Woodruff key DIN 6888 3x6,5 Steel bright
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r1 chamfering (all sides), bevelled or rounding of manufacturer's choice
r2 rounding of groove bottom for shaft and hub
1 For connection dimensions, in particular of shaft ends, the allocation of the woodruff key cross-sections to the shaft nominal diameters must be maintained. Allocation I applies wherever the woodruff keys are used like parallel keys, i.e. to transmit the entire torque. Allocation II applies wherever the woodruff key is used only for fixing the position of the drive element and for transmitting the torque of other elements, e.g. cotter or taper.
2 The permissible differences for the groove widths apply only as a guideline. It is recommended to comply with ISO grade IT8 instead of IT9 for the widths of reamed grooves (i.e. P8 instead of P9. N8 instead of N9 and JS8 instead of JS9).
3 In the production drawings, the dimensions t1 and (d1 - t1) plus t2 and (d1 + t2) can be entered adjacently to one another, however in many cases the dimensions t1 and (d1 + t2) are sufficient. It may be necessary here to take into account the permissible differences and machining allowances of shaft and hub bore.
* Use row A (high hub groove) for preference, conforms to DIN 6885-1 (t2 with back clearance).
** Row B (low hub groove) for machine tools, conforms to DIN 6885-2.
*** With allocation II of the woodruff keys to the shaft diameters the tolerance field D10 can also be selected.
**** similar to DIN 6888
r2 rounding of groove bottom for shaft and hub
1 For connection dimensions, in particular of shaft ends, the allocation of the woodruff key cross-sections to the shaft nominal diameters must be maintained. Allocation I applies wherever the woodruff keys are used like parallel keys, i.e. to transmit the entire torque. Allocation II applies wherever the woodruff key is used only for fixing the position of the drive element and for transmitting the torque of other elements, e.g. cotter or taper.
2 The permissible differences for the groove widths apply only as a guideline. It is recommended to comply with ISO grade IT8 instead of IT9 for the widths of reamed grooves (i.e. P8 instead of P9. N8 instead of N9 and JS8 instead of JS9).
3 In the production drawings, the dimensions t1 and (d1 - t1) plus t2 and (d1 + t2) can be entered adjacently to one another, however in many cases the dimensions t1 and (d1 + t2) are sufficient. It may be necessary here to take into account the permissible differences and machining allowances of shaft and hub bore.
* Use row A (high hub groove) for preference, conforms to DIN 6885-1 (t2 with back clearance).
** Row B (low hub groove) for machine tools, conforms to DIN 6885-2.
*** With allocation II of the woodruff keys to the shaft diameters the tolerance field D10 can also be selected.
**** similar to DIN 6888
Article no.
10 34 0030 0065/001
Identifier
Woodruff key DIN 6888
Size
3x6,5
Material group
Steel
Surface
bright
Width b
3
Width b Tolerance
h9
Height h
6,5
Height h Tolerance
h12
for shaft Ø d1¹ allocation 1 above
-
for shaft Ø d1¹ allocation 1 up to
-
for shaft Ø d1¹ allocation 2 above
12
for shaft Ø d1¹ allocation 2 up to
17
Diameter d2
16
Diameter d2 Tolerance
-0,1
Shaft groove width b² (firm seat P9, loose seat N9)
3
Shaft groove depth t1³, row A
5,3
Shaft groove depth t1³, row B
5,6
Shaft groove depth t1³ Tolerance row A and B
0,1
Shaft groove diameter d2 +0,5
16
Hub groove width b² (firm seat P9, loose seat JS9***)
3
Hub groove depth t2³, row A*
1,4
Hub groove depth t2³, row B**
1,1
Hub groove depth t2³ Tolerance row A and B
0,1
Bevelled/Rounded r1 min.
0,2
Bevelled/Rounded r1 max.
0,3
Rounding of groove bottom r2 max.
0,2
Rounding of groove bottom r2 min.
0,1
Length l ≈
15,72
Material
Thermal treatment steel 1.0503 (C45+C)
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