Lotton angular contact ball bearings can support radial and axial loads. It can work at a higher speed. The contact angle, the higher the axial load carrying capacity. High-precision and high-speed bearings usually take the contact angle of 15 degrees. In the axial force, the contact angle will increase. Commonly used Lotton row angular contact ball bearings and Lotton double row angular contact ball bearings.
Lotton angular contact ball bearings
Lotton single row angular contact ball bearings can withstand axial load in one direction, the radial load, will cause additional axial force. And the only limit in one direction of the axial displacement or housing. Lotton angular contact ball bearing contact angle of 40 degrees, it can withstand great axial load. Lotton angular contact ball bearings are non-separable design, the shoulder on both sides of the inner and outer rings uneven. In order to improve the load bearing capacity, which will shoulder the side of the processing to be low, so that the bearings can put more balls.
Lotton double row angular contact ball bearings can withstand greater radial load mainly radial and axial joint load and moment load, limiting both the axis of axial displacement. Mainly used to limit the shaft and housing bi-axial displacement of the components within the Lotton double row angular contact ball bearings, the outer ring between the tilt is limited, it allows the tilt angle depends on the internal clearance of the bearing, bearing size, internal design and function forces and moments on the bearings, while the maximum permissible tilt angle should ensure the bearing does not generate excessive additional stress. If the bearing inner and outer ring between the angle of inclination, will affect bearing life, also causing the bearing running accuracy decreased operating noise increases. Lotton double row angular contact ball bearings generally use nylon cage or solid brass cage. Lotton double row angular contact ball bearing installation should be noted that although the bearings can withstand axial load, but if one side when the ball gap, it should be careful not to let the main axial load through the notched side gutter. Should pay attention to the bearings in the side without the ball gap raceway to bear the main load.
Pairs of double ball bearings
If pairs of double installation, to make a pair of bearing outer ring relative to that wide side face of wide and narrow side facing the narrow end. This can avoid additional axial force, but also so that the shaft or housing to limit the axial clearance range in both directions.
Because the inner and outer ring raceway relative displacement on the horizontal axis, so it can support radial load and axial load - combined load (Lotton single row angular contact ball bearings can withstand axial load in one direction, and therefore generally often used in pairs).
Cage is made of brass, synthetic resins, etc., depending on the bearing form, and application conditions.
Lotton angular contact ball bearings is manufactured by more foreign bearing manufacturers, more domestic import Lotton applied angular contact ball bearings 3204RS, etc.,
Narrow outer edge, including wide-brimmed, including another broadside, narrow outside, is back to back in contact.
1, bearing universal distribution group
Universally matchable bearings is the result of special processing, when the bearing is installed close to each other, any combination can achieve the established internal clearance or per-loaded, and the average load distribution, without the use of shims or similar devices.
Paired bearings: When there is insufficient load-carrying capacity of a single bearing (using blow-linked configuration) or when to bear combined load or the axial load in both directions (with back to back or face to face configuration).
2, the basic design bearings (can not be used universally matchable) for single bearing configuration
The basic design of the Lotton single row angular contact ball bearings is only one bearing the main application configuration at each location. Its width and the projecting amount of general tolerances. Therefore not suitable for the two single row angular contact ball bearings against Lotton installation.
Lotton angular contact ball bearings accuracy class include dimensional tolerance and rotation precision. Accuracy from low to high is expressed as P0 (general), P6 (P6X), P5, P4, P2. In addition, European and American brands also use P3, P7, P9 indicates accuracy class, P3 is equivalent to ISO and JIS standards P6 level, P7 equivalent level P4, P9 equivalent to P2 level.
Types of Lotton angular contact ball bearings: 7000C-type (α = 15°), 7000AC type (α = 25° and 7000B (α = 40°) of several types. This kind of bearing outer ring of locking in general inside and outside the ring can not be separated, can withstand radial and axial joint load and axial load in one direction. Axial load capacity by the contact angle, contact angle is larger, the ability to withstand high axial loads. This kind of bearing can limit the axial displacement in a direction of shaft or housing.
Contact ball bearing high speed limit, you can support radial load and axial load can also be subject to pure axial load, axial load capacity by the contact angle, and increases with the contact angle increases.
