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American standard bevel gear
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American standard bevel gear Miter Gears 20° Pressure Angle Steel – Plain Bore—Hardened Teeth

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Description

<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.

  1. The “M” Series: furnished unhardened with plain bore.
  2. The “HM”Series: furnished hardened teeth with plain bore.
  3. 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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