CYLINDRICAL ROLLER BEARINGS
May 15th, 2008 | by admin |☆ creation characteristics
Roller Raceway with a distinction contact, symmetric alluviation capacity, applies both to bear onerous loads and effect load, but also to high-speed rotation.
Cylindrical roller bearings Raceway and actuation geometry of the reinforced design, has a broad carrying capacity, ribs and roller modify of the newborn scheme design, not exclusive meliorate the bearing power of the stem and meliorate the end-roller Ribs contacts with the region’s lubrication and meliorate the action of the bearings.
Bearing much mainly utilised for job and large-scale motors, generators, interior oxidization engines, pedal turbines, organisation agency spindle, swiftness devices, Handling machinery, all types of industrialized machinery.
★ Product Categories
ZWZ creation of rounded roller bearings crapper be distributed into the mass types:
1. Separate rounded roller bearings
2. Double bed rounded roller bearings
3. Four rounded roller bearings
Single bed rounded roller bearings
NU-, N-type:
NU outmost ring of the threefold ribs, the outmost ring, roller and the detain with the intrinsic ring separation. N-type intrinsic ring threefold ribs, the intrinsic ring, and the roller detain and the outmost ring crapper be separated.
NU-and N-axis qualifying to earmark Shell to do in a destined arrange of stem movement, healthy to alter cod to energy treatment or the artefact of errors arising from the dig and the qualifying orientating of the bomb changes, the most fit for free-bearing. Can not bounds the dig and bomb stem displacement, crapper exclusive bear symmetric load.
NJ-and NF-type:
NJ-outer ring threefold Ribs, Ribs intrinsic ring is single. NF-inner ring threefold Ribs, Ribs outmost ring are single.
NJ-and NF-affordable to whatever extent the one-way stem loading.
NUP type, NH type:
NUP outmost ring with double-Ribs, Ribs and intrinsic ring with a single-Dang Quan, NH outmost ring with double-Ribs, Ribs and intrinsic ring with a azygos act with Dang Quan, crapper be installed intrinsic ring and outmost ring (With a flooded ordered of rollers and Cage), the bomb of the dig and the digit directions of stem move restrictions in the stem bearing clearance limits, with the omission of symmetric alluviation to bear, crapper resist a diminutive turn of two-way stem alluviation . Therefore fit for a fixed-bearing
NCL… V-type:
Ribs outmost ring but no double-locked with a travel of the Cage rounded roller bearings.
Bearing not the category of cage, the more the sort of roller, with the aforementioned filler as the another rounded roller bearings crapper resist relatively super symmetric load, but the modify pace limit. Bearing the category of intrinsic ring and outmost ring crapper not be separated, were not installed, limits the axis of the bomb or the digit directions of stem move in the stem bearing clearance limits.
NB type:
Ribs without the rounded roller bearings.
Bearing both exclusive and right the lot of no ribs, a stuff mess outmost ring, the intrinsic ring and outmost ring with a flooded ordered of roller and the detain threesome crapper be installed, crapper not bounds or bomb bearing the stem displacement, crapper not give axis To the load.
NJ… V -
Inner Ring a azygos bone detain without the rounded roller bearings
Because this identify of bearing no cage, the more the sort of roller, the aforementioned appearance and filler of the another rounded roller bearings are large than the symmetric alluviation capacity, but a modify pace limit, not to bounds the stem dig or bomb Displacement, crapper not give stem loading.
- NCF… V
The outmost ring without a azygos bone detain to the hunch brief rounded roller bearings
Bearing not reassert the category of planes, unexploded with rollers, with the aforementioned filler as the rounded roller bearings another than to be confident of greater symmetric load, but the modify pace limit.
Bearing the category of bomb or limits the axis of the digit directions of stem move in the stem bearing clearance limits.
… N-type (with exclusive impulsive bearing shafts)
Part of a removed rounded roller bearings with exclusive the outmost ring immobile slot, code-named after the bag with “N” said. Central module exclusive ingest impulsive bearings in housings for the Axial positioning, bearing in the bomb mess to simplify the stem retention, bomb holes crapper be prefabricated finished holes, thereby reaction the filler of the stem components.
Double bed rounded roller bearings:
NN type:
Ribs with intrinsic ring, the outmost ring without shelter. Can be installed within the outmost ring and components, not to bounds or bomb axis of stem displacement, crapper not give stem loading, and symmetric the aforementioned filler as the azygos rounded roller bearings, crapper resist the large symmetric load.
Compact and inferior impairment low load, specially practical to the organisation arbor bearing.
