x-DIN-6885

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DIN 6885 Part 1

3 ST

Material: for parallel key heights h up to 25 am: St 50-1K according to DIN 1652

*""

for parallel key heights h over 25 ma: St 60-2 Xaccording to DIN 1652;

other grades of steel, e.g. quality steels and high-grade steels, are subject to

special agreement.

1) If parallel keys of Types A and B are to be provided with holes for jacking screws (8), this shall be specially indicated when ordering. In this ease the^deeignation reads, for example:

j-f

§

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o ^

Parallel key AS 12 * 8 * 56 DIN 6885

2

) Types A and B can also be combined with one end round and the other square* In this ease the designation reads, for examples Parallel key AB 12 x 8 x56 DIN 6885

m

*) If parallel keys of Types B and F from the 12 v 8 sine upwards are required to be supplied minus holes

_} jg

m

for jacking screws (oS) this must be specially stated when ordering. In this case the designation

H

reads, for example:

2 0

Parallel key EoS 12x8x56 DIN 6885

U

3

) Where mating dimensions are concerned, and particularly those of parallel shaft ends, the correlation

of parallel key cross-sections to shaft nominal diameters must be observed without fail. The correlation

-*



§ e) The previously standardised parallel counterbore in the tapped hole to take the jacking screw has been

o

5

f) IS0ACl6does not specify keyway depths with overaise. The previously specified hub keyway depths with

3

o

oversise have been re-calculated on the basis of the shaft keyway depths modified according to the

P

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ISO proposal so that the oversises necessary for final fitting are restored. They correspond to those for keys according to DIN 6886 (ISO draft No. 1085).

5" ?

o

replaced by a conical countersink (Section M-N).

£ g) The J9 tolerance sone for hub keyway widths has been changed to JS9. Since the specified tolerances

§

$

g

are also recognised internationally they now count under the coverage of this Standard (Tootnote 5) as

I

2

the normal type, and not - as previously - as a guideline. Tolerances differing from them must be

•*

§

specially indicated.

%

* h) The previous lengths 315 *nd 355 mm have been replaced by lengths 320 and 360 mm.

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1) The weights of the keys have been checked and corrected to the extent that this was necessary, e.g.

owing to the new lengths 320 and 360 mm. The weight deduction for Type A has been corrected for certain slses.

® §

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DIN 6885 Part 1 Page 5