Witeam Commercial (Int'l) Ltd    首页 > Products & Service > Cemented Carbide > Mining & Drilling Carbide Tools > Gelolgical Exploration Drilling Bits > 正文 Back Printing

Type CQ(Spherical Button)

  2008-09-06 21:59:58  


Type CQ (Spherical Button)  
 
Type
Dimension
D
H
R
h
β
e
CQ-80001
4.5
10.5
2.3
8.7
/
/
CQ-74001
6.0
8.0
3.1
5.5
45o
0.7
CQ-84001
8.0
4.1
0.3
CQ1313
13.0
13.5
6.7
8.0
CQ1315
15.5
6.5
10.0
18o
1.5
CQ1415
14.0
15.0
7.4
CQ1727
17.6
27.0
9.0
19.9
45o
1.0
CQ1825
18.0
25.0
16.0
30o
1.4

Technical Requirements

  Deviation of the Diameter (D), Height (H) of the mining bits should comply with the following stipulations: 

Unit: mm
Grade D H
Basic Size Allowable Deviation Basic Size Allowable Deviation
Ordinary Level ≤13.0 +0.35
+0.10
≤10 ±0.25
>10.0~18.0 ±0.30
>13.0~22.0 +0.45
+0.10
>18.0~25.0 ±0.35
>22.0 +0.55
+0.10
>25.0 ±0.45
Higher Level ≤18.0 +0.25
+0.05/td>
≤11.0 ±0.15
>11.0~18.0 ±0.20
>18.0~25.0 +0.30
+0.05
>18.0~25.0 ±0.25
>25.0 ±0.30

  The allowed deviation of radius of Rough unit of the mining bits is between 0~0.5mm; 
    The allowable deviation of e: +0.2~+0.4mm

■  The allowed deviation of the unit of mining bits.

Unit: mm
Angle Allowable Deviation
≤5o ±1o
>5o~15o ±2o
>15o ±3o
  



http://www.witeam.com.hk/products/Cemented_Carbide/Mining_Drilling_Carbide_Tools/Gelolgical_Exploration_Drilling_Bits/307.html