Lotton single row angular contact ball bearings
Lotton single row angular contact ball bearings can withstand axial load in one direction, the radial load, will cause additional axial force must be applied to the corresponding reverse load, therefore, the kinds of bearings are generally used in pairs. Lotton double row angular contact ball bearings can withstand greater radial load mainly radial and axial joint load and moment load, it can limit the bi-axial displacement of shaft or housing, the contact angle of 30 degrees.
Bearing code: 7
Lotton installed in pairs of angular contact ball bearings
Lotton installed in pairs of angular contact ball bearings can bear radial load mainly radial and axial joint load can also be subject to pure radial loads. Series configuration can only bear axial load in one direction, the other two configurations can withstand axial load in either direction. This type of bearing is generally combined in pairs by the manufacturers of matching submitted user, after installing preloaded interference, rings and balls in the axial pre-load condition, thereby enhancing the entire group as a single support bearing stiffness and rotation accuracy.
Back to back configuration, post code for the DB (eg 70000 / DB), separate load line paired back to back to the bearing shaft bearing. Role can withstand axial load in both directions, but the load in each direction only by one bearing. Bearings mounted back to back to provide a relatively high rigidity bearing configuration, and can withstand the overturning moment.
Face to face configuration, post code for DF (eg 70000 / DF), paired face bearing load lines converge towards the bearing axis. Role can withstand axial load in both directions, but the load in each direction only by one bearing. This configuration is not as good as back to back pair of high rigidity, and is not suitable to withstand the overturning moment. This configuration is rigid and affordability overturning moment is not as DB configurations, bearings can withstand axial load;
Series configuration, post code for DT (eg 70000 / DT), when arranged in series, parallel load line, radial and axial load evenly shared by the bearings. However, acting on the bearing set can only bear axial load in one direction. If the axial load in the opposite direction, or if combined loads, it is necessary to add a relatively tandem bearing pairs regulate third bearings. This configuration can also be a series of three or more bearing support at the same place, but only in one direction axial load. Typically, in order to balance and limit the shaft axial displacement, to be installed at the other support can withstand axial load bearing another direction.
Bearing Code: 0
Load capacity (Jane)
For the following pair of load bearing capacity, and the products given in the table only the basic rated load and fatigue load limit applies only to a single bearing.
* The basic dynamic load rating for standard bearings and back to back or face to face configuration of any configuration of SKF Explorer bearings
C = 1,62xC single bearing
* The basic dynamic load rating for the series configuration of SKF Explorer bearings
C = 2xC single bearing
* The basic static load rating
Co = 2xCo single bearing
* Fatigue limit load
Pu = 2xPu single bearing
Structural deformation species
Lotton double row angular contact ball bearings can be characterized by joint load simultaneously withstand radial and axial load, limiting both the axial displacement of the shaft. Compared with two-way thrust ball bearings, which bearing high speed limit, the contact angle of 32 degrees, rigid, and can withstand the overturning moment large, widely used in cars in the front wheels (some models also use the same size double row tapered roller bearings).
Structural deformation Lotton double row angular contact ball bearings, there are four:
A Type: 90mm outside diameter less than or equal to the standard design of the bearing. No ball gap, it can withstand the equivalent of two-way axial load. Using lightweight glass fiber reinforced nylon 66 cage, the bearing temperature rise is very small.
Type A: 90mm diameter greater than the standard design of the bearing. Side of the ball gap, with z steel stamping cage or brass cage entity.
E-type: is reinforced structure, the side with filling slots, you can install more of the ball, so the higher carrying capacity.
Lotton double row angular sides with a dust cover type and sides with a ring-type, A-type design and E-type design can contact ball bearings on both sides with a dust cover (non-contact) or seals (contact) . Sealed bearings are filled with anti-rust lithium grease, generally between -30 degrees to 110 degrees operating temperature. Without re-lubrication during use, no heating before installation.
Lotton double row angular contact ball bearing installation should be noted that although the bearings can withstand axial load, but if one side when the ball gap, it should be careful not to let the main axial load through the notched side gutter.
