Square taper bottom brackets are interchangeable, with the Japanese Industrial Standard (JIS) being commonly used in Asia.
However, the European made ISO square taper spindles are slightly longer, tapering down to a small end than the JIS spindles.
Different types of bottom brackets are available, including English, BSA, Italian, French, Swiss, ISO/JIS, and threadless standards.
The different types of BB shells, threading, and BBs are also available.
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J.I.S. is the Japanese Industrial Standard, and is generally used on square taper cranks made in Asia. All of the common black spindles identified with standard numbering use the J. I. S. taper. Many of these have a threaded boss for a nut on each end, rather than being hollow and threaded internally for a bolt.
Square Taper Bottom Bracket Interchangeability - Sheldon Brown
Are JIS and ISO Taper Bottom Brackets Compatible? Whilst both versions of the square taper Bottom Bracket look the same, the European made ISO square taper spindles are slightly longer, tapering down to a small end than the Japanese Industry Standard (JIS) Bottom Bracket spindles do.
Square Taper JIS/ISO Bottom Brackets from Velodrome Shop
This guide provides an overview of the different types of bottom brackets available, including English, BSA, Italian, French, Swiss, ISO/JIS, and threadless standards. It explains the differences between the different types of bottom brackets, such as ISO/JIS, and the different types of BB shells, as well as the different types of threading available. It also provides information on the different types of BB shells, the different types of threading, and the different types of BBs available.
Bottom Bracket Basics - Velo Orange
There are two common tapers: JIS : The old French standard, copied by the Japanese. Most Japanese cranks (but not all) and most older French cranks use this taper . René Herse…
Bottom Brackets Demystified – Rene Herse Cycles
The Miche Primato Bottom Bracket Unit is primarily for use with the Miche Primato Advanced Pista Chainset. Miche's cartridge bottom bracket with sealed bearings is compatible with most Square Taper …
Miche Primato Bottom Bracket from Velodrome Shop