The following table is from Sheldon Browns website. Measurements are center to center of bolt holes on adjacent holes on 5 arm alloy cranksets and
3 arm cottered vintage crank sets.
5 Bolt Cranks:
|
||||
---|---|---|---|---|
BCD (mm) |
SmallestRing |
Between adjacent holes(mm) |
Between non-adjacent holes (mm) |
Application |
151 |
44 |
88.8 |
143.6 |
Very old Campagnolo standard (pre ’67) (Obsolete) |
144 |
41 |
84.6 |
137.0 |
Old Campagnolo standard, still used for track applications. |
135 |
39 |
79.4 |
128.4 |
Current Campagnolo standard |
130 |
38 |
76.4 |
123.6 |
Standard Road double and triple (outer 2) |
128 |
38 |
75.2 |
121.7 |
Nervar Sport, Star (Obsolete) |
122 |
38 |
71.7 |
116.0 |
Stronglight 93, 101, 103, 104, 105 (Obsolete) |
118 |
36 |
69.4 |
112.2 |
Ofmega, SR (Obsolete) |
116 |
35 |
68.2 |
110.3 |
Old Campagnolo (Obsolete) |
110/112 |
34 |
64.7 |
104.6 |
Campagnolo CT inner/middle/outer with one bolt at larger diameter behind crank |
110 |
33 |
64.7 |
104.6 |
Touring double, standard triple outer |
100 |
31; 36 |
58.7 |
95.1 |
Merz adapter; Campagnolo triple (obsolete) |
94 |
29 |
55.4 |
89.4 |
Compact triple outer |
92 |
30 |
53.3 |
87.5 |
Shimano Dura-Ace triple inner |
90 |
32 |
52.9 |
85.6 |
Edco, Mavic triple inner (old) |
86 |
28 |
50.5 |
81.8 |
Stronglight 80, 99, 100, some SR triples. (Obsolete) |
85 |
28 |
50.0 |
80.8 |
Old Shimano Deore, Takagi triple inner. (Obsolete) |
74 |
24 |
43.5 |
70.4 |
Standard (“full-sized”) triple inner, used with 110 mm, 130 mm or 135 mm rings. |
58 |
20 |
34.1 |
55.2 |
Compact granny |
56 |
20 |
32.9 |
53.3 |
Sun Tour Compact granny (Obsolete) |
4 Bolt Cranks: |
||||
BCD (mm) |
SmallestRing |
Between adjacent holes(mm) |
Application |
|
146 |
44 |
103.2 |
Shimano XTR M960 Hollowtech 4-arm outer |
|
112 |
34 |
79.2 |
Shimano XTR M950, M952 4-arm middle/outer |
|
104 |
32 |
73.5 |
Shimano XTR M960, XT, LX 4-arm outer |
|
102 |
32 |
72.1 |
Shimano 2003 XTR 4-arm middle |
|
68 |
22 |
48.1 |
Shimano XTR M950, M952 4-arm inner |
|
64 |
22 |
45.3 |
Shimano XTR M960, XT, LX 4-arm inner |
|
58 |
20 |
41.0 |
Sugino MX350 4-arm inner |