Eternal Hydraulic Permco Series Gear Pumps
Our company all use needle roller bearing gear pumps. The comparisonwith oil-free bearing gear pumps is as follows:
(1) Double row needle roller bearing gear pump:
Advantages: 1. lts bearing capacity is greatly enhanced, and its servicelife is increased by 30%; 2. The requirements for the cleanliness ofhydraulic oil are low, and the anti-pollution ability is strong.Disadvantages: The cost is higher than that of low oil bearings.
(2) Oi-free bearing gear pump:
Advantages: 1. The cost is lower than that of needle roller bearings;2. The noise is relatively small.Disadvantages: 1. High requirements for hydraulic oil cleanliness andlow anti-pollution ability: 2. The service life is lower than that of doublerow needle roller bearings;
Features of Dump Pumps
Our company all use needle roller bearing gear pumps. The comparison with oil-free bearing gear pumps is as follows:
Double row needle roller bearing gear pump
1. Its bearing capacity is greatly enhanced, and its service life is increased by 30%;
2. The requirements for the cleanliness of hydraulic oil are low, and the anti-pollution ability is strong.
Oil-free bearing gear pump
1. The cost is lower than that of needle roller bearings;
2. The noise is relatively small.