Model  

dimension(mm)

length(mm)

O.D

(mm)

Leading distance

Leading circles

semi taper of bobbin

SAD-a

Φ20

176

Φ82.5

  152  

2.5

  0-5°57'

SAD-b

Φ20

176

Φ82

152

2.5

0

SAD-c

Φ20

185

Φ82.5

143

2

flat

SAD-d

Φ20

185

Φ82.5

147

2

cylinder