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The 3CIM4U product line has been discontinued.

Price: $85.00

3CIM4U Ratio*:

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The 3CIM4U line of gearboxes has been discontinued.

Product Overview:
The 3CIM Toughbox gearbox builds off the reliability and durability of the Toughbox. The 3CIM4U further builds off of that line by providing 3 motor single speed capabilities as a drop in option for the AM14U family of chassis. This gearbox can accept up to three (3) motors. These motors can be CIM Motors or other motors attached to the AM Planetary gearbox. This gearbox is shipped in kit form, not assembled. CIM Motors (am-0255) are not included with this gearbox.

3CIM4U Specifications:
  • Plate Material: 6061 Aluminum
  • Gear Material: 4140 Steel
    • Aluminum 6061 Gears Available for Some Ratios
  • Shaft Material: 4140 Steel
  • Height: 5.5"
  • Length: 5.0"
  • Gearbox Depth: 1.507"
  • Gearbox and Shaft Depth: 5.132"
  • Gearbox Depth with CIMs: 9.832"
  • Weight: ~2.8 Pounds
Individual Hardware Shipped for All Ratios:
Individual Hardware Shipped for the 12.75:1 Ratio:
Individual Hardware Shipped for the 10.71:1 Ratio:
Individual Hardware Shipped for the 8.45:1 Ratio:
Individual Hardware Shipped for the 7.31:1 Ratio:
Individual Hardware Shipped for the 5.95:1 Ratio:

Gears Included in Each Ratio:
Ratio CIM Large Cluster Small Cluster Output
12.75:1 14T (am-0034) 50T (am-0149) 14T (am-0151) 50T (am-0150)
10.71:1 14T (am-0034) 50T (am-0149) 16T (am-0747) 48T (am-0885)
14T (am-0034) 50T (am-0149) 19T (am-0176) 45T (am-0179)
14T (am-0034) 50T (am-0149) 21T (am-2564) 43T (am-2565)
14T (am-0034) 50T (am-0149) 24T (am-0177) 40T (am-0178)

Weight Reduction with Optional Aluminum Gears
Ratio CIM Large Cluster Small Cluster Output Weight Reduction
12.75:1 14T (am-0034) 50T (am-0143) 14T (am-0151) 50T (am-0521) 0.56 lbs
10.71:1 14T (am-0034) 50T (am-0143) 16T (am-0747) 48T (am-2036) 0.55 lbs
8.45:1 14T (am-0034) 50T (am-0143) 19T (am-0176) 45T (am-2035) 0.51 lbs

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.

Aluminum Hex Output Shafts:
This gearbox can use a long hex aluminum output shaft, but this shaft is longer than the standard shaft and will most likely need to be cut down in length.

Product Usage:
All AndyMark gearboxes require grease for proper operation and long life. We suggest using our red tacky grease, am-2768. We also encourage that the user powers the gearbox continuously for 30 minutes without grease to allow the gear teeth to wear in. While we do design with short run times in mind, this 'run in' period for smooth gearbox operation, is recommended. Once this is completed, thoroughly grease the gear teeth periodically to ensure smooth operation.

Average Customer Review: 5 of 5 Total Reviews: 1 Write your own review!

  0 of 0 people found the following review helpful:
Outstanding product and service. March 8, 2017
Reviewer: Rick Bowersox from Las Vegas, NV United States  
Your staff provided outstanding help on several technical orders.

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