The deep groove ball bearing 61844-M is a single row design with a solid brass cage (M). Bore diameter is 220.0 mm, outside diameter 270.0 mm, and width 24.0 mm, with a net mass of 2.997 kg. Limiting speed is rated at 4150.0 1/min, while the reference speed reaches 2320.0 1/min. Radial internal clearance falls within CN (Group N), and the bore type is marked Z. The CN clearance class supports standard running conditions without added preload requirements, and the solid brass cage keeps the balls evenly guided across the full speed range, reducing friction losses at higher rotational speeds. As the bearing has no built-in sealing, lubrication and contamination protection must be provided externally, matching applications where the surrounding housing supplies sealing and grease or oil retention.