Nabtesco RV E Series, Руководство по эксплуатации

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Appendix: Design Scheme of Input Gear
73
<Design example 3: For tapered shafts>
Note 1. For the bolt through hole diameter (d3), radial runout, and the shaft hole position (LC), refer to “Dimensions after
modification” in the “Dimensions” table on pages 69 and 70.
2. Design the motor shaft hole diameter (d1) according to the motor shaft diameter to be used.
3. For the keyway width (k) and keyway height (a), refer to the specifications of the key to be used.
4. There are two ways to fix the tapered shaft to the motor shaft: draw nut and draw bolt. Fix the shaft using either of
them, referring to the drawings below.
5. You can manufacture the draw nut and draw bolt on your own, or contact us.
• When fixing with a draw nut • When fixing with a draw bolt
 Design of the oil seal area
<Design example 4>
If a lip surface is required for the oil seal, manufacture a new input gear and quench the D2 section, and
then perform plunge grinding.
Note 1. The design specifications vary depending on the oil seal manufacturer. When designing, be sure to confirm with the
manufacturer of the oil seal to be used.
2. The standard input gear is not compatible with the oil seal surface. If the lip surface is required for the oil seal,
manufacture a new input gear.
3. Rubber containing fluorine is recommended for the material of the oil seal.
4. When assembling the oil seal, be careful to avoid any contact between the lip section and the gear, as it causes
scratches.
5. Design the oil seal assembly position so that the lip section of the oil seal does not fall off from the plunge grinding
range.
Dihedral
chamfer
C
le
ar
an
ce
C
le
ar
an
ce
d5 drill
Tapered to 1/10
C
le
ar
a
nce
C
le
ar
a
nce
No edge
(Plunge grinding range)
Seal with seal washer, etc.
(Plunge grinding)
Dihedral
chamfer
Cross section Z-Z
Cross section Z-Z