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Crankshaft bearings are always replaced when re-building an engine because they are wear components. Heat, pressure, chemical attack, abrasion and loss of lubrication can all contribute to the deterioration of the bearings. Our featured ATV crankshaft bearings& seals deliver high performance to every ATV engine for a smoother, more comfortable ride while on or off the road.
ATV Crankshaft Bearings & Seals The crankshaft has a linear axis about which it rotates, typically with several bearing journals riding on replaceable bearing (the main bearings) held in the engine block. As the crankshaft undergoes a great deal of sideway loads from each cylinder in a multi-cylinder engine, it must be supported by several bearings –not just one at each end. This was an issue covered at the rise of V8 engine with their shorter crankshafts, in preference to straight-8 engines. The long crankshafts of the latter suffered from an unacceptable amount of flex when engine designers began using higher compression ratios and higher rotational speeds. Cometic Gasket ATV Crankshaft Bearings & Seals The Cometic Gasket ATV Crankshaft Bearing/Seal Kits are comprised of three layers of Stainless Steel. Cometic Gasket uses Stainless steel to achieve improved strength, elasticity and resist corrosion. The outer layers are embossed and coated on both sides with a flouroelastomer rubber-based material (Viton) designed to meet the demands of harsh sealing environments, load conditions and surface finishes. The Viton coating is heat resistant to 2500C or 4820F The center or shim layer of the gasket is comprised of an uncoated Stainless Steel layer which can be varied to accommodate multiple thickness requirements. The gaskets are ideal for both aluminum heads to cast iron blocks and aluminum heads to aluminum blocks. The composition of every Cometic Gasket product provides the ability to withstand the shearing forces created by aluminum heads on cast iron blocks. No re-torque is necessary. By design, the gaskets promote an even torque load across the sealing surface allowing for measurable reduced bore distortion.