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VersaHub (1/2" Round w/ 1/8" Keyway)

 VersaHub (1/2" Round w/ 1/8" Keyway)

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  • VersaHub (1/4" Round Bore no Keyway)
  • VersaHub (1/2" Hex)
  • VersaHub (1.125" Bearing Pilot, 1/2" Thick, w/ Plate Sprocket Mount)
  • VersaHub (1/2" Round w/ 1/8" Keyway)
  • VersaHub (1/2" Round w/ 1/8" Keyway)
  • VersaHub (1.125" Bearing Pilot, 1/4" Thick, w/ Plate Sprocket Mount)
  • VersaHub (1/2" Hex)

VersaHubs

VEXpro VersaHubs provide frustration-free torque transfer between wheels, gears, sprockets, and shafts.

Got a 1/2" Hex that you need to put a plate sprocket on? No problem. Need to mount a 64-tooth gear to your Mecanum Wheel? We can do that. Whatever your need, these hubs will help you integrate everything together seamlessly.

Most of the wheels and sprockets that teams typically use (including the previous generation of VEXpro wheels) don't take piloting into account. We wanted to make sure that everything pilots correctly... every time. Wheels, hubs, gears, sprockets… they all work together.

VersaHubs include the innovative VersaKey mounting system -- VersaKeys transfer torque between coaxial items, and also ensure everything is piloted correctly.

Product Name P/N: Availability Price Qty
VersaHub (1/2" Hex, Plastic) 217-4009
In stock
$2.99
VersaHub (1/4" Round Bore no Keyway) 217-3237
Out of stock
$7.99
 
VersaHub (1/2" Hex) 217-2592
Out of stock
$8.99
 
VersaHub (1/2" Round w/ 1/8" Keyway) 217-2590
In stock
$8.99
VersaHub (1.125" Bearing Pilot, 1/2" Thick, w/ Plate Sprocket Mount) 217-2591
In stock
$2.99
VersaHub (1.125" Bearing Pilot, 1/4" Thick, w/ Plate Sprocket Mount) 217-3234
In stock
$2.99
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VersaHub Application Examples - Click to Expand All

About VersaHubs & the VersaKey Pattern (click to expand)

All VEXpro "Versa" products have the innovative VersaKey mounting system with holes that makes it easy to mount wheels to sprockets, gears, shafts, and bearings. The pattern pilots items together without relying on screws. There are 6x 8-32 screws on a standard 1.875” bolt circle. There are 3x male and female keys on each side that transfer torque and pilot items together.


Using VersaHubs with VEXpro Wheels (click to expand)

VEXpro VersaHub Assembly with Mecanum Wheel

VEXpro 6" and 8" Mecanum Wheels include the VersaKey pattern and require a 1/2" Sprocket Mount VersaHub to achieve proper wheel clearance when driven with chain.

VEXpro VersaHub Assembly with Traction Wheel

Traction Wheels have a recessed VersaKey pattern, requiring a 1/4" Sprocket Mount VersaHub to provide proper clearance for gears, sprockets, or VersaPulleys.



VEXpro VersaHub Assembly with VersaWheel and VersaPulley

VersaWheels and VersaWheel DTs mount directly to VersaKey gears, sprockets, or VersaPulleys. A VersaHub (1/2” Hex, Plastic) can be used to drive the assembly through a live axle.

VEXpro VersaHub Assembly with Colson Performa Wheel

A 1/2" Hex VersaHub can be used to properly pilot between a wheel with a hex bore and a sprocket, gear, or other VersaKey interface.


Mounting Two Plate Sprockets on the Same Shaft (click to expand)

If chain is being run on two sprockets of the same shaft (such as you would find in the center shaft of a 6-wheel drive), care must be taken to ensure proper chain clearance. For #25 chain, a 1/4" Sprocket Mount VersaHub can be used to achieve a compact package if the two master links are mounted on the "outside" of the chain run. For #35 chain, a 1/2" Sprocket Mount VersaHub is an ideal solution regardless of master link orientation.

Using a Sprocket Mount VersaHub between two #25 Sprockets Using a Sprocket Mount VersaHub between two #35 Sprockets

Plastic 1/2" Hex VersaHub - A Lightweight Solution (click to expand)

Traction Wheel Captured by Two VersaHubs

The best way to properly support and capture a wheel is with a VersaHub (1/2" Hex) on one side and a VersaHub (1/2" Hex, Plastic) on the other. The aluminum hub handles torque transfer from the axle to the wheel, while the plastic hub on the other side supports the wheel without adding much weight. A standard (or ThunderHex) bearing can also be used in place of a plastic VersaHub.


