Differences in the types of bearings and the direction of grooving in shielded pumps
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What are the differences between bearings produced by Nikkiso, Dalian Huanyou, and Dalian Empire? How should one choose between axial slotted, axial straight-groove, and radial grooved bearings? Are there any specific requirements regarding the rotation direction of the axial helical grooves?
Relationship between the type of Dalian Empire shield pump and the presence of straight grooves in the bearings. Equipment type: Without connector; With connector (A). Front bearing, Rear bearing; Front bearing, Rear bearing. Type F (internal circulation): No straight grooves; With straight grooves; With straight grooves; With straight grooves. Type F (external circulation): With straight grooves; With straight grooves; With straight grooves; With straight grooves. Type R: No straight grooves; With straight grooves; With straight grooves; With straight grooves. Type B: With straight grooves; No straight grooves. Type D: With straight grooves; No straight grooves. Type K: With straight grooves; With straight grooves. Types F-X: No straight grooves; With straight grooves; With straight grooves; With straight grooves. Type F-M: With straight grooves; With straight grooves
Nikki Seisakusho: U-shaped groove; Dalian Lianhuyou, Dalian Empire: V-shaped groove + straight groove
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