Drivetrain
Tech specs for the drivetrain components in FarmBot Genesis. Visit our shop to purchase parts.
| 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. |
