American standard bevel gear Miter Gears 20° Pressure Angle Steel – Plain Bore—Hardened Teeth
<h2>American standard bevel gear</h2>
American standard bevel gear Miter Gears
20° Pressure Angle
1:1 ratio. They are working where high efficiency is required. Only miters of the same number of teeth, pitch, and pressure angle is operating together. More than two miters is working in sets, as in a differential.
The thrust of Miter Gears causes the gears to separate; there- fore, ball bearings or roller bearings should be used rather than sleeve bearings. Provisions should be made using thrust bear- ings to absorb backward thrust.
All standard stock Miter Gears must be mounted at right angles (90 degrees) for proper tooth bearing.
All Miter and Bevel Gears are generated with the Coniflex tooth form. A slight misalignment of gears is permissi- ble because of the localized tooth bearing running lengthwise along the gear tooth.
The mounting distance must be held in order to maintain prop- er backlash between gears. This will also insure that the ends of the gear teeth will be flush with each other. The use of a straight mineral oil as a lubricant is recommended for most Miter Gear applications.
Stock Miter Gears are making from .40 carbon steel.
- The “M” Series: furnished unhardened with plain bore.
- The “HM”Series: furnished hardened teeth with plain bore.
- The “HMK” Series: furnished hardened teeth with key way and setscrew for installation on the shaft.
Hardened Miter Gears have approximately 50% more horse- power capacity and provide greater gear wear than untreated gears.
All Miter Gears are cut with the 20° pressure angle sys-tem. They will not operate with any other pressure angle system.
Diameter Data
Steel – Plain Bore—Unhardened Teeth
| Number | Catalog | Face | Mounting | Wt.Lbs. | |||
| Teeth | Number | (Inches) | (Inches) | (App.) |
4 Pitch
24 M424 6.00 6.36 1.33 11/2 3 9/16 5 1/2 4 1 15/16 14.4 24 M424A 6.00 6.36 1.33 13/4 3 9/16 5 1/2 4 1 15/16 13.7 28 M428 7.00 7.36 1.43 2 3 5/8 6 5 1 15/16 21.1 5 Pitch
25 M525 5.00 5.29 1.10 1 3/8 3 45 /8 3 1/2 13/4 8.5 25 M525A 5.00 5.29 1.10 1 1/2 3 45 /8 3 1/2 13/4 8.3 25 M525B 5.00 5.29 1.10 1 3/4 3 45 /8 3 1/2 13/4 7.8 6 Pitch
24 M624 4.00 4.24 .86 1 1/4 2 15/16 4 5/8 3 15/16 4.4 24 M624A 4.00 4.24 .86 1 1/2 2 15/16 4 5/8 3 15/16 4.3 27 M627 4.50 4.74 .96 1 1/4 2 5/8 4 1/8 31/4 11/2 6.3 27 M627A 4.50 4.74 .96 1 1/2 2 5/8 4 1/8 31/4 11/2 5.9 8 Pitch
24 24
24
M824 M824A
M324B
3.00 3.00
3.00
3.18 .64 .64
.64
3/4 1
1 1/4
1 37/64 1 49/64
1 49/64
29/16 23/4
23/4
13/4 21/221/2
13/16 1
1
1.5 2.1
1.9
28 M828 3.50 3.68 .75 1 2 3/32 31/4 21/2 11/4 2.9 28 M828A 3.50 3.68 .75 1 3/16 2 3/32 31/4 21/2 11/4 2.8 28 M328B 3.50 3.68 .75 1 1/4 2 3/32 31/4 21/2 11/4 2.6 32 M832 4.00 4.18 .84 1 2 3/32 35/8 3 11/8 4.8 10 Pitch
20 M1020A 2.00 2.14 .44 1/2 123/64 2 15/8 13/16 .75 20 M1020B 2.00 2.14 .44 5/8 123/64 2 15/8 13/16 .72 20 M1020 2.00 2.14 .44 3/44 123/64 2 15/8 13/16 .67 20 M1020C 2.00 2.14 .44 7/8 123/64 2 15/8 13/16 .58 25 M1025 2.50 2.64 .55 3/4 15/8 27/16 2 15/16 1.2 25 M1025A 2.50 2.64 .55 7/8 15/8 27/16 2 15/16 1.2 25 M1025B 2.50 2.64 .55 1 15/8 27/16 2 15/16 1.2 30 M1030 3.00 3.14 .64 3/4 13/4 23/4 2 1 1.8 Steel – Plain Bore—Unhardened Teeth
