U.S. Tsubaki RS25 bushed chain is the smallest ANSI roller chain. It is ideal for power transmission in business machines, electro-optical equipment, and precision and general industrial machines where relatively large space is allowed for miniature drives.
These chains can accommodate a large allowable load and are widely used for driving motorcycle cam shafts and power transmission machinery in general.
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Item #

Chain Type 

ANSI No.

P - Pitch

B - Bushing Diameter

W - Width Between Roller Link Plates

T

N/A Rollerless N/A 25 N/A 0.250 in N/A 0.130 in N/A 0.125 in N/A 0.030 in
N/A Rollerless N/A 25 N/A 0.250 in N/A 0.130 in N/A 0.125 in N/A 0.030 in
N/A N/A N/A 0.250 in N/A 0.130 in N/A 0.125 in N/A 0.039 in
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