Develop a 3D model of a roller system for a heavy metal cart in Solidworks

You need to create a 3D model of a roller system in SolidWorks 2023, which provides movement of a heavy metal cart along two C-shaped guides.
The rollers used are bearings 6304 ZZ (https://pidshipnyk.com.ua/uk/p80984-pidshipnik-6304-zz205215-metal), mounted on M20 bolts. The design of one roller must withstand a load up to 100 kg, and be suitable for welded or bolted mounting.

1. Dimensions and overall operation logic: the bearing is placed on a bolt, the bolt is attached to the frame (cart). The bearing moves along the C-shaped guide.

• Bearing 6304 ZZ:
  Ø20 × Ø52 × 15 mm
  https://pidshipnyk.com.ua/uk/p80984-pidshipnik-6304-zz205215-metal

• Bolt: M20, length according to installation (e.g., 70–100 mm), to be selected from available options in Ukraine.

• Spacer tube or nut between bearing and bracket

• Washers, lock washer, nut - standard components

2. Placement on guides:

• Guides - C-shaped profiles made of 4mm steel. It is necessary to model a C-shaped guide (profile).

• Preliminary steel thickness of the guide is 4 mm. The guide will have a 1mm clearance for free movement of the bearing.

3. Design of the roller bracket:

• The bracket should include:

  • Hole for M20 bolt

  • Place for support washer / fixation

  • Ability to weld or bolt to the base of the cart

• Must allow bearing replacement

4. Materials:

• Main structure: black metal (carbon steel)

• Bolts - standard steel M20 (available in Ukraine)

• Tube (or nut) - regular steel or machined bushing

• The assembly should be as simple and technological as possible

5. Additional available technologies at our production (not mandatory to use):

• Laser cutting (for flanges, plates)

• Sheet metal bending:

  • Maximum bend length - 1600 mm

  • Thickness up to 3 mm - full length bending possible

  • Thickness over 3 mm - only short bends

• Milling (holes, grooves, burs - if needed)

• Welding - for the bracket body or mounting

6. Mechanical requirements:

• Load on one roller: up to 100 kg (to be modeled)

• Radial forces - main source of load

• Rotation: 0.1–1 rpm

• It is desirable to have a safety margin of x1.5–x2

7. . What needs to be provided:

• Files of all individual parts (SolidWorks format)

• All elements must have correct material assignment (correct weight indicated).

• Assembly file with all parts correctly linked

• Assembly drawings with dimensions

• Specification listing all parts and materials

• DXF/DWG files for laser cutting (sheet metal layouts)

• .step file for viewing

• Assembly and manufacturing sequence.

8. Expected result:

• Complete model of the roller assembly with all components. Made from available parts in Ukraine.

• Ease of installation to the frame of the cart

• Ability to replace the bearing

• Manufacturing efficiency and compliance with load capacity

Deadline:

5–7 days after project start