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Worms and Worm Gears
   

Worms and Worm Gears
Pressure Angles:
Single Thread - 14.5°
Double Thread - 20°
Quadruple Thread - 25°

Left Hand gears are available upon special request.

Worms & Worm Gears - 48 D.P.
Bronze Worm Gears 1/8" Concave Face
 Single Thread Double Thread Quad Thread
Number
of Teeth
Pitch
Diameter
Bore
Hub
Diameter
Hub
Projection
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
20 .417 3/16 11/32 3/16 W99 1060 DW99 1069 QW99 1171
24 .500 3/16 3/8 3/16 W100 1057 DW100 1160 QW100 1251
30 .625 3/16 7/16 1/4 W100A 2169 DW100A 1159 QW100A 2013
36 .750 3/16 1/2 1/4 W101 2038 DW101 1075 QW101 2129
40 .833 3/16 1/2 1/4 W101A 1056 DW101A 1074 QW101A 1175
48 1.000 3/16 1/2 1/4 W102 1061 DW102   QW102 1174
50 1.041 3/16 1/2 1/4 W102A 1062 DW102A 1073 QW102A 1173
60 1.250 3/16 5/8 1/4 W103 1064 DW103 1165 QW103 1369
72 1.500 3/16 1/2 1/4 W104 1065 DW104 1164 QW104 1252
80 1.666 1/4 5/8 5/16 W104A 1066 DW104A 1163 QW104A 2130
96 2.000 5/16 9/16 5/16 W105 1067 DW105 1162 QW105 1172
100 2.083 1/4 11/16 5/16 W105A 2001 DW105A 1161 QW105A 1255
120 2.500 5/16 9/16 5/16 W106 2028 DW106 1166 QW106 1254
Worms for above: 0.333" Pitch Diameter
 Single Thread Double Thread Quad Thread
Face
Bore
Hub
Diameter
Hub
Projection
Soft
Hard
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
9/16 3/16 .260 3/16 Soft W48S 1070 DW48S 1168 QW48S 1256
9/16 3/16 .260 3/16 Hard W48H 2185 DW48H 1167 QW48H 2051
9/16 3/16 .260 3/16 Hard & Ground W48HG 2018 DW48HG 2167 QW48HG 1257
Worms with hubs drilled for #47 (.0785) driving pin.
W48H, DW48H, & QW48H threads are polished but not ground.
W48HG, DW48HG, & QW48HG threda are Ground & Polished.

 

Worms & Worm Gears - 32 D.P.
Bronze Worm Gears 3/16" Concave Face
 Single Thread Double Thread Quad Thread
Number
of Teeth
Pitch
Diameter
Bore
Hub
Diameter
Hub
Projection
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
20 .625 3/16 1/2 1/4 W106A 1258 DW106A 794 QW106A 757
24 .750 3/16 1/2 1/4 W107 2085 DW107 795 QW107 756
30 .938 3/16 5/8 1/4 W107A 786 DW107A 796 QW107A 755
36 1.125 3/16 1/2 1/4 W108 1262 DW108   QW108 754
40 1.250 1/4 5/8 5/16 W108A 1261 DW108A   QW108A 753
48 1.500 1/4 1/2 5/16 W109   DW109 1327 QW109 758
50 1.563 1/4 5/8 5/16 W109A 2052 DW109A 1326 QW109A 759
60 1.875 1/4 11/16 5/16 W110 787 DW110 800 QW110  
72 2.250 5/16 5/8 5/16 W111 792 DW111 1331 QW111 760
80 2.500 5/16 11/16 5/16 W111A 286 DW111A 2049 QW111A 2132
96 3.000 5/16 11/16 5/16 W112 791 DW112   QW112 761
100 3.125 5/16 11/16 5/16 W112A 790 DW112A 1329 QW112A 793
120 3.750 5/16 3/4 5/16 W113 2067 DW113 1328 QW113 767
Worms for above: 0.437" Pitch Diameter
 Single Thread Double Thread Quad Thread
Face
Bore
Hub
Diameter
Hub
Projection
Soft
Hard
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
11/16 3/16 0.350 3/16 Soft W32S 799 DW32S 1336 QW32S 762
11/16 7/32 0.350 3/16 Hard W32H 797 DW32H 1337 QW32H 764
11/16 7/32 0.350 3/16 Hard & Ground W32HG 798 DW32HG 1334 QW32HG 763
Worms with hubs drilled for #47 (.0785) driving pin.
W32H, DW32H, & QW32H threads are polished but not ground.
W32HG, DW32HG, & QW32HG threda are Ground & Polished.

