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 Home: Catalog: Timing Pulleys: Inch Trapezoidal (ANSI IP-24)


INCH TRAPEZOIDAL (ANSI IP-24)
Drawings pitch
(click for dimensions)
tooth form quoting Part Number
Configuration
[6FC] [6F] [6] [6W]
[3F] [3] [pulley blank]
[MXL] [XL] [L] [H] tooth form timing pulleys
timing pulley blanks
Part Number
Structure
pulley types
Type 3 Type 3F Type 6
Type 6F Type 6FC Type 6W

Inch Trapezoidal Synchronous Timing Belt Pulleys

MXL (.080") Pitch
For 1/8", 1/4", or 3/8" Belt Widths
Stocked in aluminum only. Other bore sizes available.
10-16 grooves have on set screw centered in hub.
18-120 grooves have two set screws at 90 centered in hub.
NOTE: ALL DIMENSIONS IN INCHES.  

example of part number structure
  10-MXL-037-6F-A-125
# grooves - pitch - belt width - type - material - bore
PART NUMBER Pitch
Diam.
Pulley
O.D.
Flange
O.D.
1/64
Overall
Length
Face
Width
Hub
Diam
1/64
10  MXL 037 6FC A 125 .255 .235 .425 .700 .500 .425
11  MXL 037 6FC A 125 .280 .260 .450 .700 .500 .450
12  MXL 037 6FC A 125 .306 .286 .480 .700 .500 .480
14  MXL 037 6FC A 125 .357 .337 .530 .700 .500 .530
15  MXL 037 6FC A 187 .382 .362 .555 .700 .500 .555
16  MXL 037 6FC A 187 .407 .387 .580 .700 .500 .580
18  MXL 037 6FC A 250 .458 .438 .635 .700 .500 .635
20  MXL 037 6FC A 250 .509 .489 .6854 .700 .500 .685
21  MXL 037 6FC A 250 .535 .515 .710 .700 .500 .710
22  MXL 037 6FC A 250 .560 .540 .740 .700 .500 .740
18  MXL 037 6F  A 187 .458 .438 .635 .750 .530 .312
20  MXL 037 6F  A 187 .509 .489 .685 .750 .530 .364
21  MXL 037 6F  A 187 .535 .515 .710 .750 .530 .390
22  MXL 037 6F  A 187 .560 .540 .740 .750 .530 .390
24  MXL 037 6F  A 250 .611 .591 .815 .812 .530 .442
25  MXL 037 6F  A 250 .637 .617 .815 .812 .530 .486
28  MXL 037 6F  A 250 .713 .693 .895 .812 .530 .494
30  MXL 037 6F  A 250 .764 .744 .945 .812 .530 .546
32  MXL 037 6F  A 250 .815 .795 1.000 .812 .530 .598
36  MXL 037 6F  A 250 .917 .897 1.105 .812 .530 .676
40  MXL 037 6F  A 250 1.019 .999 1.210 .812 .530 .754
42  MXL 037 6F  A 250 1.070 1.050 1.260 .845 .530 .806
44  MXL 037 6F  A 250 1.120 1.100 1.315 .845 .530 .858
48  MXL 037 6F  A 250 1.222 1.202 1.420 .845 .530 .936
60  MXL 037 6F  A 250 1.528 1.508 1.730 .845 .530 1.222
60  MXL 037 6   A 250 1.528 1.508 - .875 .500 1.148
72  MXL 037 6   A 250 1.833 1.813 - .875 .500 1.195
80  MXL 037 6   A 312 2.037 2.017 - .875 .500 1.500
90  MXL 037 6   A 312 2.292 2.272 - .875 .500 1.500
100 MXL 037 6   A 312 2.546 2.526 - .875 .500 1.500
120 MXL 037 6   A 375 3.056 3.036 - .875 .500 1.500

XL (.200") Pitch
For 3/8" Belt Widths
Other bore sizes available.
10-12 grooves have one set screw centered in hub.
14-72 grooves have two set screws at 90 centered in hub.
NOTE: ALL DIMENSIONS IN INCHES.  

