## Ball Bearing 63/28 C3 28x68x17mm Crankshaft Junak A robust and precisely manufactured 63/28 C3 ball bearing with dimensions of 28x68x17mm, dedicated to the crankshaft of Junak motorcycles. This is an essential element ensuring smooth and trouble-free engine operation. The Junak brand guarantees high quality and durability, which translates into a long service life of the bearing. ### Technical Specifications: * **Inner Diameter:** 28mm * **Outer Diameter:** 68mm * **Width:** 17mm * **ISO Code:** 63/28 * **Internal Clearance:** C3 (increased radial clearance) ### Advantages of C3 Bearing: The increased radial clearance C3 compensates for the thermal expansion of the metal that occurs during engine operation. This allows the bearing to operate stably and reliably even at high temperatures, which is especially important for ensuring a long crankshaft lifespan. ### Why Choose a Junak Bearing? Junak is a brand known for producing robust and reliable motorcycles. By choosing a Junak bearing, you are investing in quality and peace of mind. The precision of workmanship and the selection of materials guarantee optimal engine operation and minimize the risk of failure.