Hand transmitted vibrations caused by orbital hand sanding machines

Area of Science:

• Occupational health and safety
• Mechanical engineering
• Ergonomics

Background:

• Hand-arm vibration (HAV) is a significant occupational hazard.
• Orbital sanding machines are widely used in various industries.
• Understanding vibration exposure is crucial for preventing Hand-Arm Vibration Syndrome (HAVS).

Purpose of the Study:

• To measure and analyze vibration levels on specific orbital hand sanding machines.
• To compare measured vibrations against established international exposure limits.
• To determine daily vibration exposures for different sanding machine models.

Main Methods:

• Vibration measurements were conducted on FESTO LRB-W1, LRB-T1, and RTL-F1 orbital hand sanding machines.
• Accelerations were measured at designated points on the machine handles.
• Weighted vibration accelerations were analyzed according to ISO 5349, ISO/TC 108/SC4/14, and NF E90-402 standards.

Main Results:

• Weighted vibration acceleration levels were quantified for each machine model.
• Measured vibration levels were compared to the daily exposure limits defined by relevant standards.
• Daily vibration exposures were calculated for each type of orbital hand sanding machine.

Conclusions:

• The study provides critical data on vibration exposure from specific orbital sanding tools.
• Findings help in assessing the risk of HAVS for operators using these machines.
• Results inform the implementation of effective risk management strategies in workplaces.