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6 mm D-Bore Single Boss Nub w/Set Screw
The nub is a series of hubs intended to connect motion components to spinning shafts, like sprockets gears, pulleys and wheels. It supports the output shaft of the AndyMark NeveRest motors as well ...Read More
Product Overview
The nub is a series of hubs intended to connect motion components to spinning shafts, like sprockets gears, pulleys and wheels. It supports the output shaft of the AndyMark NeveRest motors as well as the other motors on the market. It supports the AndyMark 6 mm D shafts for robust motion systems and impeccable torque transfer.
The four mounting holes on these nubs are sized at 0.128" diameter, with the intention of accepting a #6-32 threaded screw. They are not tapped, but can be tapped by most machine screws due to this diameter.
Specifications
- Bore: 6 mm D
- Height: 0.625 in.
- Length: 0.625 in.
- Material: 6105-T5 Aluminum
- Product Lifecycle: replaced by, <a href='/products/heavy-duty-hd-high-strength-threaded-nubs?sku=am-4308'>am-4308</a>
- Set Screw: Holes sized for 10-32 Set Screw (Set Screw Included)
- Weight: 0.05 lbs
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Returns
Returns are not accepted for this product.
Recommendations
8 reviews
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Good hubs but
These worked well for us, nice and compact, seem well made, but: - they are expensive for what they are / should be a pack of 2 at this $. - the corner holes aren’t threaded, so you have to tap them, use self-threading bolts or smaller size bolt/nut.
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Makes the wheels wobble
The 6mm holes are not perpendicular to the flats. AndyMark Response: If there are manufacturing issues with our parts please reach out to CustomerService@andymark.com and we can work to get any replacement parts as needed. Thanks Danny
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Review
4 Stars
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Team purchase
Prompt service, never late!
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Review
5 Stars
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Like a lot
Nice and secure fit.
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So close, yet so far
The nubs are a fantastic concept. The snug-fitting "D" shape orifice is a great improvement over Tetrix hubs for high-speed/high-torque applications as it prevents slippage and greatly reduces shaft damage. However, there is one fundamental issue and a couple other niggles that really detract : 1) ***The nubs are not square. One face of the nub is square to the orifice, the other face is slightly off. We replicated this with 4 different nubs on our high-speed shooter assembly. 2) The untapped open corner holes are not nearly as durable as the machined/tapped hubs from other suppliers. 3) The set screw contacts the round of the shaft rather than the flat as other users have noted. If there is shaft marring, we would rather have it on the flat of the shaft. AndyMark, Please, please, please update this great concept to a precise, machined component with tapped holes and more surface area for solid connection with the flat of the gear, wheel, etc. that it will be mounted to.
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"So close, yet so far"
"The nubs are a fantastic concept. The snug-fitting "D" shape orifice is a great improvement over Tetrix hubs for high-speed/high-torque applications as it prevents slippage and greatly reduces shaft damage. However, there is one fundamental issue and a couple other niggles that really detract : 1) ***The nubs are not square. One face of the nub is square to the orifice, the other face is slightly off. We replicated this with 4 different nubs on our high-speed shooter assembly. 2) The untapped open corner holes are not nearly as durable as the machined/tapped hubs from other suppliers. 3) The set screw contacts the round of the shaft rather than the flat as other users have noted. If there is shaft marring, we would rather have it on the flat of the shaft. AndyMark, Please, please, please update this great concept to a precise, machined component with tapped holes and more surface area for solid connection with the flat of the gear, wheel, etc. that it will be mounted to."