 

Worms & Worm Gears - 24 D.P.
Bronze Worm Gears 1/4" Concave Face
 Single Thread Double Thread Quad Thread
Number
of Teeth
Pitch
Diameter
Bore
Hub
Diameter
Hub
Projection
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
18 .750 3/16 1/2 5/16 W114 771 DW114 916 QW114 1005
20 .833 3/16 5/8 5/16 W114A 770 DW114A 2037 QW114A 1004
24 1.000 3/16 5/8 5/16 W115 769 DW115 2116 QW115 2450
30 1.250 3/16 5/8 5/16 W115A 768 DW115A 2074 QW115A 1009
36 1.500 3/16 5/8 5/16 W116 775 DW116 917 QW116  
40 1.667 1/4 5/8 5/16 W116A 774 DW116A 916 QW116A 1010
48 2.000 5/16 3/4 5/16 W117 773 DW117 919 QW117 909
50 2.083 5/16 3/4 5/16 W117A 772 DW117A 920 QW117A 1013
60 2.500 5/16 3/4 5/16 W118 902 DW118 923 QW118 2133
72 3.000 5/16 3/4 5/16 W119 901 DW119 922 QW119 1012
80 3.333 5/16 7/8 3/8 W119A   DW119A 1483 QW119A 1376
96 4.000 3/8 7/8 3/8 W120 2142 DW120 924 QW120 1014
100 4.167 3/8 7/8 3/8 W120A 2143 DW120A 2075 QW120A 1015
Worms for above: 0.500" Pitch Diameter
 Single Thread Double Thread Quad Thread
Face
Bore
Hub
Diameter
Hub
Projection
Soft
Hard
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
13/16 3/16 .380 1/4 Soft W24S 2089 DW24S 1002 QW24S 1017
13/16 1/4 .380 1/4 Hard W24H 907 DW24H 925 QW24H 2043
13/16 1/4 .380 1/4 Hard & Ground W24HG 905 DW24HG 1001 QW24HG 1016
Worms with hubs drilled for #42 (.0935) driving pin.
W24H, DW24H, & QW24H threads are polished but not ground.
W24HG, DW24HG, & QW24HG threda are Ground & Polished.

 

Worms & Worm Gears - 16 D.P.
Bronze Worm Gears 3/8" Concave Face
 Single Thread Double Thread Quad Thread
Number
of Teeth
Pitch
Diameter
Bore
Hub
Diameter
Hub
Projection
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
12 .750 3/16 1/2 5/16 W121 752 DW121 883 QW121 894
20 1.250 1/4 5/8 5/16 W122 1018 DW122 884 QW122 2026
24 1.500 5/16 3/4 3/8 W123 1020 DW123 885 QW123 897
30 1.875 5/16 3/4 3/8 W123A 1021 DW123A 886 QW123A 898
36 2.250 5/16 3/4 3/8 W124 1022 DW124 887 QW124 2175
40 2.500 5/16 3/4 3/8 W124A 1023 DW124A 888 QW124A 899
48 3.000 5/16 7/8 7/16 W125 1024 DW125 889 QW125 900
50 3.125 3/8 7/8 7/16 W125A 1025 DW125A   QW125A  
60 3.750 3/8 7/8 7/16 W126 1054 DW126   QW126  
72 4.500 3/8 7/8 7/16 W127 1053 DW127 891 QW127  
80 5.000 3/8 7/8 7/16 W127A 1052 DW127A 890 QW127A  
96 6.000 3/8 1 1/2 W128 1051 DW128 892 QW128  
100 6.250 3/8 1 1/2 W128A 876 DW128A   QW128A  
Worms for above: 0.625" Pitch Diameter
 Single Thread Double Thread Quad Thread
Face
Bore
Hub
Diameter
Hub
Projection
Soft
Hard
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
1 1/4 .460 1/4 Soft W16S 877 DW16S 13 QW16S 1128
1 5/16 .460 1/4 Hard W16H 879 DW16H 893 QW16H 1126
1 5/16 .460 1/4 Hard & Ground W16HG 880 DW16HG 895 QW16HG 1127
Worms with hubs drilled for #35 (.110) driving pin.
W16H, DW16H, & QW16H threads are polished but not ground.
W16HG, DW16HG, & QW16HG threda are Ground & Polished.

