Airtac SAIJ160 Adjustable Cylinder SAIJ160AX850-40
The AirTAC Airtac SAIJ160 Adjustable Cylinder SAIJ160AX850-40 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 SAIJ160AX850-40
The AirTAC SAIJ160X850-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that permits fine-tuning of the end-of-travel position. With a nominal 850 mm stroke and a 40 mm adjustment range, the usable travel window can be dialed back to 810 mm. This allows precise commissioning calibration without needing to physically swap the cylinder or bolt on external stops. The bore delivers 14074 N of push force at 0.7 MPa and 18095 N at 0.9 MPa.
The cylinder is built with a SUS420J2 stainless steel rod (option A) and uses PT tapered port threads. It features variable air cushions at both ends to manage deceleration, but the rear adjuster acts strictly as a travel stop and does not hold the load without live air pressure. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU is not configured with a magnet for CMSE or DMSE switches.
Airtac SAIJ160 Adjustable Cylinder SAIJ160AX850-40 Technical Specifications
| Model | Airtac SAIJ160 Adjustable Cylinder SAIJ160AX850-40 |
|---|---|
| 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 SAIJ160AX850-40
| 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 SAIJ160AX850-40 Is Used
Heavy Machinery Changeover
Adjusts the retract end-position by up to 40 mm during product size changes on heavy manufacturing lines, eliminating the need to physically swap out long-stroke actuators.
Variable End-Stop Setup
Provides a tunable 810-850 mm travel window for equipment that requires precise calibration of the retracted position during initial commissioning.
Large Assembly Calibration
Fine-tunes the stroke end-point on large assembly presses to accommodate varying part dimensions without adding bulky external mechanical stops.
Is the Airtac SAIJ160 Adjustable Cylinder SAIJ160AX850-40 the Right Cylinder?
Select this 160 mm bore when an application requires heavy thrust combined with variable end-stop positioning. If the 810-850 mm adjustable window is excessive, stepping down to a 125 mm bore provides 8590 N of push force at 0.5 MPa, which might better suit lighter loads. Conversely, if the setup demands even higher force, the 200 mm bore offers 21991 N at 0.7 MPa. The adjustable rear screw is ideal for machine changeovers where product sizes vary, whereas a fixed-stroke SAI cylinder is preferred for repetitive single-purpose tasks.
Because the 850 mm stroke is substantial, the 40 mm diameter carbon steel rod and M36x2 thread require careful alignment; long unsupported strokes still need an external guide to prevent side-loading damage. For load-holding without live pressure, this plain SAIJ cannot lock the load, so you would need to look at the SAIL or BSAI series instead. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
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 SAIJ160AX850-40 FAQ
The 160 mm bore generates 14074 N of push force at 0.7 MPa and 18095 N at 0.9 MPa. The pull force is 9425 N at 0.5 MPa. It operates at a speed range of 30-500 mm/s.
The rear adjuster acts as a mechanical stop that trims the effective travel back from the 850 mm nominal stroke down to a minimum of 810 mm. It sets the end position but does not lock or hold the load without live air pressure.
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