Number Catalog Face Mounting Wt.Lbs. Teeth Number (Inches) (Inches) (App.) 12 Pitch
15 M1215 1.25 1.37 .27 3/8 55/64 1 1/4 1 1/2 . 17 15 M1215A 1.25 1.37 .27 7/16 55/64 1 1/4 1 1/2 .16 15 M1215B 1.25 1.37 .27 1/2 55/64 1 1/4 1 1/2 .15 18 M1218 1.50 1.62 .32 1/2 1164 1 1/2 1 1/4 5/8 .30 18 M1218A 1.50 1.62 .32 5/8 1164 1 1/2 1 1/4 5/8 .25 18 M1218B 1.50 1.62 .32 3/4 11/64 1 1/2 1 1/4 5/8 .22 21 M1221 1.75 1.87 .39 1/2 13/16 1 3/4 1 3/8 11/16 .45 21 M1221A 1.75 1.87 .39 9/16 13/16 1 3/4 1 3/8 11/16 .45 21 M1221B 1.75 1.87 .39 5/8 13/16 1 3/4 1 3/8 11/16 .43 21 M1221C 1.75 1.87 .39 3/4 13/16 1 3/4 1 3/8 11/16 .38 24 M1224 2.00 2.12 .43 1/2 17/32 1 7/8 1 1/2 11/16 .62 30 M1230 2.50 2.62 .54 5/8 131/64 2 5/16 1 3/4 27/32 1.10 14 Pitch
14 M1414 1.00 1.11 .19 3/8 47/64 1 1/16 7/8 1/2 .10 14 M1414A 1.00 1.11 .19 7/16 47/64 1 1/16 7/8 1/2 .09 16 Pitch
12 M1612 .75 .84 .16 5/16 37/64 13/16 5/8 3/8 .05 16 M1616 1.00 1.09 .22 3/8 3/4 1 1/16 3/4 7/16 .07 20 M1620 1.25 1.34 .27 7/16 27/32 1 1/4 1 1/2 .16 24 M1624 1.50 1.59 .31 7/8 7/8 1 3/8 1 1/2 .20 20 Pitch
20 M2020 1.00 1.07 .23 3/8 13/16 1 1/8 3/4 1/2 .06 25 M2025 1.25 1.32 .25 3/8 3/4 1 3/16 1 3/8 .14 24 Pitch
24 M2424 1.00 1.06 .20 1/4 9/16 29/32 5/8 9/32 .12 Steel – Plain Bore—Hardened Teeth American standard bevel gear
Number Catalog Face Mounting Wt.Lbs. Teeth Number (Inches) (Inches) (App.) 4 Pitch
24 24
HM424 HM424A
6.00 6.00
6.36 6.36
1.33 1.33
11/2 13/4
39/16 39/16
51/2 51/2
4 4
1 15/16 1 15/16
14.4 13.7
28 HM428 7.00 7.36 1.43 2 35/8 6 5 1 15/16 21.1 5 Pitch
25 HM525 5.00 5.29 1.10 13/8 3 45/8 31/2 13/4 8.5 25 HM525A 5.00 5.29 1.10 11/2 3 45/8 31/2 13/4 8.3 25 HM525B 5.00 5.29 1.10 13/4 3 45/8 31/2 13/4 7.5 6 Pitch
24 HM624 4.00 4.24 .86 11/4 25/16 35/8 3 15/16 4.4 24 HM624A 4.00 4.24 .86 11/2 25/16 35/8 3 15/16 4.0 27 HM627 4.50 4.74 .96 11/4 25/8 41/8 31/4 11/2 6.3 27 HM627A 4.50 4.74 .96 11/2 25/8 41/8 31/4 11/2 5.9 8 Pitch
24 24
24
HM824 HM824A
HM824B
3.00 3.18 .64 .64
.64
3/4 1
11/4
137/64 149/64
149/64
29/16 23/4
23/4
13/4 21/2
21/2
13/16 1
1
1.5 2.1 2.6
28 HM828 3.50 3.68 .75 1 23/32 31/4 21/2 11/4 3.0 28 HM828A 3.50 3.68 .75 13/16 23/32 31/4 21/2 11/4 2.8 28 HM828B 3.50 3.68 .75 11/4 23/32 31/4 21/2 11/4 2.6 32 HM832 4.00 4.18 .85 1 29/32 35/8 3 11/8 4.7 10 Pitch
20 20
20
20
HM1020A HM1020B
HM1020
HM1020C
2.00 2.14 .44 .44
.44
.44
1/2 5/8
3/4
7/8
123/64 123/64
123/64
123/64
2 2
2
2
15/8 15/8
15/8
15/8
13/16 13/16
13/16
13/16
.76 .70
.64
.58
25 HM1025 2.50 2.64 .55 3/4 15/8 27/16 2 15/16 1.3 25 HM1025A 2.50 2.64 .55 7/8 15/8 27/16 2 15/16 1.2 25 HM1025B 2.50 2.64 .55 1 15/8 27/16 2 15/16 1.2 30 HM1030 3.00 3.14 .64 3/4 13/4 23/4 2 1 1.8 Steel – Plain Bore—Hardened Teeth American standard bevel gear
Number Teeth
Catalog Number
Diair Pitch
eter Outside
Face (Inches)
Bore (I Diameter nches) Length
Mounting (Inches)
Hub (I Diameter nches) Proj.(App.)
