- Deep groove ball bearings
- Cylindrical roller bearings
- Aligning ball bearings
- Stainless steel bearings
- LNSERTED bearings
- Ball introduced
- Plain Bearings
- Needle Roller Bearings
- Angular contact ball bearings
- Thrust Roller Bearings
- Spherical roller bearings
- Thrust Ball Bearings
- Rolling mill bearings
- Tapered Roller Bearings
- Plastic bearings
- Linear motion bearings
Cylindrical roller bearings
Cylindrical roller and raceway line contact bearings. Load capacity, the main radial load. Rolling friction ring ribs and small , suitable for high-speed rotation . According ring without ribs , can be divided NU, NJ, NUP, N, NF and other single row bearings , and NNU, NN and other double row bearings. The bearing is the inner, outer separable structure . Inner or outer wall of the cylindrical roller bearings, the inner and outer ring can be moved relative to the axial direction , so it can be used as free- end bearings. In the inner and outer side of a double wall , the other side of the ring has a single wall of the cylindrical roller bearings, can withstand a certain degree of axial load direction . General use of steel stamping cage , or copper alloy machined cage . But there are also a part of the use of polyamide forming cage .
Cylindrical roller bearings features:
1 roller and raceway contact or repair offline contacts, radial load capacity , suitable to withstand heavy load and shock load.
2 . Friction coefficient is small, suitable for high speed , the speed limit near the deep groove ball bearings.
3. N type and NU type can move axially , to accommodate changes due to thermal expansion of the shaft and the housing or mounting error due to the relative position , the free end of the support can be used .
4 or higher on the shaft bore machining requirements, the outer ring of the bearing mounting axis relative deflection should be strictly controlled to avoid contact stress concentration.
5 inner or outer ring detachable, easy installation and removal.
Type of construction:
1 . No outer wall and inner wall N0000 type cylindrical roller bearings NU0000 such large radial load bearing acceptable , high speed limit , not bound by the axial displacement of shaft or housing , can not accept axial load .
2 . Cylindrical inner and outer wall with roller bearings NJ0000 type , NF0000 bearing axial displacement can be bound shaft or housing in one direction , and can accept a smaller axial load . NU0000 + HJ0000 type , NJ0000 + HJ0000 type , NUP0000 bearings , axial displacement can be bound or two in the axial direction of the housing gap in the field of bearings . And accept a smaller two-way axial load.
Cylindrical roller bearings category
Cylindrical roller bearings are separable bearings, installation and removal is very convenient. Cylindrical roller bearings can withstand higher radial loads and applies to the use of lead in high speed applications.
Such bearings allow the axis of the inner and outer axes angle error ( tilt ) is small, only 2 'to 4' . Therefore, the shaft and housing is relatively high machining accuracy Otherwise , prone to uneven parts in contact with the raceway load or stress concentration. But after contacting roller or raceway bus correction can reduce the occurrence of stress concentration .
Cylindrical roller bearings fitted out in accordance with the number of different rolling elements can be divided into single row, double row and multi- row cylindrical roller bearings with different structures and so on. Different structures bearing position is also reflected in the design of wall . One commonly used cylindrical roller bearings have the following forms:
Single row cylindrical roller bearings: Single row cylindrical roller bearings are separable bearings, easy installation and removal , the two rings can be a tight fit , the line of contact between the rollers and raceways correction can reduce stress concentration.
Double row cylindrical roller bearings: double row cylindrical roller bearings are swimming bearings, the separability makes installation and removal is easy. Two rings can be a tight fit . Double row cylindrical roller bearings almost not allowed tilt angle .
Single row cylindrical roller bearings
N, NU type
N -type bearing outer wall , the inner ring has a wall on both sides . Can allow relative displacement in the shaft axial direction between the two bearings. Bearings on both sides of the outer ring NU type , no inner wall . Allows the shaft to be relatively displaced in the axial direction between the two bearings. Therefore, such a structure is suitable for use as the mobile end bearing .
NJ, NF type
Both sides of the bearing outer ring NJ There wall, inner side wall there . Can withstand a certain amount of axial load . NF type of outer side wall there , on both sides of the inner ring has a wall . It can withstand a certain amount of axial load . Therefore, such a structure is suitable for locating the axial direction as a single bearing .
NUP, NFP type
NUP type of bearing is on both sides of outer ring , the inner side of the band ( fixed ) single-wall , while the other side is detachable flat ring . Can withstand a certain amount of axial load .
NFP type of bearing outer side of the band ( fixed ) single-wall , while the other side is detachable flat ring, both sides of the inner ring wall . Also can withstand a certain amount of axial load . This class can limit bearing structure with respect to the shaft bearing axial displacement in both directions . Accordingly , suitable for use as a fixed end bearings .
NH (NJ + HJ) type
NH NJ bearing structural bearings and HJ thrust collar of the combined type . Because the inner bearing NUP shorter and flat ring is not fixed, inconvenient , and can NH NJ bearing inner ring of the bearing width , maintaining a closer fit with the shaft . And bearing in NH installation and removal easier .