 

Worms & Worm Gears - 12 D.P. 14.5 P.A.
Cast Iron Worm Gears 1/2" Concave Face
 Single Thread Double Thread Quad Thread
Number
of Teeth
Pitch
Diameter
Bore
Hub
Diameter
Hub
Projection
 Style
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
20 1.667 1/2 1-1/4 1/2 Plain W129 1130 W150 1146 W180 1289
30 2.500 1/2 1-1/4 5/8 Plain W130 1131        
30 2.500 3/4 1-1/4 5/8 Plain     W151 1147 W181 1290
40 3.333 5/8 1-1/2 5/8 Web W131 2146        
40 3.333 3/4 1-1/2 5/8 Web     W152 1148 W182 1292
50 4.167 5/8 1-1/2 5/8 Web W132 1133 W153 1149 W183 1293
60 5.000 5/8 1-3/4 3/4 Web W132A 1134        
60 5.000 3/4 1-3/4 3/4 Web     W153A 1150 W183A 1294
80 6.667 5/8 2 3/4 Web W133 1135        
80 6.667 3/4 2 3/4 Web     W154 2087 W184 1295
100 8.333 3/4 2 3/4 Web W134 1136 W155 1277 W185 1300
Bronze Worm Gears 1/2" Concave Face
 Single Thread Double Thread Quad Thread
Number
of Teeth
Pitch
Diameter
Bore
Hub
Diameter
Hub
Projection
 Style
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
20 1.667 1/2 1-1/4 1/2 Plain WB129 1008 WB150 1278 WB180 1299
30 2.500 1/2 1-1/4 5/8 Plain WB130 1138        
30 2.500 3/4 1-1/4 5/8 Plain     WB151 2057 WB181 1502
40 3.333 5/8 1-1/2 5/8 Web WB131 0896        
40 3.333 3/4 1-1/2 5/8 Web     WB152 1279 WB182 1503
50 4.167 5/8 1-1/2 5/8 Web WB132 2227        
50 4.167 3/4 1-1/2 5/8 Web     WB153 1280 WB183 1504
60 5.000 5/8 1-3/4 3/4 Web WB132A 1139        
60 5.000 3/4 1-3/4 3/4 Web     WB153A 1281 WB183A 1505
80 6.667 5/8 2 3/4 Web WB133 1140 WB154 1282 WB184 1506
100 8.333 3/4 2 3/4 Web WB134 2155 WB155 1283 WB185 1508
Worms for above: 1.000" Pitch Diameter
 Single Thread Double Thread Quad Thread
Face
Bore
Hub
Diameter
Hub
Projection
Soft
Hard
Keyway
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
1-1/8 1/2 3/4 3/8 Soft no XW500 1142 XW503 1284 XW506 1509
1-1/8 1/2 none none Hard 1/8 W500A 1143        
1-1/8 1/2 none none Hard 1/8     W503A 1286 W506A 1511
1-1/8 5/8 none none Soft 1/8     W503 1285 W506 1510
1-5/8 1/2 none none Soft 1/8 W500B 1144        
1-5/8 5/8 none none Soft 1/8     W503B 1287    
1-5/8 1/2 none none Hard 1/8 W500C 1145        
1-5/8 5/8 none none Hard 1/8     W503C 1288    
Hardened worms have threads that are Ground & Polished.

 

