Supply: CAT various types of silencer, suitable for Cat excavator, Cat chassis, rotary drilling rig.

 

CATERPILLAR excavator series: 312D, 313D, 315D, 318D, 320C, 320CL, 320D, 320DL, 323D, 323DL, 324D, 326D, 325C, 325D, 329D, 329DL, 330D, 330C, 330CL, 330DL, 336D, 336DL, 345C , 345CL, 345D, 345DL, 349D, 349DL, 365C, 365CL, 374D, 374DL, 385C, 385CL, 390D, 390DL, 305.5, 306, 307, 307C, 307D, 308, 308C, 308D, 305.5E, 306E, 307E, 308E, 305.5E2, 306E2, 307E2, 308E2, 313D2, 318D2, 320D2, 323D2, 326D2, 329D2, 330D2, 336D2, 349D2, 374F, 390F.

Caterpillar engine series: 4M40, C4.2, C6.4, C6.6, C7, C-9, C9, C13, C15, C18, C10, C11, C12, C16, C-16, C-15, C27, C32, C175; 3066, 3056, 3054, 3116, 3126, 3204, 3304, 3306, 3406, 3408, 3412, 3456, 3504, 3508, 3512, 3516, 3606, 3608, 3612, 3616.

Original and deputy factory supply at the same time

 

Sound Rating for Generator Silencers

The sound intensity emitted from an exhaust system is measured in Decibels (dB). The dB is a unit of measurement used to express the ratio of one physical property to another represented on a logarithmic scale. Decibel A Weighted (dBA) is measurement used to approximate the human ear response to sound.

In the early days of rating silencers, there were four basic grades. Industrial, commercial, residential, and hospital grades were considered the industry standard in silencer manufacturing. During this period, the amount of sound reduction for grade varied between manufacturers. The Electrical Generating Systems Association (EGSA) developed a rating guide that provided consistent silencer ratings for any manufacturer belonging to the association. This has become industry standard for manufacturing.

Common grades are:
 

• Industrial Grade - Exhaust noise reduction of 15 to 20 dBA
• Residential Grade - Exhaust noise reduction 20 to 25 dBA
• Critical Grade - Exhaust noise reduction of 25 to 32 dBA
• Super Critical Grade - Exhaust noise reduction 30 to 38 dBA
• Hospital Grade - Exhaust noise reduction of 35 to 42 dBA
• Hospital Plus Grade - Exhaust noise reduction of 35 to 50 dBA
• Extreme Grade - Exhaust noise reduction of 40 to 55 dBA
• Super Extreme Grade - Exhaust noise reduction of 45 to 60 dBA