Adda AD4010 Series 40mm Low Voltage Axial Fans – Adda AD0412MX-G70(XT1), This low-cost 12V DC fan from the Adda 4010 series has hypro bearings that have better friction and wearproof performance and a longer life than sleeve bearings. Adda AD0412MX-G70(XT1) Axial Fan Hypro Bearing 12 VDC 40 x 40 x 10mm