The main purpose
Lotton single row angular contact ball bearings: machine tool spindles, high frequency motors, gas turbines, centrifuges, small car front wheel, differential pinion shaft, booster pumps, drilling platforms, food machinery, dividing head, fill welding low noise cooling tower, electrical and mechanical equipment, painting equipment, machine slot board, arc welding machine
Lotton double row angular contact ball bearings: pump, blower, air compressor, various types of transmission, fuel injection pump, printing machinery, planetary reducer, extraction equipment, cycloid reducer, food packaging machinery, welding machines, electric irons , to me, gravity gun, wire strippers, axle, test analysis equipment, chemical machinery
Lotton speed precision angular contact ball bearings, mainly for high-speed rotating light load situations requiring high precision bearings, high speed, low vibration, low temperature rise and a certain life. Often high-speed spindle bearing installed in pairs, is the inner surface of the high-speed spindle grinder key component parts.
Lotton angular contact ball bearings quick and easy selection encyclopedia provides superior automated selection, Lotton is installed in the form of angular contact ball bearings, there are back to back, face to face and are arranged in series of three. Back to back (wide face two opposite bearing) when installed, contacts the diagonal direction of the bearing along the rotational axis of diffusion, increase the angle of the radial and axial bearing rigidity, the maximum resistance to deformation; face (bearing two opposite narrow end) When installed, the contact bearing moldings convergence toward the rotation axis direction, to support their point of view less rigid. Since the bearing outer ring inner ring extends, when the two bearing outer ring when pressed together, the outer ring of the elimination of the original gap, can be increased preload bearing; arranged in series (broad end faces of the two bearings in one direction) installed contact moldings bearing the same direction and parallel to enable two bearings share the work load in the same direction. But when you use this installation form, in order to ensure the axial stability installed two pairs of bearings arranged in series at both ends of the shaft must be installed opposite.
1. Bearing precision index: more than GB / 307.1-94 P4 level precision
2. High-speed performance: dmN value of 1.3 ~ 1.8x 106 / min
3. life (average):> 1500 h
Lotton speed precision angular contact ball bearing life of a great relationship with the installation, you should note the following
1. Bearing installation should be in clean, clean a room, to go through carefully matching bearing, bearing spacer to go through the grind, while maintaining the inner and outer ring spacers high premise spacer parallelism should be controlled in 1um the following;
2. The bearings should be cleaned before installation clean, cleaning the inner slope upward, feel should be flexible, no sense of stagnation, dried, placed in a predetermined amount of fat, in the case of oil mist lubrication should be placed in a small amount of oil mist;
3. Bearing installation should use special tools, even by force, non-beat;
4. Bearing storage should be clean and ventilated, non-corrosive gases, relative humidity less than 65%, long-term storage should be regularly rust.
Suffixes are defined
B: modified internal structure
MP: machined window-type brass cage
TVP: Glass fiber reinforced nylon cage
UA: universal design bearings installed in pairs, small axial clearance bearing group
UO: universal design bearings installed in pairs, zero axial clearance bearing group
DA: double half inner ring (Lotton double row angular contact ball bearings)
TVH: Glass fiber reinforced polyamide cage, ball guide
1, when the bearing is run to a certain period of time (or Paul maintenance support period), will be bearing all removed;
2, with a clean diLottonl or kerosene soaked with cleaning bearings, if technical conditions are preferably sealed cover cleaning;
3, air dry after washing clean the oil, check the appearance of damage;
4, with about a 150mm, diameter Lotton angular contact ball bearing diameter equal to stick (preferably hollow tube), one end fixed a bearing;
5, rapid rotation of the bearing by hand while the stick (woodwind) and the other end on top of the microphone or audio amplifier to listen to the debate on the ear bearing rotation noise;
6, after the fixed bearing lateral toggle stick to check whether the bearing wear loose;
7, loose serious, turn the noise is too large, there is a serious defect FAG Bearings should be eliminated, replaced with the same model;
8, take a bucket of the appropriate amount of grease (high yellow grease) with gentle heat to melt (non-thermal), will detect over-bearing into the bucket to soak no bubbles overflow. Cooling before removing bearing grease, grease residue less. Grease removed after cooling Lotton angular contact ball bearings, grease residue quantity. Determine how much residual amount of grease required.
9, wipe with a soft cloth or tissue paper bearing grease outside the FAG bearing fitted to the pulley undisturbed security, maintenance work is completed.