Using a VersaHub and VersaBlock to Drive Mechanisms (click to expand)

Since VersaKeys efficiently transfer torque while perfectly piloting gears or other hardware, VersaHubs can even be used to manipulate larger VersaFrame mechanisms. The VersaBlock includes a female VersaKey pattern which interfaces with driven rotary motion (such as a sprocket and chain) through a Sprocket Mount VersaHub. This technique was used in Team Copioli’s 2014 Build Blitz Robot and in the 2015 Build Blitz Simple Stacker.

Using a VersaHub and VersaBlock to Drive a VersaFrame Mechanism

Using Sprocket Mount VersaHubs as Spacers (click to expand)

VersaHubs Used on the Team Copioli Build Blitz Robot

Since the 1/4" and 1/2" Sprocket Mount VersaHubs feature both male and female VersaKeys on all sides, they can be used as spacers or to create a rotating drum between two other VersaKey products. Team Copioli's 2014 Build Blitz robot utilized this feature on its intake roller.


Creating Your Own VersaHubs (click to expand)

While 1/2" hex is quickly becoming a common standard in competition robotics, we understand that many teams still use other axle options such as keyed shaft or other hex sizes. The 1/4” Round Bore VersaHub is designed with those teams in mind – simply broach, bore, or drill the center hole to your desired size and enjoy the advantages of the VersaKey system.

Creating Your Own VersaHubs

Mounting Hardware Guide

  • Mounting (1) Keyed or Hex VersaHub - 1/4" or 3/8" long screw
  • Mounting (1) Plate Sprocket and (1) Sprocket VersaHub - 1" or 1.25" long screw
  • Mounting (2) Plate Sprockets and (2) Sprocket Versahubs - 1.5" or 1.75" long screw

Technical Specifications

Specification Mounting Holes: (6) #8 clearance holes on a 1.875" bolt circle
Material Type 217-3237 (VersaHub 1/4" Round Bore no Keyway): 7075 T6 Aluminum
217-2592 (VersaHub 1/2" Hex Bore): 7075 T6 Aluminum
217-2590 (VersaHub 1/2" Round w/ 1/8" Keyway): 7075 T6 Aluminum 217-2591 (VersaHub 1.125" Bearing Pilot, 1/2" Thick, w/ Plate Sprocket Mount): Glass-Filled Nylon
217-2591 (VersaHub 1.125" Bearing Pilot, 1/4" Thick, w/ Plate Sprocket Mount): Glass-Filled Nylon
CAD Model 217-4009 (VersaHub 1/2” Hex, Plastic) (STEP)
217-2590 (VersaHub 1/2" Round w/ 1/8" Keyway) (STEP)
217-2591 (VersaHub 1.125" Bearing Pilot w/ Plate Sprocket Mount) (STEP)
217-2592 (VersaHub 1/2" Hex) (STEP)
217-3234 (VersaHub 1.125" Bearing Pilot 1/4" Thick) (STEP)
217-3237 (VersaHub 1/4" Round Bore no Keyway) (STEP)
Drawing 217-4009 (VersaHub 1/2” Hex, Plastic) (PDF)
217-2590 (VersaHub 1/2" Round w/ 1/8" Keyway) (PDF)
217-2591 (VersaHub 1.125" Bearing Pilot w/ Plate Sprocket Mount) (PDF)
217-2592 (VersaHub 1/2" Hex) (PDF)
217-3237 (VersaHub 1/4" Round Bore no Keyway) (PDF)
217-3234 (VersaHub 1.125" Bearing Pilot 1/4" Thick) (PDF)
Weight 217-3237 (VersaHub, 1/4" Round Bore no Keyway): 0.07 lb
217-2592 (VersaHub, 1/2" HEX): 0.072 lb
217-2590 (VersaHub, 1/2" Round w/ 1/8" Keyway): 0.074 lb
217-2591 (VersaHub, 1.125" Bearing Pilot, 1/2" Thick, w/ Plate Sprocket Mount): 0.04 lb
217-3234 (VersaHub, 1.125" Bearing Pilot, 1/4" Thick, w/ Plate Sprocket Mount): 0.03 lb
 

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