Airtac SAIJ160 Adjustable Cylinder SAIJ160AX850-20S
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160AX850-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø160mm bore and 850mm 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
- Stroke850 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ160 Adjustable Cylinder SAIJ160AX850-20S
The AirTAC SAIJ160X850-20-S is a double-acting ISO 15552 profile cylinder featuring a robust 40 mm SUS420J2 stainless steel rod and a rear-mounted stroke adjuster. It provides a substantial 10053 N thrust at 0.5 MPa, scaling up to 18095 N at 0.9 MPa. Because this 850 mm stroke is a made-to-order non-standard length exceeding the 1500 mm standard maximum, the rear adjuster becomes critical for fine-tuning the end position during machine commissioning without machining external stops. The built-in -20 mm mechanism creates an exact 830-850 mm usable travel window.
This extruded aluminum barrel design includes dual sensor grooves for CMSE and DMSE switches, with the -S magnet already equipped for precise position detection. The PT tapered G3/4 port threads ensure a high-flow pneumatic connection. Remember that the rear stopper and variable air cushions only decelerate the load at travel ends; neither holds the load without live air. For true load-holding, an external SAIL or BSAI locking cylinder is required.
Airtac SAIJ160 Adjustable Cylinder SAIJ160AX850-20S Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160AX850-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø160 mm |
| Stroke | 850 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 SAIJ160AX850-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 160 | Bore size in mm. |
| ×850 | 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 SAIJ160AX850-20S Is Used
Heavy Press Tuning
Dial in the exact 830-850 mm end position for a heavy press during commissioning, using the rear adjuster to compensate for mechanical tolerances without re-engineering the tooling.
Product Line Changeover
Quickly shift the retract end-stop by up to 20 mm when switching between product variants on an automated line, saving setup time versus swapping cylinders.
Large Material Handling
Move heavy pallets or components using the 18095 N push force at 0.9 MPa, relying on the SUS420J2 rod for durability in demanding industrial environments.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160AX850-20S the Right Cylinder?
Select this 160 mm bore model when an application demands high thrust (10053 N push at 0.5 MPa) that a 125 mm bore (6136 N) cannot achieve, but without stepping up to the massive 200 mm size (15708 N). The adjustable 830-850 mm travel window is chosen over a fixed SAI cylinder when you need variable end-stops for product changeovers or to dial in exact positioning during machine setup. To replace this cylinder, match the 160 mm bore, 850 mm stroke, 20 mm adjustment, PT G3/4 port, and -S magnet.
Because this unit features an 850 mm stroke, the 40 mm rod diameter and M36x2 rod thread carry significant side-load risks if the load is unsupported. An external guide rail is strongly recommended to prevent rod binding over this long travel distance. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options.
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 SAIJ160AX850-20S FAQ
At 0.5 MPa operating pressure, this 160 mm bore cylinder provides 10053 N of push force and 9425 N of pull force. At 0.9 MPa, the push force increases to 18095 N.
The rear adjuster acts as a mechanical stop that lets you trim the effective travel back by up to 20 mm. For this 850 mm stroke SKU, it creates an 830-850 mm usable travel window for fine-tuning end positions without replacing the cylinder.
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