Spur Gears: 4 Diametral Pitch Ratings

14-1/2° and 20° Pressure Angle*

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†◊ 3.000 3.500 1-1/8″ 1-5/8″ 2-5/16″ 7/8″ Plain ST-411 TST-411
11† 3.000 3.500 1-1/8″ 1-5/8″ 2-1/4″ 7/8″ Plain ST-411-B TST-411-B
12◊ 3.000 3.500 1-1/8″ 1-5/8″ 2-5/16″ 7/8″ Plain ST-412 TST-412
12 3.000 3.500 1-1/8″ 1-5/8″ 2-1/4″ 7/8″ Plain ST-412-B TST-412-B
14 3.500 4.000 1-1/8″ 1-7/8″ 2-3/4″ 7/8″ Plain ST-414 TST-414
15 3.750 4.250 1-1/8″ 2-1/8″ 3″ 7/8″ Plain ST-415 TST-415
16 4.000 4.500 1-1/8″ 2-5/16″ 3-1/4″ 7/8″ Plain ST-416 TST-416
18 4.500 5.000 1-1/8″ 2-5/8″ 3-3/4″ 7/8″ Plain ST-418 TST-418
20 5.000 5.500 1-1/8″ 3″ 4-1/4″ 7/8″ Plain ST-420 TST-420
22 5.500 6.000 1-1/8″ 3-3/8″ 4-3/4″ 7/8″ Plain ST-422 TST-422

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.
24 6.000 6.500 1-1/8″ 2″ 3-1/2″ 1-1/2″ Plain IS-424 TIS-424
28 7.000 7.500 1-1/4″ 2″ 3-1/2″ 1-1/2″ Web IS-428 TIS-428
32 8.000 8.500 1-1/4″ 2″ 3-1/2″ 1-1/2″ Web IS-432 TIS-432
36 9.000 9.500 1-1/4″ 2-1/8″ 3-3/4″ 1-1/2″ Web IS-436 TIS-436
40◊ 10.000 10.500 1-1/4″ 2-1/8″ 3-3/4″ 1-1/2″ Spoke IS-440 TIS-440
40 10.000 10.500 1-1/4″ 2-1/8″ 4″ 1-1/2″ Spoke IS-440-B TIS-440-B
44 11.000 11.500 1-1/4″ 2-1/4″ 4″ 1-1/2″ Spoke IS-444 TIS-444
48 12.000 12.500 1-1/4″ 2-1/4″ 4″ 1-1/2″ Spoke IS-448 TIS-448
54 13.500 14.000 1-1/4″ 2-1/4″ 4″ 1-1/2″ Spoke IS-454 TIS-454
56 14.000 14.500 1-1/4″ 2-1/4″ 4″ 1-1/2″ Spoke IS-456 TIS-456
60 15.000 15.500 1-1/4″ 2-1/4″ 4″ 1-1/2″ Spoke IS-460 TIS-460
64 16.000 16.500 1-1/4″ 2-1/4″ 4″ 1-1/2″ Spoke IS-464 TIS-464
72 18.000 18.500 1-1/4″ 2-1/2″ 4-1/2″ 1-1/2″ Spoke IS-472 TIS-472
80 20.000 20.500 1-3/8″ 2-1/2″ 4-1/2″ 1-1/2″ Spoke IS-480 TIS-480
88 22.000 22.500 1-3/8″ 2-1/2″ 4-1/2″ 1-3/4″ Spoke IS-488 TIS-488
96 24.000 24.500 1-3/8″ 2-1/2″ 4-1/2″ 1-3/4″ Spoke IS-496 TIS-496
112 28.000 28.500 1-3/8″ 2-7/8″ 5″ 1-3/4″ Spoke IS-4112 TIS-4112
120 30.000 30.500 1-3/8″ 2-7/8″ 5″ 1-3/4″ Spoke IS-4120 TIS-4120
132 33.000 33.500 1-3/8″ 2-7/8″ 5″ 1-3/4″ Spoke IS-4132 TIS-4132
144 36.000 36.500 1-3/8″ 3-1/8″ 5-1/2″ 1-3/4″ Spoke IS-4144 TIS-4144

† Special Pitch Diameter.

◊ Obsolete Style – Available only from existing stock.

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