U.S. TSUBAKI STOCK SPROCKETS
Steel Split Sprockets
Steel Split Hub
Dimensions are in inches unless otherwise indicated.
Hub
Hub O.D.
Hub
Wt. Lbs.
Number
Bore
Length
Bolts
S-1B S-2B S-3B S-4B S-5B S-6B
3 ⁄
4 — 1 8 — 2
1 ⁄ 1 ⁄
³⁄₈ x 2¹⁄₄ ¹⁄₂ x 3 ⁵⁄₈ x 4¹⁄₂ ³⁄₄ x 5¹⁄₂ 1 x 6 1 x 6¹⁄₂
1.80 4.00 8.40
3¹⁄₈ 4³⁄₈ 6
1 1¹⁄₄ 1³⁄₈ 1¹⁄₂ 2 2¹⁄₄
2
1 3 ⁄
4
2 — 3
2 3 ⁄ 3 3 ⁄ 14.40 27.70 35.40 NOTE: Length through bore can be determined by adding plate thickness to hub length. (All dimensions in inches.) 4 — 4 4 — 5 4 3 ⁄ 4 — 6 7⁵⁄₈ 9¹⁄₄ 10¹⁄₄
Sprocket Size for Instant Hubs
Dimensions are in inches unless otherwise indicated.
Minimum Number of Teeth Chain Number
Hub Number
40 28 38 46
50 23 30 37 48
60 20 26 32 40
80 16 20 25 30
100
120
140
160
180
200
240
Bore
S-1B S-2B S-3B S-4B S-5B S-6B
— — — — — — —
³⁄₄ — 1¹⁄₂ 1³⁄₈ — 2¹⁄₄ 2 — 3
17 20 25 30 32
15 18 21 25 27
14 16 19 22 24
— — — —
15 17 20 22
14 16 18 19
— —
15 17 18
12 14 15
2³⁄₄ — 4 3³⁄₄ — 5 4³⁄₄ — 6
C-65
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