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Characteristics of LYC universal joint bearings
Source: China Bearing Network Time: 2013-11-10
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Universal joint bearings are mainly used on heavy machinery universal joint shafts such as automobiles, rolling mills, lifting and transporting machinery, etc.; and various types of universal joints in other machinery industries. The ferrules of such bearings are specially heat treated; Accept a large impact load; the cross-section of the universal joint bearing itself and the space occupied. The servant's tip is about the kind of envy.
The universal joint bearing directly operates the shaft outer surface as a raceway; therefore, the hardness and dimensional accuracy of the shaft surface with the demand should be matched to the corresponding skill requirements of the bearing raceway.
LYC is also able to supply customers with other types of needle roller bearings or long cylindrical roller bearings; such as drawn cup needle roller (or long cylindrical roller) bearings.
LYC is also able to create new needle roller bearings or long cylindrical roller bearing type products that meet the customer's individual needs.
The cage LYC needle bearing cage is mostly steel stamping wave cage; there are also car (steel, bakelite or brass) solid cage; and glass fiber reinforced nylon 66 and other engineering plastic cage.
Minimum load in order to ensure the bearing to achieve outstanding working conditions; needle bearings are the same as other ball bearings and roller bearings; it is necessary to apply a certain amount of minimum load; especially for high speed, high acceleration; or there are frequent changes in the load direction The following operations; due to these conditions; the inertia of the roll and cage and the conflict in the lubricant will have an adverse effect on the rolling and rotation accuracy of the bearing; there may be damage to the bearing between the ball and the raceway. Sliding movement.
The minimum load Fmin required for deep groove ball bearings can be budgeted using the following formula:
Fmin = 0. 02C
In the formula. Cat D has extra dynamic load; N
Scale, public service, clearance LYC specification needle roller bearing shape scale fits GB/T273. 3 "Rolling bearing radial bearing shape scale master plan", GB/T 290 "rolling bearing stamping outer ring needle bearing shape scale", JB/T 7918 "Rolling bearing radial needle roller and cage assembly", JB/T 3588 "Rolling bearing full complement needle roller bearing dimensions and public service", JB/T 3370 "Rolling bearing universal joint cylindrical roller bearing" Rules such as 》.
LYC specification needle roller bearing public service fit GB/T307. 1 "rolling bearing radial bearing public service"
And the rules of the associated public service code.
The clearance of LYC needle roller bearings; the inner and outer ring fits the rules of GB/T4604 "Rolling bearing radial clearance". No internal or external ring or as long as a ferrule clearance depends on the diameter of the common journal.
The scale of the LYC specification needle roller bearing is usually made according to the P0 level (general level) and the clearance according to the 0 group (the basic group). If the customer has other special conditions (including non-standard) for the scale, public service and clearance; LYC can supply the corresponding product.
Equivalent dynamic (static) load Because such bearings only accept radial load; therefore, the equivalent dynamic load of the bearing is the same as the equivalent static load; its equivalent dynamic (static) load can be calculated as follows:
P = P0 = Fr
Where D. Equivalent dynamic load; N
.0 D equivalent static load; N
Fr D radial load; N
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