The 6907-2RS is a single-row, thin-section deep groove ball bearing from the ISO 6900 series, fitted with contact rubber lip seals on both faces. The seals bond to the outer ring and bear physically against a machined shoulder on the inner ring, forming a positive barrier that actively keeps fine dust, airborne particles, moisture, and light contamination away from the ball complement and grease fill. On a 35 mm shaft, the 6907-2RS delivers the 6900 series' compact 55 mm outer diameter alongside maintenance-free sealed operation — a pairing that makes it the bearing of choice wherever space is fixed, the environment is less than controlled, and re-lubrication access is impractical or simply not planned.