| |
|
|
|
|
| Recommended Cleanliness Code Charts -
ISO 4406 |
|
| PUMPS |
|
| Pressure |
<140 Bar |
<210 Bar |
>210 Bar |
|
| Fixed
Gear |
20/18/15 |
19/17/15 |
18/16/13 |
|
| Fixed Vane |
20/18/15 |
19/17/14 |
18/16/13 |
|
| Fixed Piston |
19/17/15 |
18/16/14 |
17/15/13 |
|
| Variable Vane |
19/17/15 |
18/16/14 |
17/15/13 |
|
| Variable Piston |
18/16/14 |
17/15/13 |
16/14/12 |
|
| VALVES |
|
| Pressure |
|
<210 Bar |
>210 Bar |
|
| Directional
(solenoid) |
|
20/18/15 |
19/17/14 |
|
| Pressure (modulating) |
|
19/17/14 |
19/17/14 |
|
| Flow Controls (standard) |
|
19/17/14 |
19/17/14 |
|
| Check Valves |
|
20/18/15 |
20/18/15 |
|
| Cartridge Valves |
|
20/18/15 |
19/17/14 |
|
| Screw-in Valves |
|
18/16/13 |
17/15/12 |
|
| Prefill Valves |
|
20/18/15 |
19/17/14 |
|
| Load-sensing Directional Valves |
|
18/16/14 |
17/15/13 |
|
| Hydraulic Remote Controls |
|
18/16/13 |
17/15/12 |
|
| Proportional Directional (throttle) |
|
18/16/13 |
17/15/12* |
|
| Proportional Pressure Controls |
|
18/16/13 |
17/15/12* |
|
| Proportional Cartridge Valves |
|
18/16/13 |
17/15/12* |
|
| Proportional Screw-in Valves |
|
18/16/13 |
17/15/12 |
|
| Servo Valves |
|
16/14/11 |
15/13/10* |
|
| ACTUATORS |
|
| Pressure |
<140 BAR |
<210 BAR |
>210 BAR |
|
| Cylinders |
20/18/15 |
20/18/15 |
20/18/15 |
|
| Vane Motors |
20/18/15 |
19/17/14 |
18/16/13 |
|
| Axial Piston Motors |
19/17/14 |
18/16/13 |
17/15/12 |
|
| Gear Motors |
21/19/17 |
20/18/15 |
19/17/14 |
|
| Radial Piston Motors |
20/18/14 |
19/17/15 |
18/16/13 |
|
| Swashplate Design Motors |
18/16/14 |
17/15/13 |
16/14/12 |
|
| HYDROSTATIC TRANSMISSIONS |
|
| Pressure |
<140 Bar |
<210 Bar |
>210 Bar |
|
| Hydrostatic
Transmissions |
17/15/13 |
16/14/12* |
16/14/11* |
|
| In-loop fluid |
|
| COJINETES/RODAMIENTOS |
Widman International SRL |
|
| Ball
Bearing Systems |
15/13/11* |
|
|
|
| Roller Bearing Systems |
16/14/12* |
|
|
|
| Journal Bearings (high speed) |
17/15/13 |
|
|
|
| Journal Bearings (low speed) |
18/16/14 |
|
|
|
| General Industrial Gearboxes |
17/15/13 |
|
|
|
| *Requires precise sampling practices to verify
cleanliness levels. |
|
| Widman International
SRL - Bolivia |
|