Calculated Industries Machinist Calc 4086 - Bolt Pattern - Model 4086

Us e r 's GU i d e — 55
Start
Angle
X
C ,Y C
X 2 ,Y 2
X 1 ,Y 1
X 3 ,Y 3
Bolt Pattern – Model 4086
Calculate the Bolt Pattern for a layout with a 4.5 Inch Diameter, a
30° Start Angle and 6 Bolts.
Note: When determining angles, 0° is at the 3 o’clock position and the
rotation goes counterclockwise.
KEYSTROKE DISPLAY
OO
0.
1. Enter the Angle of the rst bolt hole:
30gb
(Start Angle) ANGLE 30.°
2. Enter the Bolt Circle Diameter:
4.5id
DIA 4.5 INCH
3. Enter the Number of Bolts:
6b
BOLTS 6.
4. Calculate the hole Center-to-Center Spacing and the x and
y coordinates:
b
(Center-to-Center Spacing) OC-OC 2.2500 INCH
b
X-01 1.9486 INCH
b
Y-01 1.1250 INCH
b
X-02 0.0000 INCH
b
Y-02 2.2500 INCH
(cont'd)