Worms & Worm Gears - 10 D.P. 14.5 P.A.
Cast Iron Worm Gears 5/8" Concave Face
 Single Thread Double Thread Quad Thread
Number
of Teeth
Pitch
Diameter
Bore
Hub
Diameter
Hub
Projection
 Style
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
20 2.000 1/2 1-1/4 5/8 Plain W135 1512        
20 2.000 7/8 1-5/8 5/8 Plain     W160 855 W190 874
30 3.000 5/8 1-3/4 5/8 Plain W136 1296        
30 3.000 7/8 1-3/4 5/8 Plain     W161 859 W191 873
40 4.000 5/8 1-3/4 5/8 Web W137 1515        
40 4.000 7/8 1-3/4 5/8 Web     W162 858 W192 2149
50 5.000 3/4 2 3/4 Web W138 1519        
50 5.000 7/8 2 3/4 Web     W163 860 W193 852
60 6.000 3/4 2 3/4 Web W139 2147        
60 6.000 7/8 2 3/4 Web     W164 863 W194 976
80 8.000 3/4 2 3/4 Web W139A 1520        
80 8.000 7/8 2 3/4 Web     W165 862 W194A 2212
100 10.000 3/4 2 3/4 Web W140 1000        
100 10.000 7/8 2 3/4 Web     W166 861 W195 2211
Bronze Worm Gears 5/8" Concave Face
 Single Thread Double Thread Quad Thread
Number
of Teeth
Pitch
Diameter
Bore
Hub
Diameter
Hub
Projection
 Style
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
20 2.000 1/2 1-1/4 5/8 Plain WB135 1521        
20 2.000 7/8 1-5/8 5/8 Plain     WB160 989 WB190 977
30 3.000 5/8 1-3/4 5/8 Plain WB136 1522        
30 3.000 7/8 1-3/4 5/8 Plain     WB161 864 WB191 978
40 4.000 5/8 1-3/4 5/8 Web WB137          
40 4.000 7/8 1-3/4 5/8 Web     WB162 865 WB192 979
50 5.000 3/4 2 3/4 Web WB138          
50 5.000 7/8 2 3/4 Web     WB163   WB193 2498
60 6.000 3/4 2 3/4 Web WB139 1516        
60 6.000 7/8 2 3/4 Web     WB164 866 WB194  
80 8.000 3/4 2 3/4 Web WB139A          
80 8.000 7/8 2 3/4 Web     WB165   WB194A  
100 10.000 3/4 2 3/4 Web WB140 1517        
100 10.000 7/8 2 3/4 Web     WB166 867 WB195 980
Worms for above: 1.250" Pitch Diameter
 Single Thread Double Thread Quad Thread
Face
Bore
Hub
Diameter
Hub
Projection
Soft
Hard
Keyway
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
1-3/8 5/8 1 1/2 Soft no XW501 851 XW504 869 XW507 2002
1-3/8 5/8 None None Soft 3/16 W501 853        
1-3/8 3/4 None None Soft 3/16     W504 868 W507 981
1-3/8 5/8 None None Hard 3/16 W501A 854        
1-3/8 5/8 None None Hard 3/16     W504A 870 W507A 983
2 5/8 None None Soft 3/16 W501B 857        
2 3/4 None None Soft 3/16     W504B 871    
2 5/8 None None Hard 3/16 W501C 856        
2 3/4 None None Hard 3/16     W504C 875    
Hardened worms have threads that are Ground & Polished.

 

