Cylindrical roller bearings support only radial loads, but have the advantage of a larger radial load capacity than ACBBs. Double row cylindrical roller bearings (NN and NNU types) and single row cylindrical roller bearings (N type) are available. In general, double row cylindrical roller bearings are used for high rigidity applications such as lathes, while single row cylindrical roller bearings are used in high-speed applications such as machining centers. The following graphs display the effect of internal radial clearance on the performance of cylindrical roller bearings.
Boundary Dimensions
|
NN: Inner ring rib type |
|
Bearing Type |
| d |
75 |
mm |
Bore diameter |
| D |
115 |
mm |
Outside diameter |
| B |
30 |
mm |
Width |
| r(min.) |
1.1 |
mm |
Chamfer Dimension |
Basic Load Ratings
| Cr |
111 |
kN |
Basic Dynamic Load Rating |
| C0r |
149 |
kN |
Basic Static Load Rating |
Speeds
| Grease |
7900 |
min-1 |
Limiting Speed |
| Oil (Oil-air) |
9500 |
min-1 |
Limiting Speed |
Dimensions
| Ew |
105 |
mm |
Roller Circumscribed Circle Diameters |
| s |
1.2 |
mm |
Axial Displacement |
Abutment and Fillet Dimensions
| da(min.) |
81.5 |
mm |
Diameter of Shaft Abutment |
| d1a(min.) |
82 |
mm |
Diameter of Shaft Abutment |
| Da(min.) |
107 |
mm |
Diameter of Housing Abutment |
| Da(max.) |
108.5 |
mm |
Diameter of Housing Abutment |
| ra(max.) |
1 |
mm |
Radius of Shaft or Housing Fillet |
Additional information
| CC1(max.) |
25 |
μm |
Clearance in Bearings with Cylindrical Bores |
| CC1(min.) |
10 |
μm |
Clearance in Bearings with Cylindrical Bores |
| CC1(max.) |
40 |
μm |
Clearance in Bearings with Tapered Bores |
| CC1(min.) |
20 |
μm |
Clearance in Bearings with Tapered Bores |
| CC0(max.) |
30 |
μm |
Clearance in Bearings with Tapered Bores |
| CC0(min.) |
15 |
μm |
Clearance in Bearings with Tapered Bores |
| CC9(max.)
|
20 |
μm |
Clearance in Bearings with Tapered Bores |
| CC9(min.)
|
10 |
μm |
Clearance in Bearings with Tapered Bores |
|
3.5 |
g/brg |
Recommended Grease Quantities |
Mass
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5. Please allow 3-5 days for your return to be processed or exchange to be sent.
