Add to Favorites | Homepage | RSS
HOME > Products & Service > Cemented Carbide > Mining & Drilling Carbide Tools > Mining Bits

K21 ( Mining Bits )

| Print this page  |  Click Counts: 12  |   Size:     

Type K21

Type K21 for making cross and X-shaped cemented carbide drill bits.

Unit: mm

TypeDimension
LHSrβe
K211414.012.08.020.03o1.0
K21-8100115.014.02o
K211616.012.022.03o
K21-8700317.018.012.020.02o30'1.5
K211818.014.010.022.53o1.0
K212020.018.028.5
K212626.016.035.01.5
K212828.0
K213030.012.038.0
K213232.044.52.0
K213535.051.0
K213939.018.014.057.5
K214343.020.063.5

Technical Requirements

Allowable deviation in the size and shape of the cemented mining bits should be comply with following:

a. The flatness of the blank supporting plane should not more than 0.1mm, and flatness of non supporting plane should comply with the following:
    Unit: mm
ThicknessLength
10~20>20~40>40
Flatness
60.120.250.30
>6~100.100.200.25
>10~200.080.150.20

b. The allowable deviation of the length (L), height (H), diameter (D) should comply with the following. Among which, the allowable deviation of the length (L) of Model K10 is 0~+1.0mm; the allowable deviation of the height (H) of Model K10, K20, K21, K23 is -0.8~+0mm, and for the thickness (S) is -0.5~0mm; the allowable deviation of the height (H) of Model K0, K20, K21, K23 is -0.5~+0.2mm, and for the thickness (S) is -0.6~0mm.

    Unit: mm
Basic DimensionAllowable Deviation
Ordinary GradeAdvanced Grade
>5.0~11.0±0.25 
>11.0~18.0±0.50±0.35
>18.0~26.0±0.60±0.40
>26.0~34.0±0.80±0.45
>34.0~45.0±1.00±0.50
>45.0~55.0±1.10±0.60

The allowable deviation of the angle of the mining bits should comply with the following:  
 
AngleAllowable Deviation
≤5o0o~+1o
>5o~15o±1o
>15o±2o
 

Pre: K20 ( Mining Bits )

Next: K22 ( Mining Bits )

     
Send Inquiry  
Contact Person: (*)
Gender: (*)
Job Title:
Company Name: (*)
Email: (*)
Phone: (*)
Mobile Phone
Website:
Address:
Subject: (*)
Choose Product:
Upload File:
Content: (*)
Highlight Products
1025T/H High Temperature Separating Circulating Fluidized Bed Boiler
1025T/H High Tempera
Waste Heat Boiler for Cement Kiln
Waste Heat Boiler fo
Valves Repairing Grinder VRM-PM500 - Vertical Valve Grinding & Lapping Machine
Valves Repairing Gri
Valves Repairing Grinder VRM-PM800 - Vertical Valve Grinding & Lapping Machine
Valves Repairing Gri
Relative Products
New Products
Hot Products