Worms & Worm Gears - 8 D.P. 14.5 P.A.
Cast Iron Worm Gears 3/4" Concave Face
 Single Thread Double Thread Quad Thread
Number
of Teeth
Pitch
Diameter
Bore
Hub
Diameter
Hub
Projection
 Style
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
20 
 2.500 3/4 1-3/4 3/4 Plain W141 982        
20
 2.500 1 1-3/4 3/4 Plain     W170 2088 W200 997
30 
 3.750 3/4 1-3/4 3/4 Web W142 984        
 30
 3.750 1 1-3/4 3/4 Web     W171 1040 W201 999
40 
 5.000 1 2-1/4 7/8 Web W143 985        
 40
 5.000 1 2-1/4 3/4 Web     W172 1041 W202 1026
 48
 6.000 1 2-3/8 7/8 Web W144 2148        
50 
 6.250 1 2-3/8 7/8 Web W144A 986        
 50 6.250 1 2-3/8 7/8 Web     W173 2261 W203 1027
 60 7.500 1 2-1/2 7/8 Web W144B 1032        
 60 7.500 1 2-1/2 7/8 Web     W173A 1042 W203A 1028
 80 10.000 1-1/4 2-3/4 7/8 Web W145 1031        
 80 10.000 1 2-3/4 7/8 Web     W174 1043 W204 2150
Bronze Worm Gears 3/4" Concave Face
 Single Thread Double Thread Quad Thread
Number
of Teeth
Pitch
Diameter
Bore
Hub
Diameter
Hub
Projection
 Style
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
 20 2.500 3/4 1-3/4 3/4 Plain WB141 1038        
20  2.500 1 1-3/4 3/4 Plain     WB170 2156 WB200 605
 30 3.750 3/4 1-3/4 3/4 Web WB142 1037        
 30 3.750 1 1-3/4 3/4 Web     WB171   WB201 606
40  5.000 1 2-1/4 3/4 Web WB143 2036 WB172 990 WB202 603
 48 6.000 1 2-3/8 7/8 Web WB144 1039        
 50 6.250 1 2-3/8 7/8 Web WB144A   WB173   WB203 1046
 60 7.500 1 2-1/2 7/8 Web WB144B 1034 WB173A 992 WB203A 604
 80 10.000 1-1/4 3 1 Web WB145          
Worms for above: 1.500" Pitch Diameter
 Single Thread Double Thread Quad Thread
Face
Bore
Hub
Diameter
Hub
Projection
Soft
Hard
Keyway
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
 1-3/4 3/4 1-3/16 5/8 Soft no XW502  2020 XW505 994 XW508 475
 1-3/4 3/4 None None Soft 3/16 W502 1030        
 1-3/4 7/8 None None Soft 3/16     W505 996 W508 601
 1-3/4 3/4 None None Hard 3/16 W502A 2019        
 1-3/4 7/8 None None Hard 3/16      W505A 995 W508A 602
 2-1/2 3/4 None None Soft 3/16 W502B          
2-1/2 7/8 None None Soft 3/16     W505B      
2-1/2 3/4 None None Hard 3/16 W502C 1047        
2-1/2 7/8 None None Hard 3/16     W505C 2481    
Hardened worms have threads that are Ground & Polished.

Worms & Worm Gears - 6 D.P. 14.5 P.A.
Cast Iron Worm Gears 1" Concave Face
 Single Thread Double Thread Quad Thread
Number
of Teeth
Pitch
Diameter
Bore
Hub
Diameter
Hub
Projection
 Style
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
20  3.333 3/4 1-7/8 7/8 Plain W224          
20  3.333 1 1-7/8 7/8 Plain     W230A   W239  
24  4.000 3/4 1-7/8 7/8 Plain W225 2153        
24  4.000 1-1/4 1-7/8 7/8 Plain     W231 0930 W240  
 30 5.000 7/8 2-1/4 7/8 Web W226          
30  5.000 1-1/4 2-1/4 7/8 Web     W232 0949 W241 0718
36  6.000 1 2-1/2 7/8 Web W226A          
 40 6.667 1 2-5/8 7/8 Web W227 0972        
 40 6.667 1-1/4 2-5/8 7/8 Web     W233 0928 W242  
 48 8.000 1-1/4 2-3/4 1 Web W227A          
 50 8.333 1-1/4 2-3/4 1 Web W228   W234 0929 W243 2151
60  10.000 1-1/4 2-3/4 1 Web W228A   W234A   W243A  
Bronze Worm Gears 1" Concave Face
 Single Thread Double Thread Quad Thread
Number
of Teeth
Pitch
Diameter
Bore
Hub
Diameter
Hub
Projection
 Style
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
 20 3.333 3/4 1-7/8 7/8 Plain WB224 0470        
 20 3.333 1 1-7/8 7/8 Plain     WB230A 926 WB239  
 24 4.000 3/4 1-7/8 7/8 Plain WB225 0471        
24  4.000 1-1/4 1-7/8 7/8 Plain     WB231 927 WB240 1454
 30 5.000 7/8 2-1/4 7/8 Web WB226 0934        
 30 5.000 1-1/4 2-1/4 7/8 Web     WB232   WB241 2460
36  6.000 1 2-1/2 7/8 Web WB226A          
40  6.667 1 2-5/8 7/8 Web WB227 0972         
40  6.667 1-1/4 2-5/8 7/8 Web     WB233   WB242  
 48 8.000 1-1/4 2-3/4 1 Web WB227A          
 50 8.333 1-1/4 2-3/4 1 Web WB228   WB234 2486 WB243 1455
Worms for above: 2.000" Pitch Diameter
 Single Thread Double Thread Quad Thread
Face
Bore
Hub
Diameter
Hub
Projection
Soft
Hard
Keyway
Catalog
Number
Item
Code
Catalog
Number
Item
Code
Catalog
Number
Item
Code
2-1/2  7/8 1-9/16 3/4 Soft no XW510 2158 XW511 724 XW509 2461
 2-1/2 7/8 None None Soft 3/16 W510 931        
 2-1/2 1 None None Soft 1/4     W511 725 W509 1456
2-1/2  7/8 None None Hard 3/16 W510A 933        
2-1/2 1 None None Hard 1/4     W511A 720 W509A 936
3-1/2 7/8 None None Soft 3/16 W510B 2193        
3-1/2 1 None None Soft 1/4     W511B 721    
 3-1/2 7/8 None None Hard 3/16 W510C 950        
 3-1/2 1 None None Hard 1/4     W511C 722    
Hardened worms have threads that are Ground & Polished.

