Components - Shimano Bottom Brackets
Shimano bottom brackets on this page: Dura Ace 7400 English | XTR UN91 68 x 113 English | 600EX English | 600 6400 English | 600 D-5LL Italian | D-3A 68c117.5 spindle with Hatta sealed English-threaded cups | 105 5800/Ultegra Italian | 6800 Hollowtech Italian | DH 3NL 68 x 113mm English |
Individual Shimano spindles & cups can be found here
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In 1921 Shozaburo Shimano began making one-speed freewheels. Already Japan had a vigorous bicycle industry and despite a temporary shutdown in 1929 caused by the great depression, by 1939 Shimano was making more than a million freewheels a month. From that start, Shimano has now become a multinational manufacturer of not only bicycle components, but also fishing tackle and other sporting goods.
But it is bicycle equipment that drives the company. In 2013 Shimano had sales of 2.6 billion U.S. dollars. And bicycle components were 75% of the firm's business. It is thought that Shimano production constitutes about half of all the world's bicycle component sales.
For the past thirty years, Shimano had striven to stay on the cutting edge of cycling technology and consistently maintains a high standard of quality control.
Shimano Dura Ace 7400 English bottom bracket (68mm spindle w/ cups 1.37 x 24)
- This bottom bracket was produced 1985 - 1992.
- Cups are stamped "NJS", meaning they have been approved by the Japanese Keirin association.
- Spindle length is 113mm
- Cups have O-ring spindle seals.
We have two: Dura Ace 7400 BB #1 | #2
Shimano Dura Ace 7400 English bottom bracket (68mm spindle w/ cups 1.37 x 24) #1. Used, $75.00
Part# BB-32-01
Square taper, JIS. Shimano says this is pre-1994 Campagnolo compatible.
This is what's included: cups, lock ring and spindle.
The bearing surfaces are in wonderful condition. Smoooooth.
Shimano Dura Ace 7400 English bottom bracket (68mm spindle w/ cups 1.37 x 24) #2. Used, $75.00
Part# BB-32
It has come down through the years in wonderful condition
And put together.
Shimano XTR UN91 68 x 113 English bottom bracket with alloy cups & hollow cromoly spindle. Lightly used, $80.00/each
The bottom bracket.
Drive-side end view
Non-drive side end view
Shimano 600EX English bottom bracket. 68mm spindle w/ English threaded cups (1.37 x 24). Used, $70.00
Shimano 600EX bottom brackets were produced in the mid-1980s. The cups have seals that generally keep water from getting into the bearings.
We have two 600EX English bottom brackets: 600EX BB #1 | 600EX BB #2
600EX English bottom bracket #1: used, $70.00
Part# BB-30-01
Spindle length: 116mm
All the bearing surfaces are in great condition.
The 600EX bottom bracket did not come with a protective sleeve. We've added this Sugino sleeve to further protect the bearings.
600EX English bottom bracket #2. Used, $70.00
Part# BB-30-02
Spindle length: 116mm
Ours is in great condition, with nice smooth bearing surfaces. We have high-quality bearings in stock for this bottom bracket.
The "VIA" seen on this spindle, and all Shimano parts, stands for "Vehicle Inspection Authority". It certifies compliance with certain Japanese quality standards.
Exploded view showing the smooth bearing surfaces
Shimano 600 6400 English-threaded 68 x 113mm bottom bracket. Used, $65.00
The cups have seals.
Here are the cups flipped over to show their bearing surfaces.
Shimano 600 D-5LL Italian-threaded 70 x 119mm bottom bracket. Used, $70.00/set
Cups are 36mm x 24tpi.
Here's the bottom bracket, complete.
Close-up of the center section of the spindle, showing some of its specs.
The spindle rotated 180 degrees, showing the rest of its specs.
The spindle's left bearing surface, which can only be described as wonderful.
The right side, just as nice.
The cups, almost new.
Thecups' outseides.
Shimano D-3A 68 x 117.5mm spindle with Hatta sealed English-threaded cups. Used, $50.00
Plating on left end of the spindle is peeling.
You can see the plating that has peeled on the left side of the spindle.
We've rotated the spindle.
Another rotation of the spindle shows the model name and that it is made of CrMoly steel.
End view of the non-drive side. You can see that the cup is made by Hatta.
Here's the drive side.
Close-up of the plating difficulty
From a different angle
105 5800/Ultegra 6800 Hollowtech Italian bottom Bracket. New, $30.00
- This was taken off a new bike, hence a few shop-wear marks
Shimano DH 3NL 68 x 113mm English-threaded bottom bracket. Used, $50.00
The cups have seals.
Here are the cups flipped over to show their bearing surfaces.
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