40 — M
achinist
c
alc™
P
ro
(cont’d)
bolt Pattern
Calculate the Bolt Pattern for a layout with a 90 mm Diameter, a
20° Start Angle and 3 Bolts. The Center x-coordinate is 250 mm
and the center y-coordinate is 380 mm.
Note:
When determining angles, 0° is at the 3 o’clock position and the
rotation goes counterclockwise.
KeysTRoKe
DIsPlay
O O
0.
1. Enter the Center x-coordinate:
2 5 0 m a
aDJ
$
250.
MM
2. Enter the Center y-coordinate:
3 8 0 m p
oPP
$
380.
MM
3. Enter the Start Angle:
2 0 n
anGle
$
20.°
4. Enter Bolt Circle Diameter:
9 0 d
DIa
$
90.
MM
5. Enter the Number of Bolts:
3 b
bolTs
$
3.
6. Calculate Center-to-Center Spacing and the
x and y-coordinates:
b
(Center-to-Center Spacing)
oC-oC 77.9423
MM
b
X-01 292.2862
MM
b
y-01 395.3909
MM
b
X-02 215.5280
MM
b
y-02 408.9254
MM
b
X-03 242.1858
MM
b
y-03 335.6837
MM
b
DIa
$
90.
MM
UG4089E-A-inside.indd 40
6/9/2011 3:16:18 PM
