Comparison Of The Influence Of Preload Mode And Speed Between Ceramic Ball Bearing And All-steel Bearing
Comparison Of The Influence Of Preload Mode And Speed Between Ceramic Ball Bearing And All-steel Bearing
PRODUCT
Flat type of face mask machine bearing how to judge from the code?
by：Waxing
2020-11-20
From left to right for the first or the first and second number together '6' said deep groove ball bearings,
0 class)
'4' said double row deep groove ball bearings,
0 class)
'2' or '1' said self-aligning ball bearings,
Basic model, a total of four Numbers)
（
1)
'21', '22', '' 23' 24 'said self-aligning roller bearings.
（
3 classes)
'N' for cylindrical roller bearing (
Including short cylindrical roller and part of a long and thin needle)
（
2 class)
Without a guard 'NU' inner circle.
Single guard 'NJ' inner circle.
'The NF' outer rim.
'N' outer ring without guard.
'NN' double row cylindrical roller, outer rim.
'NNU' double row cylindrical roller and inner circle without a guard.
Roller diameter is the size of length at least five times, called the needle roller bearing (
4 class)
'NA' rotary cut outer ring needle roller bearing 'NK' stamping 'K' shell needle bearing needle roller and cage components, no inside and outside the ring.
Angular contact ball bearings (' 7 'said
6 class)
'3' for tapered roller bearing (
The metric system)
（
7)
'51', '52' said '53' angular contact ball bearing,
Basic model, a total of five Numbers)
（
Eight classes)
'81' said short cylindrical roller thrust bearing,
9 class)
'29' said thrust self-aligning roller bearings,
9 class)
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