Wt. Lbs. (App.) 12 Pitch 15 HM1215 1.25 1.37 .27 3/8 55/64 11/4 1 1/2 .15 15 HM1215B 1.25 1.37 .27 1/2 55/64 11/4 1 1/2 .15 18 HM1218 1.50 1.62 .32 1/2 11/64 11/2 11/4 5/8 .30 18 HM1218A 1.50 1.62 .32 5/8 11/64 11/2 11/4 5/8 .25 18 HM1218B 1.50 1.62 .32 3/4 11/64 11/2 11/4 5/8 .22 21 HM1221 1.75 1.87 .39 1/2 13/16 13/4 13/8 11/16 .22 21 HM1221B 1.75 1.87 .39 5/8 13/16 13/4 13/8 11/16 .42 24 HM1224 2.00 2.12 .43 1/2 17/32 17/8 11/2 11/16 .62 30 HM1230 2.50 2.62 .54 5/8 131/64 25/16 13/4 27/32 1.1 14 Pitch
14 HM1414 1.00 1.11 .19 3/8 47/64 11/16 7/8 1/2 .10 14 HM1414A 1.00 1.11 .19 7/16 47/64 11/16 7/8 1/2 .10 16 Pitch
16 HM1616 1.00 1.09 .22 3/8 3/4 11/16 3/4 7/16 .07 24 HM1624 1.50 1.59 .31 1/2 7/8 13/8 1 1/2 .20
24 HM2424 1.00 1.06 .20 1/4 9/16 29/32 5/8 9/32 .06 Steel – Furnished With Keyway and Set Screw—Hardened Teeth
Number Catalog Face Mounting Wt.Lbs. Teeth Number (Inches) (Inches) (App.) 4 Pitch
24 HMK424A 6.00 6.36 1.33 13/4 39/16 51/2 4 115/16 13.7 28 HMK428 7.00 7.36 1.43 2 35/8 6 5 115/16 20.4 5 Pitch
25 HMK525 5.00 5.29 1.10 13/4 3 45/8 31/2 13/4 8.5 25 HMK525B 5.00 5.29 1.10 13/4 3 45/8 31/2 13/4 7.5 6 Pitch
24 HMK624 4.00 4.24 .86 11/4 25/16 35/8 3 15/16 4.4 24 HMK624A 4.00 4.24 .86 11/2 25/16 35/8 3 15/16 4.0 27 HMK627 4.50 4.74 .96 11/4 25/8 41/8 31/4 11/2 6.3 27 HMK627A 4.50 4.74 .96 11/2 25/8 41/8 31/4 11/2 5.9 8 Pitch
24 24
24
HMK824 HMK824A
HMK824B
3.00 3.00
3.00
3.18 .64 .64
.64
3/4 1
11/4
137/64 149/64
149/64
29/16 23/4
23/4
13/4 21/2
21/2
13/16 1
1
1.5 2.1
1.8
28 HMK828 3.50 3.68 .75 1 23/32 31/4 21/2 11/4 2.9 28 HMK828A 3.50 3.68 .75 13/16 23/32 31/4 21/2 11/4 2.7 28 HMK828B 3.50 3.68 .75 11/4 23/32 31/4 21/2 11/4 2.6 10 Pitch
20 20
20
20
HMK1020A HMK1020B
HMK1020
HMK1020C
2.00 2.14 .44 .44
.44
.44
1/2 5/8
3/4
7/8
123/64 123/64
123/64
123/64
2 2
2
2
15/8 15/8
15/8
15/8
13/16 13/16
13/16
13/16
.74 .70
.63
.58
25 HMK1025 2.50 2.64 .55 3/4 15/8 27/16 2 15/16 1.30 25 HMK1025A 2.50 2.64 .55 7/8 15/8 27/16 2 15/16 1.20 25 HMK1025B 2.50 2.64 .55 1 15/8 27/16 2 15/16 1.10 12 Pitch
15 HMK1215B 1.25 1.37 .27 1/2 55/64 11/4 1 1/2 .14 18 HMK1218A 1.50 1.62 .32 5/8 11/64 11/2 11/4 5/8 .25 21 HMK1221B 1.75 1.87 .39 5/8 13/16 13/4 13/8 11/16 .41 30 HMK1230 2.50 2.62 .54 5/8 131/64 2 5/16 13/4 27/32 1.1 16 Pitch
