When fix knocker unit and base with attached bolt set, pay attention to the clamp torque. If the clamp torque is not enough, the bolt may be loosened by percussion of the knocker.
Tightening torque(N・m)
Nut size |
*M6 |
M8 |
M10 |
M12 |
M14 |
M16 |
M20 |
|
Tightening torque (N・m) |
Lower nut |
*4.8 |
10.8 |
20.6 |
35.3 |
56.9 |
84.3 |
167 |
Upper nut |
*4.8 |
7.6 |
14.4 |
24.7 |
39.8 |
59.0 |
117 |
To prevent fall down, suspend the knocker unit by the suspender wire and the shackle. Certainly perform prevention for looseness of the shackle thread by a piece of wire.
RKV type
RKD type
Prescribed dimensions for the RKD Model mounting If not using the base assembly provided, make sure that the dimensions of the part to which the knocker is mounted and the base mounting part meet the prescribed dimensions listed below.
Model | Prescribed dimensions(mm) |
---|---|
RKD30PB | 50±2 |
RKD40PB | 75±2 |
RKD60PB | 90±2 |
RKD80PA | |
RKD100PA | |
RKD120P |