Spur Gears: 6 Diametral Pitch Ratings

14-1/2° and 20° Pressure Angle*

1-1/2″ Face

Steel Spur Gears with Hubs

Number of Teeth Pitch diameter Outside Diameter Stock Bore Maximum Bore Hub Diameter Hub Projection Style Catalog Number
14-1/2° P.A. 20° P.A.
11†◊ 2.000 2.333 1″ 1-1/16″ 1-9/16″ 7/8″ Plain ST-611 TST-611
11† 2.000 2.333 1″ 1-1/16″ 1-1/2″ 7/8″ Plain ST-611-B TST-611-B
12◊ 2.000 2.333 1″ 1-1/16″ 1-9/16″ 7/8″ Plain ST-612 TST-612
12 2.000 2.333 1″ 1-1/16″ 1-1/2″ 7/8″ Plain ST-612-B TST-612-B
14◊ 2.333 2.666 1″ 1-1/16″ 1-5/8″ 7/8″ Plain ST-614 TST-614
14 2.333 2.666 1″ 1-1/16″ 1-13/16″ 7/8″ Plain ST-614-B TST-614-B
15 2.500 2.833 1″ 1-5/16″ 2″ 7/8″ Plain ST-615 TST-615
16◊ 2.666 3.000 1″ 1-1/2″ 2-3/16″ 7/8″ Plain ST-616 TST-616
16 2.666 3.000 1″ 1-1/2″ 2-5/32″ 7/8″ Plain ST-616-B TST-616-B
18 3.000 3.333 1″ 1-11/16″ 2-1/2″ 7/8″ Plain ST-618 TST-618
20◊ 3.333 3.666 1″ 1-11/16″ 2-1/2″ 7/8″ Plain ST-620 TST-620
20 3.333 3.666 1″ 1-11/16″ 2-27/32″ 7/8″ Plain ST-620-B TST-620-B
21◊ 3.500 3.833 1″ 1-3/4″ 2-5/8″ 7/8″ Plain ST-621 TST-621
21 3.500 3.833 1″ 1-3/4″ 3″ 7/8″ Plain ST-621-B TST-621-B
22~ 3.666 4.000 1″ 1-3/4″ 2-5/8″ 7/8″ Plain ST-622 TST-622
24~ 4.000 4.333 1″ 1-15/16″ 2-7/8″ 7/8″ Plain ST-624 TST-624
27~ 4.500 4.833 1″ 2″ 3″ 1″ Plain ST-627 TST-627
28~ 4.666 5.000 1″ 2″ 3″ 1″ Plain ST-628 TST-628
30~ 5.000 5.333 1″ 2-1/16″ 3-1/8″ 1″ Plain ST-630 TST-630
32~ 5.333 5.666 1″ 2-1/16″ 3-1/8″ 1″ Plain ST-632 TST-632
33~ 5.500 5.833 1″ 2-3/16″ 3-1/4″ 1″ Plain ST-633 TST-633
36~ 6.000 6.333 1″ 2-3/16″ 3-1/4″ 1″ Plain ST-636 TST-636

Cast Iron Spur Gears with Hubs

Number of Teeth Pitch diameter Outside Diameter Stock Bore Maximum Bore Hub Diameter Hub Projection Style Catalog Number
14-1/2° P.A. 20° P.A.
22~ 3.666 4.000 1″ 1-7/16″ 2-1/2″ 1″ Plain IS-622 TIS-622
24~ 4.000 4.333 1-1/8″ 1-7/16″ 2-1/2″ 1″ Plain IS-624 TIS-624
27~ 4.500 4.833 1-1/8″ 1-7/16″ 2-1/2″ 1″ Web IS-627 TIS-627
30~ 5.000 5.333 1-1/8″ 1-7/16″ 2-1/2″ 1″ Web IS-630 TIS-630
32~ 5.333 5.666 1-1/8″ 1-7/16″ 2-1/2″ 1″ Web IS-632 TIS-632
33~ 5.500 5.833 1-1/8″ 1-11/16″ 3″ 1″ Web IS-633 TIS-633
36~ 6.000 6.333 1-1/8″ 1-11/16″ 3″ 1″ Web IS-636 TIS-636
40 6.666 7.000 1-1/8″ 1-11/16″ 3″ 1″ Web IS-640 TIS-640
42 7.000 7.333 1-1/8″ 1-11/16″ 3″ 1″ Web IS-642 TIS-642
44 7.333 7.666 1-1/8″ 1-11/16″ 3″ 1″ Web IS-644 TIS-644
45 7.500 7.833 1-1/8″ 1-11/16″ 3″ 1″ Web IS-645 TIS-645
48 8.000 8.333 1-1/8″ 1-11/16″ 3″ 1″ Web IS-648 TIS-648
54 9.000 9.333 1-1/8″ 1-11/16″ 3″ 1-1/4″ Spoke IS-654 TIS-654
56 9.333 9.666 1-1/8″ 1-11/16″ 3″ 1-1/4″ Spoke IS-656 TIS-656
60 10.000 10.333 1-1/4″ 1-11/16″ 3″ 1-1/4″ Spoke IS-660 TIS-660
64 10.666 11.000 1-1/4″ 1-11/16″ 3″ 1-1/4″ Spoke IS-664 TIS-664
66 11.000 11.333 1-1/4″ 1-11/16″ 3″ 1-1/4″ Spoke IS-666 TIS-666
72 12.000 12.333 1-1/4″ 1-11/16″ 3″ 1-1/4″ Spoke IS-672 TIS-672
84 14.000 14.333 1-1/4″ 1-13/16″ 3-1/4″ 1-1/4″ Spoke IS-684 TIS-684
96 16.000 16.333 1-1/4″ 1-13/16″ 3-1/4″ 1-1/4″ Spoke IS-696 TIS-696
108 18.000 18.333 1-1/4″ 1-13/16″ 3-1/4″ 1-1/4″ Spoke IS-6108 TIS-6108
120 20.000 20.333 1-1/4″ 2″ 3-1/2″ 1-1/2″ Spoke IS-6120 TIS-6120
132 22.000 22.333 1-1/4″ 2″ 3-1/2″ 1-1/2″ Spoke IS-6132 TIS-6132
144 24.000 24.333 1-1/4″ 2-1/8″ 3-3/4″ 1-1/2″ Spoke IS-6144 TIS-6144

† Special Pitch Diameter.

◊ Obsolete Style – Available only from existing stock.

* 14-1/2° Pressure Angle will not operate with 20° Pressure Angle.

~ Available in Cast Iron or Steel.