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NU2212 Ratchet Wheel Sprag Clutch Bearing For Wood Chipper

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NU2212 Ratchet Wheel Sprag Clutch Bearing For Wood Chipper

Country/Region china
Categories Forestry Machinery
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Product Details

NU2212 Cylindrical Roller Bearing Types

 

Product Description
 
* Cylindrical Roller Bearings are bearing in which cylinders are used as the rolling elements as opposed to balls in ball bearings. As such, the rollers have a greater (linear) contact area with the outer ring and are distribute loads across a broader surface. Subsequently, they have a relatively high radial load capacity and are suitable for high speeds. Double-row cylindrical roller bearings have high radial rigidity and are used primarily for precision machine tools.
* Depending on the series as defined below a number of cylindrical roller bearings have no ribs on either the inner or outer
ring, so the rings can move axially relative to each other which can be used as free-end bearings.
* Pressed steel (with or without tins or fins) or machined brass cages are generally used, but sometimes molded polyamide cages are also available depending on the application. Cylindrical Roller Bearings are also available without cages with a full complement of rollers. This allows even higher loads but at the expense of speed.
* Single row cylindrical roller bearings are also manufactured with snap ring grooves on the outer rings. This design simplifies the bearing joint as the bearings are located into the housing by means of the snap rings. The snap ring groove and snap rings are in accordance with IS0 464.
* There are different types designated NU, NJ, NUP, N, NF for single-row bearings, and NNU, NN for double-row bearings depending on the design or absence of side ribs.
N Series - Bearings of N design are single row cylindrical roller bearing and have two fixed ribs on the inner ring that retain
the rollers and cage and one smooth outer ring. This design allows an axial displacement in certain limits, of the shaft in
relation to the housing. Therefore, N Series rolling bearings are used in non-locating bearing units. Also, the N Series bearings
have virtually no thrust capacity.

NU Series - Are single row cylindrical roller bearings and have two fixed ribs on the outer ring and one smooth inner ring. This
design allows an axial displacement in certain limits, of the shaft in relation to the housing. Therefore, NU Series rolling
bearings are used in non-locating bearing units. Also, the NU Series bearings have no virtually thrust capacity.

NJ Series- Are single row cylindrical roller bearings and have two fixed ribs on the outer ring and a fixed rib on the inner ring
which can guide the shaft in a single direction (axially).

NUP Series - Are single row cylindrical roller bearings and have two fixed ribs on the outer ring and, on the inner ring, a fixed
rib and a support washer. This way they can be used as locating bearings, guiding the shaft axially in both directions.

RNU Series- Are single row cylindrical roller bearings and have two fixed ribs on the outer ring and has no inner ring. Instead,
it uses the shaft as the opposing raceway.
 
NF Series - Also able to carry incidental thrust loads, this bearing type features two integral ribs on the inner ring and a
single rib on the outer ring.

NN Series - Bearings of NN design are double row cylindrical roller bearing and have three fixed ribs on the inner ring that
retain the rollers and cage and one smooth outer ring. This design allows an axial displacement in certain limits, of the shaft in
relation to the housing. Therefore, N Series rolling bearings are used in non-locating bearing units. Also, the NN Series bearings
have no virtually thrust capacity.

NNU Series - Are double row cylindrical roller bearings and have three fixed ribs on the outer ring and one smooth inner ring.
This design allows an axial displacement in certain limits, of the shaft in relation to the housing. Therefore, NU Series rolling
bearings are used in non-locating bearing units. Also, the NNU Series bearings have no virtually thrust capacity
 
Bearing No.
Dimensions(mm)
Bearing No.
Dimensions(mm)
 
d
D
B
 
d
D
B
NU2205
25
52
18
NU2305
25
62
24
NU2206
30
62
20
NU2306
30
72
27
NU2207
35
72
23
NU2307
35
80
31
NU2208
40
80
23
NU2308
40
90
33
NU2209
45
85
23
NU2309
45
100
36
NU2210
50
90
23
NU2310
50
110
40
NU2211
55
100
25
NU2311
55
120
43
NU2212
60
110
28
NU2312
60
130
46
NU2213
65
120
31
NU2313
65
140
48
NU2214
70
125
31
NU2314
70
150
51
NU2215
75
130
31
NU2315
75
160
55
NU2216
80
140
33
NU2316
80
170
58
NU2217
85
150
36
NU2317
85
180
60
NU2218
90
160
40
NU2318
90
190
64
NU2219
95
170
43
NU2319
95
200
67
NU2220
100
180
46
NU2320
100
215
73

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


 

 

 

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