Toughbox am-0145

Official 2010 FIRST Kit of Parts Gearbox

This gearbox is shipped unassembled.

The CIM Motor is NOT INCLUDED with this gearbox.

Toughbox accepts two (or one) 2.5 inch CIM Motors provided in the FIRST Kit of Parts. Hardware is included for attaching two of these motors.

Specifiaction

• Overall Ratio: 12.75:1 (standard)
• Gear material: 4140 steel
• Gear type: spur gears, 20 dp, 14.5 degree pressure angle
• Motor mount plate material: polycarbonate
• Body Extrusion and Shaft Plate material: aluminum
• Output shaft: 1/2 inch diameter, with 1/8" keyway, 4140 steel
• Weight: 2.5 pounds
• Input Gear: CIM Gear, 14 tooth, 0.315 inch bore w/ 2mm keyway
  
• Large Cluster Gear: 50 tooth, 3/8 inch hex bore
  
• Small Cluster Gear: 14 tooth, 3/8 inch hex bore
  
• Large Output Gear: 50 tooth, 1/2 inch hex bore

Optional gear ratios

(the standard gear ratio is 12.75:1)

• Optional Ratio 1: 5.95:1, using the 40 Tooth Output Gear and the 24 Tooth Cluster Gear
• Optional Ratio 2: 6.94:1, Use the optional Mount Plate and a 12 tooth CIM gear, and then use the 40 Tooth Output Gear and the 24 Tooth Cluster Gear
• Optional Ratio 3: 8.45:1, using the 45 Tooth Output Gear and the 19 Tooth Cluster Gear
• Optional Ratio 4: 9.87:1, Use the optional Mount Plate and a 12 tooth CIM gear, and then use the 45 Tooth Output Gear and the 19 Tooth Cluster Gear
• Optional Ratio 5: 14.88:1, Use the optional Mount Plate and a 12 tooth CIM gear, with standard cluster and output gearing.

Weight reduction with optional parts

By using optional parts, a weight reduction of 0.85 lbs. is available.

• 4 of the 1.14 Inch Spacers can replace the standard aluminum box extrusion.
  
• Aluminum Large Cluster Gear can replace the standard steel 50 Tooth Large Cluster Gear.
• Aluminum Large Output Gear can replace the standard steel 50 Tooth Large Output Gear.

Additional encoder

An optional Encoder Package can be purchased and added to this Toughbox. If you already have a US Digital Encoder to fit this Toughbox, this Encoder Mount Pad will help you mount the encoder to the Toughbox. A very complete guide for encoder installation and alignment is shown on the Encoder Package page.

Optional Long Output Shaft

T-Box Long Output Shaft is available, which is 3.5 inches longer than the standard Output Shaft.
T-Box Long Output Shaft CAD .stp file (Right Click, Save As)

Printable Assembly Instructions

Toughbox User Guide .pdf file, w/ assembly instructions and BOM

Aluminum Hex Output Shafts

The Toughbox can use a hex aluminum output shaft and a long hex aluminum output shaft, but a FR8ZZ-Hex bearing must be ordered to replace the FR8ZZ bearing supporting the output shaft.

Layout Drawing

Toughbox-Asm.pdf 1-page .pdf assembly layout file

CAD File

Toughbox CAD File (.stp) 1.2mb (right click, Save As)

Video of Assembly Instructions

Toughbox Assembly Video (right click, Save As)