NH bearings can limit displacement of the shaft relative to the housing in both axial directions . Accordingly , suitable for use as a fixed end bearings .
Double row cylindrical roller bearings
Double row cylindrical roller bearings have two structures cylindrical bore and tapered bore ( bearing post code plus K). This kind of bearing has a compact, rigid, large carrying capacity, deformation , etc. after by load, especially for machine tool spindle bearing . Conical bore can also play the role of micro- adjustment clearance and positioning device can be simplified structure, easy installation and removal . Usual double row cylindrical roller bearings under the following forms:
NN, NNU type
NN bearing outer ring without ribs on both sides of the inner wall of the middle of the wall there . Allows the shaft axially relative to the bearing generated between the two displacement directions .
NNU bearings on both sides of the outer wall of the middle of the wall there , no inner wall . Allows the shaft axially relative to the bearing generated between the two displacement directions . Thus, such structure is suitable for swimming -end bearing . This type of bearing retainer multi-use vehicles solid cage.
NNF type
NNF bearings are double row full complement cylindrical roller bearings, the outer wall of a band , there are two types of double-wall structure of the inner ring . Roller guided by the inner ring wall , fastening the two inner rings together. In addition to the structure can withstand large radial and axial load , but also can withstand the overturning moment , therefore , is often used as a fixed end bearings.
NNF type bearings with contact seals on both sides . The bearing is filled with grease, grease operating temperature of -50 ℃ to +110 ℃, but due to the sealing material by the bearing operating temperature is limited to between -40 ℃ to +80 ℃. In the case of the use of better working conditions , NNF bearings with sealed without the need for maintenance , if bearing a long period of moisture or pollution of the environment , and is in high-speed operation , through the lubrication groove and lubrication holes in the outer ring of the bearing relubrication .
Four cylindrical roller bearings
Four-row cylindrical roller bearings are mainly used for cold , the hot rolling mill , rolling mill machine cogging machinery , bearings for the separation of structure, bearing rings and rolling components can be easily separated , so the bearing cleaning , inspection or installation disassembly are very convenient.
FC type
FC bearing outer ring and an inner ring consists of two integral , both sides of each outer wall has a wall in the middle , inner wall .
FCD type
FCD type bearing is actually a combination of two NN bearings made .
FC -and FCD type bearings allow the shaft between the bearing relative axial displacement in both directions generated . Thus, such structure is suitable for swimming -end bearing . This type of bearing retainer multi-use vehicles entity 13:58 .
Main purpose :
Medium-sized motors, locomotives, machine tool spindle , internal combustion engines , generators, gas turbines , gear boxes, rolling mill , vibrating screen and lifting and transport machinery.
Cylindrical roller and raceway line contact bearings. Load capacity, the main radial load. Rolling friction ring ribs and small , suitable for high-speed rotation . According ring without ribs , can be divided NU, NJ, NUP, N, NF and other single row bearings , and NNU, NN and other double row bearings. The bearing is the inner, outer separable structure . Inner or outer wall of the cylindrical roller bearings, the inner and outer ring can be moved relative to the axial direction , so it can be used as free- end bearings. In the inner and outer side of a double wall , the other side of the ring has a single wall of the cylindrical roller bearings, can withstand a certain degree of axial load direction . General use of steel stamping cage , or copper alloy machined cage . But there are also a part of the use of polyamide forming cage .
Cylindrical roller bearings features:
1 roller and raceway contact or repair offline contacts, radial load capacity , suitable to withstand heavy load and shock load.
2 . Friction coefficient is small, suitable for high speed , the speed limit near the deep groove ball bearings.
3. N type and NU type can move axially , to accommodate changes due to thermal expansion of the shaft and the housing or mounting error due to the relative position , the free end of the support can be used .
4 or higher on the shaft bore machining requirements, the outer ring of the bearing mounting axis relative deflection should be strictly controlled to avoid contact stress concentration.
5 inner or outer ring detachable, easy installation and removal.
Type of construction:
1 . No outer wall and inner wall N0000 type cylindrical roller bearings NU0000 such large radial load bearing acceptable , high speed limit , not bound by the axial displacement of shaft or housing , can not accept axial load .
2 . Cylindrical inner and outer wall with roller bearings NJ0000 type , NF0000 bearing axial displacement can be bound shaft or housing in one direction , and can accept a smaller axial load . NU0000 + HJ0000 type , NJ0000 + HJ0000 type , NUP0000 bearings , axial displacement can be bound or two in the axial direction of the housing gap in the field of bearings . And accept a smaller two-way axial load.
Cylindrical roller bearings category
Cylindrical roller bearings are separable bearings, installation and removal is very convenient. Cylindrical roller bearings can withstand higher radial loads and applies to the use of lead in high speed applications.
