- Hello Customer - Log in or Register!
(1) method for SKF bearings with chemical additives added some chemical additives in the lubricant, can reduce the bearing noise, such as a factory of Tianjin produced a noise reduction additive for low noise grease, bearings can be reduced on the basis of the noise from the original 3.9~9. 2dB, suitable for use in miniature and small bearings.
(2) using sucking vibration or across vibration device using sucking vibration or across vibration device to reduced SKF bearing of noise or isolation bearing noise, can are good effect, but such often in economic Shang paid is large cost, sometimes makes body variable large, thermal conditions variable poor, or easy rust, using times full be consider, only in other measures take yihou still cannot reached low noise of indicators yihou only using this law. Instead of the simplest example is the high speed thrust bearings: the thrust of radial ball bearings, can be their bait to absorbing plastic jackets full of anti-rust lubricant, thrust bearings with a hood or general thrust bearing under the permission of which restricts the hole or outer circle set with the same plastic sleeves, but control is not available when rotating friction or interfere with the adjacent parts. This approach has a certain noise effects. Another example is in the middle between the bearing and the housing bore to add a set of, attenuating vibration of a rotating system on to the housing force, but this requires proper provisioning, or else they might have the opposite effect.
Yet another example is the use of sound-absorbing noise bearing system-acoustic enclosure will occur entirely sealed or closed up as much as possible. This interior noise reduction enclosures is a glass fiber or polyurethane foam, inner surface 0.6-LMM thickness of steel plate, uniform φ 1.2-1.5mm small holes on the surface, covering the entire inner surface of the small hole 25%~30%, outer surface 2mm thickness of steel plate. Fiberglass or foam used to remove high frequency noise, inner surface with small holes to eliminate low frequency noise, but the surface of the plates is rumored to isolate noise.
(3) change the way host site speed noise load for SKF bearings are not very sensitive, but is sensitive to speed, in cases where conditions allow, reducing speed and increasing torque method to achieve the same purpose, but it reduces the noise. [Cases] for reduced pump system of noise, will original with in motor speed for 1430r/min Xia flow for 10L/min of pump, to speed for 710r/min motor and distribution to more large specifications of pump and are also of flow Hou, pump itself, and pump bearing and pump motor bearing of noise are significantly to reduced has, but package body by accounted for space has expanded, cost also has increased.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7918A5DF NSK | 90 | 125 | 18 |
| 7317BDF NSK | 85 | 180 | 41 |