Worms & Worm Gears - 5 D.P. 14.5 P.A.
Cast Iron Worm Gears 1-3/8" Concave Face
 Single Thread Double Thread
Number
of Teeth
Pitch
Diameter
Bore
Hub
Diameter
Hub
Projection
 Style
Catalog
Number
Item
Code
Catalog
Number
Item
Code
20  4.000 1-1/8 2-1/2 1-1/8 Plain W5100      
25  5.000 1-1/8 2-1/2 1-1/8 Web W5101      
 29 5.800 1-1/4 2-3/4 1-1/8 Web W5101A   TW500  
40  8.000 1-3/8 3 1-1/8 Web W5102 2154  TW501  
50  10.000 1-1/2 3-1/4 1-1/8 Web W5103   TW502  
Bronze Worm Gears 1-3/8" Concave Face
 Single Thread Double Thread
Number
of Teeth
Pitch
Diameter
Bore
Hub
Diameter
Hub
Projection
 Style
Catalog
Number
Item
Code
Catalog
Number
Item
Code
20 4.000 1-1/8 2-1/2 1-1/8 Plain WB5100 1220    
 25 5.000 1-1/8 2-1/2 1-1/8 Plain WB5101      
 29 5.800 1-1/4 2-3/4 1-1/8 Web WB5101A      
 40 8.000 1-3/8 3 1-1/8 Web WB5102      
 50 10.000 1-1/2 3-1/4 1-1/8 Web WB5103 2173    
Worms for above: 2.300" Pitch Diameter
 Single Thread Double Thread
Face
Bore
Hub
Diameter
Hub
Projection
Soft
Hard
Keyway
Catalog
Number
Item
Code
Catalog
Number
Item
Code
3.000  1-1/8 None None Soft 1/4 W5201S      
 3.000 1-1/8 None None Hard 1/4 W5201H 1221 WH500  
Hardened worms have threads that are Ground & Polished.

Worms & Worm Gears - 4 D.P. 14.5 P.A.
Cast Iron Worm Gears 1-1/2" Concave Face
 Single Thread
Number
of Teeth
Pitch
Diameter
Bore
Hub
Diameter
Hub
Projection
 Style
Catalog
Number
Item
Code
 20 5.000 1 2-1/2 1-1/4 Web W4110  
24 6.000 1 2-1/2 1-1/4 Web W4111  
 32 8.000 1-1/4 3 1-1/4 Web W4112  
 40 10.000 1-1/4 3 1-1/4 Web W4113  
Bronze Worm Gears 1-1/2" Concave Face
 Single Thread
Number
of Teeth
Pitch
Diameter
Bore
Hub
Diameter
Hub
Projection
 Style
Catalog
Number
Item
Code
 20 5.000 1 2-1/2 1-1/4 Web WB4110  
24  6.000 1 2-1/2 1-1/4 Web WB4111 1451
 32 8.000 1-1/4 3 1-1/4 Web WB4112 2198
Worms for above: 3.000" Pitch Diameter
 Single Thread
Face
Bore
Hub
Diameter
Hub
Projection
Soft
Hard
Keyway
Catalog
Number
Item
Code
 3-1/2 1-1/4 None None Soft 5/16 W4210  
 3-1/2 1-1/4 None None Hard 5/16 W4211  
 4-1/2 1-1/4 None None Soft 5/16 W4212  
4-1/2  1-1/4 None None Hard 5/16 W4213  
Hardened worms have threads that are Ground & Polished.

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