Page 4 of Sprocket Catalog by U.S. Tsubaki

no 25 sprocket diameters no teeth outside pitch diameter diameter 1 u.s tsubaki sprockets 1/4 pitch plain bore dimensions are in inches unless otherwise indicated type a /4 pitch caliper diameter catalog number list price plain bore wt lbs catalog number list price type b plain bore max bore hub dia wt lbs ltb 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 28 30 32 35 36 40 45 48 54 60 72 .837 .919 1.001 1.083 1.164 1.245 1.326 1.407 1.487 1.568 1.648 1.728 1.809 1.889 1.969 2.049 2.129 2.209 2.369 2.529 2.688 2.928 3.008 3.327 3.725 3.964 4.442 4.920 5.876 .731 .809 .887 .966 1.045 1.123 1.203 1.282 1.361 1.440 1.519 1.598 1.677 1.757 1.836 1.915 1.995 2.074 2.233 2.392 2.551 2.789 2.868 3.186 3.584 3.822 4.300 4.777 5.731 .590 .679 .748 .836 .907 .994 1.066 1.152 1.225 1.310 1.384 1.468 1.543 1.627 1.702 1.785 1.861 1.944 2.103 2.262 2.421 2.656 2.738 3.056 3.452 3.692 4.170 4.647 5.601 25a18 25a19 25a20 25a21 25a22 25a23 25a24 25a25 25a26 25a28 25a30 25a32 25a35 25a36 25a40 25a45 25a48 25a54 25a60 25a72 $21.00 21.20 21.20 21.40 21.60 22.00 22.20 22.60 23.20 24.00 24.00 28.60 29.40 29.60 30.40 31.20 31.80 33.00 34.00 36.20 ¹ ¹ ¹ ¹ ¹ ¹ ³ ³ ³ ³ ³ ³ ³ ³ ³ ¹ ¹ ¹ ¹ ¹ .04 .04 .04 .04 .06 .06 .08 .08 .09 .10 .12 .14 .16 .18 .20 .25 .32 .38 .54 .74 25b9 25b10 25b11 25b12 25b13 25b14 25b15 25b16 25b17 25b18 25b19 25b20 25b21 25b22 25b23 25b24 25b25 25b26 25b28 25b30 25b32 25b35 25b36 25b40 25b45 25b48 25b54 25b60 25b72 $16.00 16.40 16.80 17.40 18.20 18.60 18.60 19.20 19.60 20.40 20.40 21.00 21.80 22.20 23.20 24.40 24.80 25.80 28.00 29.80 32.40 34.20 36.60 41.80 45.80 49.40 54.80 60.60 72.60 ³ ³ ³ ¹ ¹ ³ ²¹ ³ ¹³ ¹ 1 1 1 1 1 1 1 1 1 1¹ 1¹ 1¹ 1¹ 1¹ 1¹ ¹ ²³ ¹³ ³¹ 1¹ 1¹ 1 1 1³ 1 1¹ 1¹ 1¹ 1¹ 1¹ 1¹ 1¹ 1¹ 1¹ 2 2 2 2 2 2 ¹ ¹ ¹ ¹ ¹ ¹ ¹ ¹ ¹ ¹ ¹ ³ ³ ³ ³ ³ ³ ³ .03 .04 .05 .06 .07 .08 .10 .12 .14 .16 .19 .25 .28 .31 .32 .33 .34 .35 .37 .39 .41 .46 .49 .52 .55 .57 .98 1.10 1.30 see current discount sheet for alteration charges dimensions shown allow for standard keyway with set screw at 90° chain technical data size 25 pitch ¹ inside width ¹ roller diameter .130 4 type a type b

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