型号 |
主要尺寸(mm) |
重量 (g) |
|
d |
F |
B |
IR20x24x20
|
20
|
24
|
20
|
=((C63*C63*3.1415926/4-B63*B63*3.1415926/4)*D63)*7.8/1000
|
|
IR20x25x12.5
|
20
|
25
|
12.5
|
=((C64*C64*3.1415926/4-B64*B64*3.1415926/4)*D64)*7.8/1000
|
|
IR20x25x16
|
20
|
25
|
16
|
=((C65*C65*3.1415926/4-B65*B65*3.1415926/4)*D65)*7.8/1000
|
|
IR20x25x16.5
|
20
|
25
|
16.5
|
=((C66*C66*3.1415926/4-B66*B66*3.1415926/4)*D66)*7.8/1000
|
|
IR20x25x17
|
20
|
25
|
17
|
=((C67*C67*3.1415926/4-B67*B67*3.1415926/4)*D67)*7.8/1000
|
|
IR20x25x18
|
20
|
25
|
18
|
=((C68*C68*3.1415926/4-B68*B68*3.1415926/4)*D68)*7.8/1000
|
|
IR20x25x20
|
20
|
25
|
20
|
=((C69*C69*3.1415926/4-B69*B69*3.1415926/4)*D69)*7.8/1000
|
|
IR20x25x30
|
20
|
25
|
30
|
=((C70*C70*3.1415926/4-B70*B70*3.1415926/4)*D70)*7.8/1000
|
|
IR20x28x20
|
20
|
28
|
20
|
=((C71*C71*3.1415926/4-B71*B71*3.1415926/4)*D71)*7.8/1000
|
|
IR/LR20x25x20.5
|
20
|
25
|
20.5
|
=((C72*C72*3.1415926/4-B72*B72*3.1415926/4)*D72)*7.8/1000
|
|
IR/LR20x25x26.5
|
20
|
25
|
26.5
|
=((C73*C73*3.1415926/4-B73*B73*3.1415926/4)*D73)*7.8/1000
|
|
IR/LR20x25x38.5
|
20
|
25
|
38.5
|
=((C74*C74*3.1415926/4-B74*B74*3.1415926/4)*D74)*7.8/1000
|
|