Descriptions

• ZTTO Bicycle Rear Derailleur Ceramic bearing Pulley Jockey Wheel All the result of the simulations and the experimentations indicated that the ceramic ball bearings&; performances are very good, particularly within the low load and high-speed surroundings Size:11T Structure: Ceramic bearing Material: aluminum alloy 7075 Color: Black Red Blue Silver Gold Weight: about 7 Fit for 4/5/6 MM roller screw axis Apply for most of rear derailleur on the market ZTTO CERAMIC PULLEY Suitable for all cycling applications, whether or not it is road, MTB, or triathlon, these pulley wheels will optimize your pace rear derailleur with reduced friction and prolonged lifetime Being the quickest spinning bearings on your bike, an improve with our high-performance pulley wheels are an effective way to save calories or ride quicker Aluminum Pulley Wheels Weighing solely astonishing 7 grams, these light-weight pulley wheels are fitted with hybrid ceramic bearings, which minimize friction and feature increased lifetime The aluminum alloy is terribly durable, and along with the pulley design, the set optimizes the overall functionality of your derailleur The removable design also makes the upkeep much simpler POM Bearing Rings For handbook pulley, we use POM bearing rings rather than steel bearing rings, POM is an engineering thermoplastic used in precision parts requiring high stiffness, low friction, and ideal dimensional balance They are also extremely mild weight, that's the reason we are able to make a 7 grams pulley wheel They also are proof against water and salty surroundings and they will by no means desire lubrication or getting rusty ZTTO Premium Hybrid Ceramic Bearings About ZTTO Premium Hybrid Ceramic Bearings ZTTO bearings characteristic rolling balls made from a ceramic material The rolling balls are constructed of silicon nitride or zirconia ceramics Using ceramic bearings in hubs, backside brackets, and pulleys will lower friction By decreasing the coefficient of friction, you can accelerate faster and hold velocity with much less power enter Benefits of ceramic bearings: Ceramic bearings have 10% much less friction than metallic bearings Bearings are extremely wear resistant because ceramic material is much harder than the toughest steel bearings Silicon nitride balls are 60% lighter than steel balls Safe operation even when utilizing low quantities lubricant, which reduces the viscous drag friction from lubricant When used with special seals and lubrication, the friction in ceramic bearings could be 20-30 occasions lower than steel bearings with normal friction seals and traditional lubrication There are several types of ceramic bearings at the market, equivalent to full ceramic bearings, metal ceramic bearings and nylon ceramic bearings Full ceramic bearings make use of either ceramic balls and race These bearings are impervious to corrosion and infrequently require lubrication if at all Due to the stiffness and hardness of the balls and race these bearings are noisy at high speeds The stiffness of the ceramic makes these bearings brittle and susceptible to crack beneath load or influence Because both ball and race are of comparable hardness wear can end in chipping at excessive speeds of either the balls and the race this will cause sparking So, instead of the full ceramic bearings, the finest resolution for bicycle is hybrid bearings ZTTO use hybrid ceramic bearings for high-end purposes Compared to all steel bearings, they have lower friction, lighter weight and longer service existence They also are much less susceptible to disasters caused by dirt, grime and deficient lubrication Ceramic bearings have 10% much less friction than metallic bearings Bearings are ultra put on resistant because ceramic materials is far harder than the toughest steel bearings Silicon nitride balls are 60% lighter than steel balls Safe operation even if using low quantities lubricant, which reduces the viscous drag friction from lubricant After-sales service: We will verify the goods high quality earlier than shipment If there are some unforeseen issues happen, we hope to solve the issues with buyer smoothly within the following ways: 1 If it's quality problem, customer can submit argue inside 15days after receiving the goods, yet buyer should provide pictures or video and other evidence to vendor for title 2 Man-made damaged, buyers take full duty three high quality processing choice: 1) The customer go back the goods to us and chargeable for return delivery charges We will ship a brand new product to customer and pay for the resend shipping cost, when we acquire the products 2) If the goods (total price adding transport freight is less than 5USD) has quality problems, we can resend a brand new product in next order; if buyer don not plan to make a brand new order within the close to term, customer can pay the resend shipping charge and ask us to resend a brand new product Tax: Paying tax is the duty of each citizen, clearance is the responsibility of the buyer, customer deserve to accountable for the all of taxes If buyer refuse to receive the products for tax problem, buyer need to responsible for freight out and home Feedback: 1 rely on our visitor pleasure to be triumphant Therefore, your feedback is incredibly principal to us 2 you're convinced with our products, please leave us high quality feedback We will go away a favorable suggestions to you later three Please touch us through electronic mail or message , earlier than leaving any adverse or neutral feedback We will take care of the problems as quickly as probable Working Time: 9:00 am - 19:00 pm(Monday – Saturday) Beijing Time

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