
The rear adjuster screw acts as an external stopper, allowing you to shorten the effective travel from the 400 mm nominal stroke by up to 50 mm, giving a usable window of 350-400 mm. It is a travel stop, not a lock, and does not hold the load without air pressure.
At 0.7 MPa, the 160 mm bore generates 14074 N of push force and 9425 N of pull force. The standard speed range for this bore size is 30-500 mm/s.
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