苍井优三级在线观看,欧美又粗又硬又爽直播大片,精品深夜AV无码一区二区老年,麻豆AV一区二区三区,日韩一区精品视频一区二区,人妻丰满精品一区二区A片,国产女人18毛片水真多1,肉乳乱无码A片观看免费,人妻熟女一区二区AV,乱肉YIN荡系列合集TXT

雙列圓柱滾子軸承

雙列圓柱滾子軸承

規格與參數

Bearing NO.
Cylindrical bore :NNU40/630
Tapered bore :NNU40/630K
Boundary dimensions(mm)
d :630
D :920
B/C :290
r?1.2min :7.5
r3.4min :7.5
Basic load ratings(kN)
Cr :7650
Cor :17500
Limiting speed(rpm)
Speed Ratings :560
Abutment and fillet dimensions(mm)
da max :688
Da max :887
ra max :6
rb max :6
Weight (kg)
Refer :635