These Dynamically Damped Ø1.5" Mounting Posts offer a vibration-limiting alternative to long lengths of Ø1.5" solid steel posts. Damped posts are ideal for applications where mechanical vibrations must be limited, such as beam steering and imaging. Ring down testing was performed to compare the damping times for damped carbon steel and solid stainless steel posts (see the Ring Down Test tab for a summary of the test results).
Damped posts are available in four lengths: 8" (203.2 mm), 10" (254.0 mm), 12" (304.8 mm), and 14" (355.6 mm). The damped posts are fabricated from steel with a nickel-plated matte finish and utilize internal damping weights containing no lead. Using an engineered passive vibration dampening design, an internal suspension system allows weights inside the post to move independently from the post's outer body, thus allowing vibrational energy to quickly be absorbed and dissipated. On imperial versions, the permanently attached mounting base has four 1/4" counterbores for breadboards with a 1.00" hole spacing, while the metric versions have M6 counterbores for breadboards with a 25.0 mm hole spacing. The top cap is engraved with the part number for identification. The posts also feature a top-located 1/4"-20 (M6) tapped hole to allow components to be secured to the top of the post.
| Item # | DP8A(/M) | DP10A(/M) | DP12A(/M) | DP14A(/M) |
|---|---|---|---|---|
| Damping Timea | 20 ms | 47 ms | 61 ms | 73 ms |
| Resonant Frequency (Theoretical) | 780 Hz | 435 Hz | 300 Hz | ~200 Hz |
| Length | 8" (203.2 mm) | 10" (254.0 mm) | 12" (304.8 mm) | 14" (355.6 mm) |
| Weight | 1.56 kg (3.44 lbs) | 1.91 kg (4.21 lbs) | 2.14 kg (4.72 lbs) | 2.4 kg (5.3 lbs) |
| Top-Located Tapped Hole | 1/4"-20 (M6); 0.33" (8.4 mm) Deep | |||
| Mounting | Permanent Base with Four 1/4" (M6) Counterbores for Breadboards with 1.00" (25.0 mm) Hole Spacing | |||