NN… K-type:
NN-type scheme and the same, exclusive for the cone-shaped mess in the bearings, bearings for micro-adjustment of the symmetric clearance, and Zhuangchai convenience. Multi-spindle organisation tools utilised by the types of bearings, module be installed in its strobile axis, the intrinsic ring finished the push of adjusting to the symmetric clearance.
NNU type, NNU… K-type:
Outer Ring with Ribs, Ribs no intrinsic ring. A rounded hole, digit holes Cone. Not to bounds or bomb axis of stem displacement, crapper not give stem loading, and symmetric the aforementioned filler as the azygos rounded roller bearings, crapper resist the large symmetric load.
NNCF type:
Inner Ring with threesome ribs, the outmost ring with a rib, a direction for the Axial positioning. Ribs another lateral of the outmost ring with a immobile ring, so that the bearings to reassert one.
NNCL type:
Inner Ring with threesome Ribs, Ribs no outmost ring, with a routine on both sides of a ring-bearing non-separation.
NNCS type:
Inner Ring with threesome Ribs, Ribs no outmost ring, the outmost ring in the region with a hair in the ring, a non-separation-bearing. Allow axis and bearing a destined stem displacement, crapper be utilised as a free-bearing.
Four rounded roller bearings
Four rounded roller bearings crapper be large symmetric alluviation and effect loading, processing of broad accuracy, practical to high-speed.
In the intrinsic ring module be push to roll Inner Raceway road opencast and the roller-lapping at the aforementioned time, module support meliorate actuation accuracy, and the artefact of bearing clearance be liberated to adjust.
Most utilised cold, hot-rolled machine, a lodge and another machines impact roll or roller bearing, but crapper also be utilised for another occasions.
FC: threefold outmost ring, the azygos intrinsic ring, the intrinsic ring without Ribs
FCD: threefold outmost ring, threefold intrinsic ring, the intrinsic ring without Ribs
FCDP: threefold outmost ring, the outmost ring but exclusive in the ribs with Dang Quan-ping, both intrinsic ring, the intrinsic ring without Ribs
Size range, 2000
ZWZ rounded roller bearings the filler of the base accumulation are traded in filler in the table,
Size arrange diameter: 25 mm ~ 1900mm
Size arrange diameter: 52 mm ~ 2300mm
Size arrange width: 13 mm ~ 400 mm
● Tolerance
ZWZ creation P4-tolerance mass azygos and double, quaternary rounded roller bearings, also produced a primary organisation arbor temperament levels SP, UP-class threefold bed rounded roller bearings.
◇ Radial Clearance
ZWZ azygos bed of rounded roller bearings hit a base accepted products assemble symmetric clearance, could also wage C3, C4 assemble clearance.
ZWZ threefold bed rounded roller bearings with accepted products assemble C1 clearance, rounded holes also wage C2, C3 Group Clearance, cone-bearing C2 Group also provides clearance.
ZWZ quaternary rounded roller bearings with accepted products assemble C3 clearance, but module also wage another products Clearance groups.
Clearance of the accepted form, wager the preamble. Radial Clearance greater than or inferior than the accepted continuance of the bearings may, low individual requirements for production.
◆ Cage
Single bed rounded roller bearings ingest of automobile grouping entities Cage, stamping Cage, nylon-and so. Double bed rounded roller bearings ingest of car-brass cage, and sometimes crapper wage material cage.
Four rounded roller bearings utilised mainly car-brass cage, to the large filler automobile grouping entities should take the pillars of Cage.
Cage cipher signs are as follows:
1. Stamping-use, the bearer of the place signs code-named J, if a difference of assorted stamping frame, followed by J, J1, J2 … that
2. Groove-use, Cage place signs code-named CJ;
3. Brass entities by Cage, Cage place signs code-named M;
4. When bearing diam D> 400mm, the ingest of poise entities Cage, Cage did not clew the cipher after the home, but for interior and outside guidance, should be serviceable at the aforementioned instance signs of the aforementioned post-code and pass the artefact ( The pass for the A, the pass for B).
Double bed rounded roller bearings utilised monument entities Cage did not sign.
□ equal impulsive load
When exclusive bear symmetric load,
P = Fr
■ equal noise load
P0r = Fr
Cylindrical roller bearings are the intrinsic ring and outmost ring with ribs or Dang Quan, the symmetric alluviation to bear at the aforementioned instance crapper resist a destined honor of stem load. At that moment, the stem alluviation power depends on the roller end, the carrying power of ribs, lubrication and speed, and so on.