Such bearings allow the axis of the inner and outer axes angle error ( tilt ) is small, only 2 'to 4' . Therefore, the shaft and housing is relatively high machining accuracy Otherwise , prone to uneven parts in contact with the raceway load or stress concentration. But after contacting roller or raceway bus correction can reduce the occurrence of stress concentration .
Cylindrical roller bearings fitted out in accordance with the number of different rolling elements can be divided into single row, double row and multi- row cylindrical roller bearings with different structures and so on. Different structures bearing position is also reflected in the design of wall . One commonly used cylindrical roller bearings have the following forms:
Single row cylindrical roller bearings: Single row cylindrical roller bearings are separable bearings, easy installation and removal , the two rings can be a tight fit , the line of contact between the rollers and raceways correction can reduce stress concentration.
Double row cylindrical roller bearings: double row cylindrical roller bearings are swimming bearings, the separability makes installation and removal is easy. Two rings can be a tight fit . Double row cylindrical roller bearings almost not allowed tilt angle .
Single row cylindrical roller bearings
N, NU type
N -type bearing outer wall , the inner ring has a wall on both sides . Can allow relative displacement in the shaft axial direction between the two bearings. Bearings on both sides of the outer ring NU type , no inner wall . Allows the shaft to be relatively displaced in the axial direction between the two bearings. Therefore, such a structure is suitable for use as the mobile end bearing .
NJ, NF type
Both sides of the bearing outer ring NJ There wall, inner side wall there . Can withstand a certain amount of axial load . NF type of outer side wall there , on both sides of the inner ring has a wall . It can withstand a certain amount of axial load . Therefore, such a structure is suitable for locating the axial direction as a single bearing .
NUP, NFP type
NUP type of bearing is on both sides of outer ring , the inner side of the band ( fixed ) single-wall , while the other side is detachable flat ring . Can withstand a certain amount of axial load .
NFP type of bearing outer side of the band ( fixed ) single-wall , while the other side is detachable flat ring, both sides of the inner ring wall . Also can withstand a certain amount of axial load . This class can limit bearing structure with respect to the shaft bearing axial displacement in both directions . Accordingly , suitable for use as a fixed end bearings .
NH (NJ + HJ) type
NH NJ bearing structural bearings and HJ thrust collar of the combined type . Because the inner bearing NUP shorter and flat ring is not fixed, inconvenient , and can NH NJ bearing inner ring of the bearing width , maintaining a closer fit with the shaft . And bearing in NH installation and removal easier .
NH bearings can limit displacement of the shaft relative to the housing in both axial directions . Accordingly , suitable for use as a fixed end bearings .
Double row cylindrical roller bearings
Double row cylindrical roller bearings have two structures cylindrical bore and tapered bore ( bearing post code plus K). This kind of bearing has a compact, rigid, large carrying capacity, deformation , etc. after by load, especially for machine tool spindle bearing . Conical bore can also play the role of micro- adjustment clearance and positioning device can be simplified structure, easy installation and removal . Usual double row cylindrical roller bearings under the following forms:
NN, NNU type
NN bearing outer ring without ribs on both sides of the inner wall of the middle of the wall there . Allows the shaft axially relative to the bearing generated between the two displacement directions .
NNU bearings on both sides of the outer wall of the middle of the wall there , no inner wall . Allows the shaft axially relative to the bearing generated between the two displacement directions . Thus, such structure is suitable for swimming -end bearing . This type of bearing retainer multi-use vehicles solid cage.
NNF type
NNF bearings are double row full complement cylindrical roller bearings, the outer wall of a band , there are two types of double-wall structure of the inner ring . Roller guided by the inner ring wall , fastening the two inner rings together. In addition to the structure can withstand large radial and axial load , but also can withstand the overturning moment , therefore , is often used as a fixed end bearings.
NNF type bearings with contact seals on both sides . The bearing is filled with grease, grease operating temperature of -50 ℃ to +110 ℃, but due to the sealing material by the bearing operating temperature is limited to between -40 ℃ to +80 ℃. In the case of the use of better working conditions , NNF bearings with sealed without the need for maintenance , if bearing a long period of moisture or pollution of the environment , and is in high-speed operation , through the lubrication groove and lubrication holes in the outer ring of the bearing relubrication .
Four cylindrical roller bearings
Four-row cylindrical roller bearings are mainly used for cold , the hot rolling mill , rolling mill machine cogging machinery , bearings for the separation of structure, bearing rings and rolling components can be easily separated , so the bearing cleaning , inspection or installation disassembly are very convenient.
FC type
FC bearing outer ring and an inner ring consists of two integral , both sides of each outer wall has a wall in the middle , inner wall .
FCD type
FCD type bearing is actually a combination of two NN bearings made .
FC -and FCD type bearings allow the shaft between the bearing relative axial displacement in both directions generated . Thus, such structure is suitable for swimming -end bearing . This type of bearing retainer multi-use vehicles entity 13:58 .
Main purpose :
Medium-sized motors, locomotives, machine tool spindle , internal combustion engines , generators, gas turbines , gear boxes, rolling mill , vibrating screen and lifting and transport machinery.