The 2 Motor Drivetrain Gearbox - Through Bore Bundle contains the REV-21-2190 base kit, the 20DP Gears needed for a 6in wheel ratio, and 20DP NEO Pinions Gears (10T, 11T, 12T) for multiple speed options. If a 4in or 5in wheel gear ratio is needed, individual gears can be purchased to obtain the correct ratio. Motors not included.
This gearbox is compatible with the REV ION System and can be mounted in a variety of options, including flush with tube or spaced away from the tube to enable both chain in tube and chain/belt outside tube designs. The user can adjust speed by switching pinion gears on the motor between 10T, 11T, 12T, or can adjust wheel size by switching 2nd stage gear pairs.
2 Pairs of 2in pitch #10-32 tapped holes are available on the output shaft for mounting the REV Through Bore Encoder, and mount holes for the gearbox are on the same horizontal plane as the output, set 4 inches apart. The output shaft is 1/2in Hex through bore, and output gears have a MAXSpline bore.
Specifications
- Material: AL 6061 Plates with steel gears
- Weights:
- 4in Wheel Ratio: 1.72 lbs
- 5in Wheel Ratio: 1.75 lbs
- 6in Wheel Ratio: 1.61 lbs
Kit Contents
| SKU | PRODUCT NAME | QUANTITY |
| 2 Motor Drivetrain Gearbox Motor Plate | QTY 1 | |
| 2 Motor Drivetrain Gearbox Output Plate | QTY 1 | |
| 2 Motor Drivetrain Gearbox 1/2in Hex Cluster Shaft | QTY 1 | |
| REV-25-2489 | 2 Motor Drivetrain Gearbox Spacer Pack | QTY 1 |
| REV-25-2488 | 2 Motor Drivetrain Gearbox Hardware Pack | QTY 1 |
| REV-21-2079 | 1/2in Hex Through Bore Shaft | QTY 1 |
| REV-21-2819 | 1/2in Rounded Hex Shaft - 6.0in Long - Tapped | QTY 1 |
| REV-21-1916-PK2 | Flanged Bearing for 1/2in Rounded Hex - 2 Pack | QTY 1 |
| REV-21-1937 | 20DP Gear - 1/2in Hex - 52T | QTY 1 |
| Bearing, 30mm ID, 42mm OD, 7mm Thick, Shielded, Flanged - 2 Pack | QTY 1 | |
| REV-21-1926 | 20DP Gear - 1/2in Hex - 30T (for 6in Wheel Gear Ratio) | QTY 1 |
| REV-21-3028 | 20DP Gear - MAXSpline - 68T (for 6in Wheel Gear Ratio) | QTY 1 |
| REV-21-1998-PK2 | 20DP NEO Pinion Gear - 10 Tooth - 2 Pack (for Speed Option - Slow) | QTY 1 |
| REV-21-1999-PK2 | 20DP NEO Pinion Gear - 11 Tooth - 2 Pack (for Speed Option - Medium) | QTY 1 |
| REV-21-2000-PK2 | 20DP NEO Pinion Gear - 12 Tooth - 2 Pack (for Speed Option - Fast) | QTY 1 |
Additional Options for Wheel Gear Ratios *the following products are not included in the bundle
The 2 Motor Drivetrain Gearbox - Through Bore Bundle contains the gears needed for a 6in wheel gear ratio as well as the pinions for slow, medium, and fast speed options. If a 4in or 5in wheel gear ratio is needed, refer to the table below to help purchase the individual gears below needed to obtain the correct ratio:
4in Wheel Gear Ratio:
| SKU | PRODUCT NAME | QUANTITY |
| REV-21-1931 | 20DP Gear - 1/2in Hex - 40T | QTY 1 |
| REV-21-3023 | 20DP Gear - MAXSpline - 58T | QTY 1 |
5in Wheel Gear Ratio:
| SKU | PRODUCT NAME | QUANTITY |
| REV-21-1928 | 20DP Gear - 1/2in Hex - 34T | QTY 1 |
| REV-21-3026 | 20DP Gear - MAXSpline - 64T | QTY 1 |
Documentation
- ION Build System Guide
- 2 Motor Drivetrain Gearbox - Through Bore Specifications
- 2 Motor Drivetrain Gearbox - Through Bore Build Guide
