American Standard Gear Hobs
(ANSI B 94.7)

  ● 14.5°or 20°Pressure angle.
  ● Non-topping.
  ● Right or left hand.
  ● Single or multiple thread ★
  ● British standard gera hobs to BS 2062/1 can also be supplied.
  ● ★ It is necessary to consult with customers about accuracy grade of multiple thread hobs in ordering.
★★ The old 2.157/DP may be supplied, please inquire.
  ● ★★★ It is better to design with inserted blade hob for DP<2.54.
Finishing Standard Depth ★★ (To ANSI B6.1)

 

　　　　　　　　　　　　　　Single Thread Hobs　　　　　Unit：Inches

Diametral
Pitch
径 节
Outside
Dia.
外 径
Overall
Length
全 长
Hole Dia.
孔 径
1.00 ★★★
10.75
15.00
2.50
11.75
3.00
1.25 ★★★
8.75
12.00
2.00
9.75
2.50
1.50 ★★★
8.00
10.00
2.00
9.00
2.50
1.75 ★★★
7.25
9.00
2.00
8.25
2.50
2.00-2.24 ★★★
5.75
8.00
1.50
7.00
2.00
2.25-2.49 ★★★
5.50
7.50
1.50
6.50
2.00
2.50-2.74 ★★★
5.00
7.00
1.50
6.25
2.00
2.75-2.99
5.00
6.00
1.50
6.00
2.00
3.00-3.49
4.50
5.00
1.25
5.00
1.50
5.75
5.75
2.00
3.50-3.99
4.25
4.75
1.25
4.75
1.50
5.50
5.50
2.00
4.00-4.99
4.00
4.00
1.25
4.50
4.50
1.50
5.25
5.25
2.00
5.00-6.99
3.50
3.50
1.25
4.00
4.00
1.50
4.75
4.75
2.00
7.00-7.99
3.25
3.25
1.25
3.75
3.75
1.50
4.50
4.50
2.00
8.00-11.99
3.00
3.00
1.25
3.50
3.50
1.50
12.00-13.99
2.75
2.75
1.25
14.00-19.99
2.50
2.50
20.00-21.99
22.00-23.99
2.00
24.00-25.40


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