Double row deep groove ball bearings are very suitable for bearing arrangements where the load carrying capacity of a single row bearing is inadequate. For the same bore and outside diameter. Double row deep groove ball bearings are only available as open bearings (without seals or shields). Cages SKF double row deep groove ball bearings are fitted with two snap-type, ball centred glass fibre reinforced PA66 cages. When used at high temperatures, some lubricants can have a detrimental effect on polyamide cages. Specifications: Dimension Standards: ISO 15. Tolerances: ISO 492. Internal Clearance: ISO 5753-1. Permissible Misalignment: ≈ 2 minutes of arc. Misalignment increases bearing noise and reduces bearing service life, and when it exceeds the guideline values these effects become particularly noticeable.