Component $/Unit Genesis Qty Genesis Subtotal XL Qty XL Subtotal MAX Qty MAX Subtotal
V-Wheel $6.00 30 $180.00 30 $180.00 30 $180.00
X-Axis GT2 Timing Belt $40.00 to $180.00 2 $80.00 2 $140.00 2 $360.00
Y-Axis GT2 Timing Belt $20.00 to $30.00 1 $20.00 1 $30.00 1 $30.00
Belt Sleeve $0.50 6 $3.00 6 $3.00 6 $3.00
20 Tooth GT2 Pulley $6.00 3 $18.00 3 $18.00 3 $18.00
5mm to 8mm Shaft Coupling $6.00 1 $6.00 1 $6.00 1 $6.00
Leadscrew $35.00 1 $35.00 1 $35.00 1 $35.00
Leadscrew Block $7.00 1 $7.00 1 $7.00 1 $7.00
TOTALS   39 $346.00 39 $416.00 39 $646.00

V-Wheel

These polycarbonate V-wheels are precision machined to allow FarmBot to move in the X, Y, and Z directions smoothly and precisely. Each wheel comes pre-assembled with two stainless steel rubber-sealed ball bearings and one M5 precision shim.

Wheel Material Clear polycarbonate
Wheel Dimensions 23.9mm OD, 16mm ID, 10.23mm thickness
Bearing Trade Name SS-625-2RS (SS = stainless steel, 625 = bearing size, 2RS = two rubber seals)
Bearing Material Stainless steel
Bearing Dimensions 16mm OD, 5mm ID, 5mm thickness
Bearing Seal Rubber sealed
Precision Shim Material Stainless steel
Precision Shim Dimensions 10mm OD, 5mm ID, 1mm thickness
Price $6.00
Quantity 30
Internal Part Name V-Wheels (pre-assembled w/ SS M5 precision shim and SS bearings)
Vendor  
$/pc $1.10
Component Tests  
Notes  

GT2 Timing Belt

Material Neoprene with fiberglass cords
Lengths Genesis: 1.7m, 4.5m
Genesis XL: 3.2m, 7.5m
Genesis MAX: 3.2m, 19.5m
Width 5mm
Thickness 0.75mm
Pitch GT2 (2mm)
Color Black (no markings)
Price 1.7m - $20.00
3.2m - $30.00
4.5m - $40.00
7.5m - $70.00
19.5m - $180.00
Quantity Genesis
1.7m - 1
4.5m - 2

Genesis XL
3.2m - 1
7.5m - 2

Genesis MAX
3.5m - 1
19.5m - 2
Internal Part Name GT2 Timing Belt - [length]
Vendor  
$/pc 1.7m - $1.00
3.2m - $1.80
4.5m - $2.50
7.5m - $4.20
Component Tests  
Notes  

Belt Sleeve

These sleeves secure the loose end of a belt to itself.

Material Aluminum
Surface Finish Sand blasted and clear anodized
Price $0.50
Quantity 6
Internal Part Name Belt Sleeve
Vendor LDO
$/pc $0.20
Component Tests  
Notes  

GT2 Pulley

These pulleys are attached directly to NEMA 17 stepper motor shafts or onto the driveshaft. They transfer power from the motor to the belt such that FarmBot can move in the X and Y directions.

Material Aluminum
Number of Teeth 20
Inner Diameter 5mm
Outer Diameter 15mm
Height 14mm
Setscrews Two, stainless steel, with 2mm hex drive
Max Belt Width 7mm
Pitch GT2 (2mm)
Price $6.00
Quantity 3
Internal Part Name 20 Tooth GT2 Pulleys w/ SS Setscrews w/ 2mm drive
Vendor  
$/pc $0.75
Component Tests  
Notes  

5mm to 8mm Shaft Coupling

This aluminum coupling connects the Z-axis stepper motor to the leadscrew to allow FarmBot to move in the Z direction.

Material Aluminum
Length 25mm
Outer Diameter 18mm
Inner Diameters 5mm and 8mm
Screws Stainless steel with 2mm hex drive
Price $6.00
Quantity 1
Internal Part Name 5mm to 8mm Shaft Coupler w/ SS Setscrews w/ 2mm drive
Vendor  
$/pc $1.60
Component Tests  
Notes v1.5 Production Run 2: screws had 2.5mm drive instead of 2mm. Need to fix next time so we can avoide adding extra hex key.

Leadscrew

This stainless steel leadscrew allows FarmBot to move in the Z direction.

Material Stainless Steel
Length 800mm
Diameter 8mm
Threads Tr8*8-2p (4 starts)
Pitch 2mm
Lead 8mm
Price $35.00
Quantity 1
Internal Part Name 8mm x 800mm SS ACME Leadscrew
Vendor  
$/pc $5.00
Component Tests  
Notes  

Leadscrew Block

This delrin block attaches to the cross-slide plate so that the leadscrew can move through it, allowing FarmBot to move in the Z direction.

Material Black delrin
Threads Tr8*8-2p (4 starts)
Pitch 2mm
Lead 8mm
Mounting Holes M5, 20mm apart
Length 34mm
Width 20mm
Thickness 12mm
Price $7.00
Quantity 1
Internal Part Name Leadscrew Block
Vendor  
$/pc $1.60
Component Tests  
Notes Future improvement: Remove hex and circular counterbores.