Eje de centro CeramicSpeed Ruta / Mtb PF4630 para eje 30mmCompatible con multiplicaciones de eje 30mm y cuadros con ejes de centro PF30, BBright Nuevo en su empaque original El pedalier CERAMICSPEED PF4630 es compatible con cuadros con pedalier con diámetro de 46 mm, ancho de caja de 68/79/86 mm y bielas con eje de 30 mm.Las bolas de Ceramicspeed son más redondas, más duras, más suaves, más rígidas y más ligeras que otras bolas de acero y de cerámica de otras marcas.Permiten ahorrar energía gracias a su fricción extremadamente baja, y esa menor resistencia de rodadura contribuye al aumento de la transferencia de potencia en el pedaleo. Es por ello que muchos equipos y atletas profesionales los eligen. CeramicSpeed es uno de los principales proveedores del mundo de rodamientos cerámicos con más de 15 años de experiencia. La empresa se compone de dos canales de venta especializados, centrados en el ciclismo y en aplicaciones industriales. Todos sus rodamientos son manufacturados en Dinamarca.This bottom bracket is when you have a PF30, BBright, or 386EVO shell frame and want to install a BB30 crankset into the frame. All have a 46mm inner diameter and smooth insides, though the widths vary from 68mm to 86mm. The crank has a 30mm diameter spindle.This bottom bracket features nearly zero loss of power due to friction, thanks to the bearings. Either our Standard or Coated Bearings. Both have super round, super smooth CeramicSpeed balls rolling on hardened-steel races. The Coated version has a metallic coating laid onto the races, making them even harder and smoother, resulting in longer life and lower drag. They come installed in cups.In The Box 2 cups with bearings installed. 2 1mm spacers. 2 0.5mm spacers. 2 dust covers. Wave washer. Spacer tube. 10ml All Round Grease. Sticker sheet.30mm thru-axle cranks are increasingly popular due to high stiffness and low weight. 46mm inner diameter bottom brackets are popular for the freedom they offer designer in building frames. Because of the variety of widths, the cups here extend into the shell and come with a telescoping spacer tube to further seal and stiffen the system.The bottom bracket is already stiff thanks to hard ceramic bearings and hardened-steel races. Thanks to CeramicSpeed, it’s also nearly zero drag. Standard Bearings typically have frictional drag of 0.3-0.4 watts per set. That’s in the range of a 75% drag reduction versus conventional bb’s. The bearings last at least 3x longer than other bearings.Change the grease for your rides. TT and Track, All Round, and LongLife are greases CS designed. The first is the least drag, the last is the most durable. All Round, in the middle, comes in road bearings.