The cage for such a bearing is not pre-fabricated and reassembled, but the ultra-high molecular weight polyethylene is mixed with the grease after the bearing sleeve is assembled and the rolling elements are evenly separated, and is filled into the bearing internal space, and then heated to form a hold. frame. In this cage, the grease is firmly held by the resin material, which is an ideal bearing product for the problems of the previous bearing life loss due to grease leakage and the contamination of the surrounding environment by the grease.
As an exclusive product developed by NTN, there are two forms of grease filling: one is a micro-oil supply type, and the grease contained in it is the minimum amount necessary for bearing lubrication; the other is a multi-supply type. The cage material (polyethylene and grease mixture) fills the internal space of the bearing. Whether it is a micro-supply type or a multi-supply type, it is common:
(1) Leakage of grease is extremely rare. Since grease is gradually released from the cage and supplied to the rotating surface as the bearing generates heat and centrifugal force increases, leakage of grease is extremely small. Compared with general grease lubrication methods, it can effectively prevent pollution to the surrounding environment.
(2) Excellent lubricity Even if severe vibration or large centrifugal force acts on the bearing, the grease is hard to leak, and the grease is not emulsified by the intrusion of moisture, so the lubricating property is superior to the general grease.
(3) The rotational torque of the bearing The bearing of the small micro-supply mode has almost no stirring resistance of the grease, and the rotational torque of the bearing is small.
(4) Sealing effect This kind of cage has a certain blocking effect on foreign intrusion objects (moisture, dust, etc.), but it is still insufficient as a sealing device, especially when the sealing performance is particularly high. Contact rubber seals (such as deep groove ball bearings, bearing units) or other sealing structures.
As an exclusive product developed by NTN, there are two forms of grease filling: one is a micro-oil supply type, and the grease contained in it is the minimum amount necessary for bearing lubrication; the other is a multi-supply type. The cage material (polyethylene and grease mixture) fills the internal space of the bearing. Whether it is a micro-supply type or a multi-supply type, it is common:
(1) Leakage of grease is extremely rare. Since grease is gradually released from the cage and supplied to the rotating surface as the bearing generates heat and centrifugal force increases, leakage of grease is extremely small. Compared with general grease lubrication methods, it can effectively prevent pollution to the surrounding environment.
(2) Excellent lubricity Even if severe vibration or large centrifugal force acts on the bearing, the grease is hard to leak, and the grease is not emulsified by the intrusion of moisture, so the lubricating property is superior to the general grease.
(3) The rotational torque of the bearing The bearing of the small micro-supply mode has almost no stirring resistance of the grease, and the rotational torque of the bearing is small.
(4) Sealing effect This kind of cage has a certain blocking effect on foreign intrusion objects (moisture, dust, etc.), but it is still insufficient as a sealing device, especially when the sealing performance is particularly high. Contact rubber seals (such as deep groove ball bearings, bearing units) or other sealing structures.
Jiangyin Yuanfang Machinery Manufacture Co., Ltd , https://www.yuanfangmachine.com