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UNI6604 DIN6885 A3 Carbon Steel Plain Square And Rectangular Keys Type A

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UNI6604 DIN6885 A3 Carbon Steel Plain Square And Rectangular Keys Type A

Country/Region china
City & Province suzhou
Categories Speed Reducers
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Product Details

UNI6604 DIN6885 A3 Carbon Steel Plain Square And Rectangular Keys Type A

operating principle:

Flat keys are industrial parts that rely on the extrusion of two sides and the side of the keyway to transfer torque.

classification:

According to different uses, flat keys can be divided into ordinary flat keys, thin flat keys, guided flat keys three kinds. The ordinary flat key and thin flat key are used for static connection, and the guiding flat key is used for dynamic connection.

Standard:

The standard for ordinary flat keys is DIN6885. According to the shape of the two ends of the flat keys, DIN6885 is divided into three types of ABC, type A is round at both ends, type B is square at both ends, and type C is round at one end and square at the other end. The corresponding international standard UNI6604 is divided into A&B models.

Grade and material:

Carbon steel 4.8 grade commonly used Q235, A3 and other low carbon steel processing, 8.8 grade commonly used 35 steel, 45 steel and other medium carbon steel processing; Stainless steel commonly used 304, 316 and other materials.

Surface treatment:

Because the tolerances of the width and thickness of the flat key h8 and h11 are very small, that is, the requirements are relatively precise, and the surface treatment of conventional zinc plating exceeds the tolerance requirements, so it is basically natural color.

 

:

Normal size 2 3 4 5 6 8 10
b
b max=nominal size (h8)   2 3 4 5 6 8 10
min   1.986 2.986 3.982 4.982 5.982 7.978 9.978
h max=nominal size   2 3 4 5 6 7 8
rectangle(h11) min - - - - - 6.91 7.91
square(h8) min 1.986 2.986 3.982 4.982 5.982 - -
s chamfering or rounding min 0.16 0.16 0.16 0.25 0.25 0.25 0.4
max 0.25 0.25 0.25 0.4 0.4 0.4 0.6
Normal size 12 14 16 18 20 22 25
b
b max=nominal size (h8)   12 14 16 18 20 22 25
min   11.973 13.973 15.973 17.973 19.967 21.967 24.967
h max=nominal size   8 9 10 11 12 14 14
rectangle(h11) min 7.91 8.91 9.91 10.89 11.89 13.89 13.89
square(h8) min - - - - - - -
s chamfering or rounding min 0.4 0.4 0.4 0.4 0.6 0.6 0.6
max 0.6 0.6 0.6 0.6 0.8 0.8 0.8
Normal size 28 32 36 40 45 50 56
b
b max=nominal size (h8)   28 32 36 40 45 50 56
min   27.967 31.961 35.961 39.961 44.961 49.961 55.954
h max=nominal size   16 18 20 22 25 28 32
rectangle(h11) min 15.89 17.89 19.87 21.87 24.87 27.87 31.84
square(h8) min - - - - - - -
s chamfering or rounding min 0.6 0.6 1 1 1 1 1.6
max 0.8 0.8 1.2 1.2 1.2 1.2 2
Normal size 63 70 80 90 100    
b    
b max=nominal size (h8)   63 70 80 90 100    
min   62.954 69.954 79.954 89.946 99.946    
h max=nominal size   32 36 40 45 50    
rectangle(h11) min 31.84 35.84 39.84 44.84 49.84    
square(h8) min - - - - -    
s chamfering or rounding min 1.6 1.6 2.5 2.5 2.5    
max 2 2 3 3 3    
 

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