This 3 sentence summary provides the key details about the 3D model of a bearing created in AutoCAD: The document outlines the steps taken to model a bearing in AutoCAD 3D 2007, including using lines, arcs, and regions to construct the shape, mirroring the model, revolving it around an axis, and arranging multiple copies in an array. Screenshots are included to show the final 3D model rendered with realistic shading.

1. [Document title]
HITEC UNIVERSITY TAXILA
PROJECT PROPOSAL
SUBMITTED TO:
MAJ. (R) ATHAR HAMEED
SUBMITTED BY:
SECTION # C
GROUP#
 MUHAMMAD ABDULLAH 15-ME-075
 ZEESHAN RASOOL 15-ME-047
 SAFIULLAH 15-ME-123
 MUAZ ALI 15-ME-079

2. [Document title]
3d Model of “Bearing”:
The model is drawn in auto cad 3d 2007. The drawing limits are set and the units
selected are mm. use 3d modeling option.
Following are the details of the model that is created.
Commands:
Command: _line Specify firstpoint: 70, 18
Specify nextpoint or [Undo]: 17
Specify nextpoint or [Undo]: '_pan
>>Press ESC or ENTER to exit, or right-click to display shortcutmenu.
Resuming LINE command.
Specify nextpoint or [Undo]: 20
Specify nextpoint or [Close/Undo]: 70
Specify nextpoint or [Close/Undo]: 20
Specify nextpoint or [Close/Undo]: 17
Specify nextpoint or [Close/Undo]: *Cancel*
Command: *Cancel*
Command:
Command:
Command: _arc Specify startpointof arc or [Center]: 70,0
Specify second pointof arc or [Center/End]: -10,-18
Specify end pointof arc: @10,-18

3. [Document title]
Command:
Command: _.erase 1 found
Command:
Command:
Command: _arc Specify startpointof arc or [Center]: 70, 18
Specify second pointof arc or [Center/End]: @-10,-18
Specify end pointof arc: 10,-18
Automatic save to C:UsersDellAppDataLocalTempDrawing2_1_1_0041.sv$ ...
Command:
Command: _u 3 Points GROUP
Command:
Command:
Command: _arc Specify startpointof arc or [Center]:
Specify second pointof arc or [Center/End]: @-10,-18
Specify end pointof arc:
Command:
Command:
Command: _region
Select objects: Specify opposite corner: 6 found
Select objects:
1 loop extracted.
1 Region created.
Command:
Command:

4. [Document title]
Command: _sphere
Specify center pointor [3P/2P/Ttr]: 80,0
Specify radiusor [Diameter]:
Requiresnumeric distance, second point, or option keyword.
Specify radiusor [Diameter]: 19.5
Command:
Command:
Command: _mirror
Select objects: 1 found
Select objects:
Specify firstpoint of mirror line: 80, 0
Specify second pointof mirror line: 1
Erase source objects? [Yes/No] <N>:
Command:
Command:
Command: _revolve
Currentwire frame density: ISOLINES=4
Select objectsto revolve: 1 found
Select objectsto revolve: 1 found, 2 total
Select objectsto revolve:
Specify axis start pointor define axis by [Object/X/Y/Z] <Object>: 0,0
Specify axis endpoint: 1
Specify angle of revolution or [Startangle] <360>:

5. [Document title]
Command: '_pan
Press ESC or ENTER to exit, or right-click to display shortcutmenu.
Command:
Command:
Command: _-view Enter an option
[? /Delete/Orthographic/Restore/Save/settings/Window]: _frontRegenerating model.
Command:
Command:
Command: _array
Select objects: 1 found
Select objects:
Specify center pointof array:
Command:
Command:
Command: _vscurrent
Enter an option [2dwireframe/3dwireframe/3dHidden/Realistic/Conceptual/Other]
<2dwireframe>: _C
Command: Specify opposite corner:
Command:
Command: '_.properties
Command:
Command: *Cancel*
Command: *Cancel*
Command:
Command:
Command:
Command: _properties
Command: *Cancel*

6. [Document title]
Command: '_3dorbitPressESC or ENTER to exit, or right-click to display
Shortcut-menu.
Screen Shots:

7. [Document title]