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Reach BikePro on a 24 hour basis at 803-280-1537 Terry Dunbar is on duty as the technical expert, who also speaks Spanish as well as English and has quantities on hand information. Call her now for any questions about Bike Pro you may have. |
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Bottom Brackets Brake Systems
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Syncros Bottom BracketsSYNCROS HARDCORE TITANIUM SEALED BOTTOM BRACKET
The Hardcore is very similar to the Pro Series in construction and technique. It uses the same spindle with a water sleeve between two pressed on bearings. The bearing cups are machined from aluminum alloy rod and house the bearings in the same manner. The cups have O-rings at the spindle exits and use the same lockrings. The cups have an anodized Grey/Silver appearance. They are slightly longer, at 18.43mm, than the 16mm wide Pro Series cups in order to house bearings that are slightly wider than those used in the Pro Series. The Pro Series uses a 7mm wide cartridge bearing that houses a single set of ball bearings within a tiny plastic retainer between an inner and outer steel tube that serve as races. The Hardcore uses 10mm wide cartridge bearings that enclose two sets of ball bearings, each in their own plastic retainer. The two retainers are sealed side by side, and the same wider inner and outer tubing races. The added bearings and their contact surfaces displace the load over a greater area on the spindle. The wider bearing is also intended to minimize flex in the hollow Titanium spindle. The bearing is made by INA and the seal is marked 61903RS and the inner race bears the marking 3903 2RS C3. The water sleeve for the Hardcore is made of White plastic. It comes with English threads, with spindle lengths of 107mm, 109mm, 113mm, 117.5mm, 122.5mm, 127mm, or 131mm. The weight of 127.5mm Syncros Hardcore B/B spindle is 190.5 grams. Crank bolts are not included. Spindle Length-07-09-13-17-22-27-31 /T You need to call for price |
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In-depth Information About Metals Aluminum Aluminum is extracted electrolytically from bauxite ore. It is made by the electrolysis of aluminum oxide which is found in larger concentrations within bauxite ore. Bauxite is a mixture of the hydroxides of aluminum, together with other impurities such as oxides of iron, titanium, and silicon. Bauxite is produced by the weathering and change of aluminum silicate rocks usually found in tropical and semitropical regions where climate has produced an accelerated weathering process. Bauxite is not a rare ore and is widely available in the US, the Caribbean, and Europe. Approximately 4 pounds of read the full article... Beryllium Beryllium is a specialty metal that is steel-grey metal in color, with an extremely low density, making it very light weight. At 1.85 grams to the cubic centimeter, its density compares to that of magnesium. It is also a high strength metal, making it possible to design light weight, thin membered parts with ahigh stiffness. A column made of beryllium to support a load placed directly downward on top of it, will have a greater load carrying capacity, and be lower in weight than any other metal of equal size. Until the 1950's beryllium was used read the full article... Titanium The element titanium was discovered in 1763 by an English cleric, William Gregor who was an amateur chemist with an inquiring mind. It was in the black sands of Cornwall that he discovered the new element that had up to that time, attracted little scientific interest. A few years later, an Austrian, Klaproth, extracted the same element from an ore widely known as "rutile", which is a mineral consisting of titanium dioxide (one titanium atom, two oxygen atoms), that is a reddish-brown substance with a slight metallic luster. While rutile is the highest grade read the full article... Metallurgic Hardness Testing There are three types of tests used with accuracy by the metals industry,they are the Brinell hardness test, the Rockwell hardness test, and the Vickers hardness test. Hardness is the property of a metal which gives it the ability to resist being permanently deformed (bent, broken, or have its shape changed), when a load is applied. The greater the hardness of the metal, the greater resistance it has to deformation. Since the definitions of metallurgic ultimate strength and hardness are rather similar, it can generally be assumed read the full article... |