16 HMK1616 1.00 1.09 .22 3/8 3/4 11/16 3/4 7/16 .07 24 HMK1624 1.50 1.59 .31 1/2 7/8 13/8 1 1/2 .20 Steel
10 25 50 100 200 300 600 900 1200 1800 24 .80 1.90 3.6 6.4 10.6 13.5 18.8 21.5 23.0 24 1.40 3.33 6.3 11.2 18.6 23.6 33.0 38.0 40.0 28 1.07 2.50 4.8 8.4 13.6 17.2 23.3 26.5 28.5 28 1.90 4.50 8.4 14.7 23.8 30.0 40.0 46.0 50.0 25 .45 1.05 2.0 3.7 6.3 8.1 11.6 13.6 15.0 25 .75 1.90 3.6 6.5 11.0 14.2 20.0 24.0 26.0 24 .25 .55 1.1 2.0 3.5 4.6 6.9 8.2 19.0 10.2 24 .40 1.00 1.9 3.5 6.1 8.0 12.0 14.5 16.0 18.0 27 .30 .75 1.4 2.5 4.3 5.7 8.5 9.9 11.0 12.0 27 .50 1.33 2.5 4.4 7.5 10.0 1.5 17.5 19.0 21.0 24 .10 .25 .5 .9 1.5 2.1 3.3 4.0 4.5 5.3 24 .20 .40 .8 1.5 2.6 3.7 5.8 7.0 8.0 9.3 28 .15 .33 .7 1.2 2.2 2.9 4.4 5.3 6.0 6.8 28 .25 .60 1.2 2.1 3.9 5.0 7.7 9.3 10.5 12.0 2 .20 .45 .9 1.6 2.8 3.7 5.5 6.5 7.2 8.0 2 .33 .80 1.5 2.8 4.9 6.5 9.6 11.4 12.5 14.2 1020 .03 .08 .2 .3 .6 .8 1.3 1.7 2.0 2.4 1020 .05 . 15 .3 .5 1.0 1.4 2.3 3.0 3.5 4.2 1025 .06 .15 .3 .5 .9 1.3 2.0 2.5 2.9 3.5 1025 .10 .25 .5 .9 1.6 2.3 3.5 4.4 5.0 6.0 1030 .08 .20 .4 .7 1.3 1.8 2.8 3.5 3.9 4.5 1030 .15 .33 .7 1.3 2.3 3.2 4.9 6.1 6.8 8.0 1215 .01 .02 .05 .10 .20 .3 .5 .6 .8 .9 1215 .02 .04 .10 .17 .33 .4 .8 1.0 1.3 1.6 1218 .01 .03 .08 .14 .25 .4 .7 .9 1.0 1.3 1218 .02 .05 .15 .25 .47 .7 1.1 1.5 1.8 2.2 1221 .02 .05 .11 .20 .40 .5 .9 1.2 1.4 1.7 1221 .04 .10 .20 .33 .70 1.0 1.6 2.1 2.5 3.0 1224 .03 .07 .15 .25 .50 .7 1.2 1.5 1.7 2.0 1224 .05 .12 .25 .47 .90 1.2 2.1 2.6 3.0 3.5 1230 .05 .12 .25 .44 .80 1.1 1.8 2.2 2.5 3.0 1230 .09 .21 .40 .75 1.40 1.9 3.2 4.0 4.4 5.3 1414 .01 .02 .05 .09 .1 .2 .3 .4 .5 1414 .02 .04 .09 .16 .2 .4 .6 .7 .9 1616 .01 .02 .05 .09 .1 .2 .3 .4 .5 1616 .02 .04 .09 .16 .2 .4 .6 .7 .9 1620 .02 .04 .08 . 14 .2 .4 .5 .6 .8 1620 .04 .07 .15 .25 .4 .7 .9 1.0 1.3 1624 .03 .06 .12 .20 .3 .5 .7 .8 1.0 1624 .05 . 10 .21 .40 .5 .9 1.2 1.4 1.8 2020 .01 .02 .04 .08 .1 .2 .2 .4 .5 2020 .02 .04 .07 .14 .2 .4 .5 .6 .8 2025 .02 .03 .06 .12 .2 .3 .4 .5 .6 2025 .04 .05 .10 .21 .3 .5 .7 .9 1.0 Ratings listed to right of dark line exceed recommended pitch line velocity.
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