Hubs Track Madison bright
$93.18 USD
Rear hubs , double thread .- Trabocchi mechanizes these components starting from aluminium 6061 round bars whth a metal section of 71 mm . The hub housings go through four different processes of mechanization before being finished,resulting in a bright polishing with 6000ZZ sealed and armored roller bearings, providing lightness and smoothness when turning Rearward flange is 70mm, the rear frame spacing is120 mm , thread of 35mm X 24 TPI for freewheels . For fixed, thread is 1.375 inch X 24 TPI chain line. Lock thread left ISO 33mm (1.299” pulgadas) x 28 tpi. .Also available threaded free pinion of 14 or 15 teeth 30mm X 26 TPI
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Bearings to roller : Bearings 6000ZZ |
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The groove ball bearings are mostusual and especially versatile. They have low friction and are optimized for low noise level and low vibration,which allows high turning speed.Also they endure radial and axial loads both ways, are easy to assemble and need less maintenance than amy other bearing types. |
Technical specifications
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Housing material |
Aluminium 6061 polished (Finished) |
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Shaft Material |
Siemens Steel 1045 , Front: thread diameter 9mm thread pitch 1 (TPI) Rear: thread diameter 10mm, thread pitch 1 (TPI) |
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Bearing coverage material |
Aluminium 6061 bright polished |
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knurled lockring nut material |
Stainless Stell (AISI 304) |
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Lockring Material |
Stainless Stell (AISI 304) |
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Limit total cyclist weight |
120 kilograms ( 264,60 libras) |
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Rear hubs fixed – fixed weight |
330grams (0,727 libras ) |
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Rear hubs fixed - free gear weight |
320 grams (0,705 libras) |
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Rear hubs weight free gear – free gear 15 (thread free gear cog 15 ring gear) |
310 grams (0,683 libras) |
