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| | | THE CODE OF ROLLING BEARINGS | | |
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| | | 3.CHOICE OF BEARING DIMENSION | | |
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| | | | | | | | | | | | | | | | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | | | | Inner structure | Seal,shield and ring shape changed | Cage and other material | Bearing material | Tolerance degree | Clearance | Arrangement | Other | | | | | | | | | | | | | | | |
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| | | Inner structure code: | | |
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| | | A AC B C | | (2)Spherical roller bearing with a flangeless inner ring, symmetrical rollers, loose guide ring and a pressed window-type steel cage Spherical roller bearing of C design, but with retaining flanges on the inner ring and a machined cage Spherical roller bearing of C design but with enhanced roller guidance Enhanced structure (inner structure design changed, increase bearing support load capability) | | |
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| | | CA CC E | | |
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| | | Seal, shield and outer shape changed code and outer shape changed code: | | |
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| | | K K30 2K N NR 2RS 2RZ | | Tapered bore, taper 1:12 Tapered bore, taper 1:30 Double taper bore,taper 1:12 Snap ring groove in the outer ring Snap ring groove in the outer ring with appropriate snap ring Contact seal on both sides of the bearing Low-friction seal on both sides of the bearing | | |
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| | | Cage and its material:
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| | | F3 FA FB M MA MB Q L T J W V | | 1 | | Cast iron cage Machined steel or special cast iron cage; outer ring centred Machined steel or special cast iron cage; inner ring centred Brass machined cage Machined brass cage, outer ring centred Machined brass cage, inner ring centred Bronze machined cage Alloy machined cage Phenolil resin cage Brass sheet cage Welding cage Full complement bearing (without cage) | | |
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