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Submerged Bearing

Rubber bearing

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Rubber bearing

Rubber bearing is mainly used in axial flow pump and mixed-flow pump in water. It is quite capable for atomic power station and circulating water pump, washer pump, cooling water pump, seawater pump and draining pump of energy power station. On the other hand, due to the oil lubrication way got a high regard again, rubber bearing is still widely used in stern bearing, rudderpost bearing and main shaft bearing of dredge.

Main features
1、Less power loss
Generally, there is a few friction between moisten rubber and mental. The rubber developed by our company makes the friction less. The following is a comparison about friction factor.
The frictional pair                 friction factor
Rubber to metal (moisten)              0.001~0.005
Rubber to metal (dry)                      0.5
Cast iron to cast iron (less oil)              0.15
Cast iron to bronze (dry)                   0.22
Cast iron to lignum vitae (less oil)          0.19
Wrought iron to lignum vitae (less oil)      0.08
Roller bearing                            0.014
Ball bearing                              0.001
2、Less friction
Rubber bearing’s abrasion-resisting quality is better than lignum vitae (wooden blocks and wooden bearings’ materials), The lignum vitae has to be replaced in a few months use, as a rubber bearings can last more than 4 years.
3、Less harm on shaft and shaft sleeve
Even if there is sand or small stone put into shaft and rubber bearing, it can be ruled out following the rotation of bearings for its lubricant water. In order to fully understand its feature, our company made a special study on the rubber.
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Because the friction is rather small between rubber bearing and shaft, the rubber’s anti-phone and shock absorption effect is clearly.
5、No public pollution
For the lubrication materials is water instead of oil, public pollution will not happen.
6、Taglia di produzione
The maximum diameter is 850 millimeters. If you want specifications and specific design information of product, please contact with us.


Submerged Bearing

KUNITOMI INDUSTRY CO., LTD.

410-0875
10-10 Imazawa Numatsu
Shizuoka-Ken Japan

TEL 0081-55-968-6322
FAX 0081-55-968-6325
E-mail:kunitomi@ktt-tec.co.jp