example of part number structure
  10-XL-037-6F-A-187
# grooves - pitch - belt width - type - material - bore
PART NUMBER Pitch
Diam.
Pulley
O.D.
Flange
O.D.
1/64
Face
Width
Overall
Length
Hub
Diam
1/64
10 XL 037 6F A/S 187 .637 .617 .875 .563 .813 .438
11 XL 037 6F A/S 187 .700 .680 .938 .563 .813 .500
12 XL 037 6F A/S 187 .764 .744 1.000 .563 .813 .500
14 XL 037 6F A/S 250 .891 .871 1.094 .563 .813 .563
15 XL 037 6F A/S 250 .955 .935 1.188 .563 .813 .625
16 XL 037 6F A/S 250 1.019 .999 1.250 .563 .813 .688
17 XL 037 6F A/S 250 1.082 1.062 1.313 .563 .813 .750
18 XL 037 6F A/S 250 1.146 1.126 1.375 .563 .813 .813
20 XL 037 6F A/S 250 1.273 1.253 1.500 .563 .875 .938
21 XL 037 6F A/S 250 1.337 1.317 1.563 .563 .875 1.000
22 XL 037 6F A/S 250 1.401 1.381 1.625 .563 .875 1.000
24 XL 037 6F A/S 250 1.528 1.508 1.750 .563 .906 1.063
25 XL 037 6F A/S 250 1.592 1.572 1.813 .563 .906 1.094
28 XL 037 6F A/S 250 1.783 1.763 2.000 .563 .906 1.188
30 XL 037 6F A/S 250 1.910 1.890 2.125 .563 .906 1.313
32 XL 037 6F A/S 312 2.037 2.017 2.250 .563 .906 1.438
36 XL 037 6  A   312 2.292 2.272 - .563 1.000 1.500
40 XL 037 6  A   312 2.546 2.526 - .563 1.000 1.500
42 XL 037 6  A   312 2.674 2.654 - .563 1.000 1.500
44 XL 037 6  A   312 2.801 2.781 - .563 1.000 1.500
48 XL 037 6W A   312 3.056 3.036 - .563 1.000 1.500
60 XL 037 6W A   375 3.820 3.800 - .563 1.000 1.500
72 XL 037 6W A   375 4.584 4.564 - .563 1.000 1.500
example of part number structure
  10-MXL-037-3F-A-188
# grooves - pitch - belt width - type - material - bore
PART NUMBER Pitch
Diam.
Pulley
O.D.
Flange
O.D.
1/64
Face
Width
Overall
Length
Hub
Diam
1/64
10 XL 037 3F A/S 188 .637 .637 .875 .563 - -
11 XL 037 3F A/S 188 .700 .700 .938 .563 - -
12 XL 037 3F A/S 250 .764 .764 1.000 .563 - -
14 XL 037 3F A/S 250 .891 .891 1.094 .563 - -
15 XL 037 3F A/S 250 .955 .955 1.188 .563 - -
16 XL 037 3F A/S 250 1.019 .019 1.250 .563 - -
18 XL 037 3F A/S 250 1.146 1.146 1.375 .563 - -
20 XL 037 3F A/S 250 1.2783 1.273 1.500 .563 - -
21 XL 037 3F A/S 250 1.337 1.337 1.563 .563 - -
22 XL 037 3F A/S 250 1.401 1.401 1.625 .563 - -
24 XL 037 3F A/S 250 1.528 1.528 1.750 .563 - -
28 XL 037 3F A/S 250 1.783 1.783 2.000 .563 - -
30 XL 037 3F A/S 312 1.910 1.910 2.125 .563 - -
32 XL 037 3F A/S 312 2.037 2.037 2.250 .563 - -
36 XL 037 3  A   312 2.292 2.292 - .563 - -
40 XL 037 3  A   312 2.546 2.546 - .563 - -
42 XL 037 3  A   312 2.674 2.674 - .563 - -
48 XL 037 3  A   312 3.056 3.056 - .563 - -
60 XL 037 3  A   375 3.820 3.820 - .563 - -
72 XL 037 3  A   375 4.584 4.584 - .563 - -

L (.375") Pitch
For 1/2" Belt Widths
Other belt widths and bore sizes available.
Includes two set screws at 90 centered in face.
NOTE: ALL DIMENSIONS IN INCHES.  

example of part number structure
  10-L-050-3F-A-375
# grooves - pitch - belt width - type - material - bore
PART NUMBER Pitch
Diam.
Pulley
O.D.
Flange
O.D.
1/64
Face
Width
Overall
Length
Hub
Diam
1/64
10 L 050 3F A/S 375 1.194 1.164 1.438 .750 - -
11 L 050 3F A/S 375 1.313 1.283 1.531 .750 - -
12 L 050 3F A/S 375 1.432 1.402 1.656 .750 - -
13 L 050 3F A/S 375 1.552 1.522 1.781 .750 - -
14 L 050 3F A/S 375 1.671 1.641 1.906 .750 - -
15 L 050 3F A/S 375 1.790 1.760 2.031 .750 - -
16 L 050 3F A/S 500 1.910 1.880 2.125 .750 - -
17 L 050 3F A/S 500 2.029 1.999 2.250 .750 - -
18 L 050 3F A/S 500 2.149 2.119 2.375 .750 - -
19 L 050 3F A/S 500 2.268 2.238 2.500 .750 - -
20 L 050 3F A/S 500 2.387 2.357 2.625 .750 - -
21 L 050 3F A/S 500 2.507 2.477 2.750 .750 - -
22 L 050 3F A/S 500 2.626 2.596 2.875 .750 - -
24 L 050 3F A/S 500 2.865 2.835 3.094 .750 - -
10 L 050 6F A/S 375 1.194 1.164 1.438 .750 1.125 .813
11 L 050 6F A/S 375 1.313 1.283 1.531 .750 1.125 .938
12 L 050 6F A/S 375 1.432 1.402 1.656 .750 1.250 1.063
13 L 050 6F A/S 375 1.552 1.522 1.781 .750 1.250 1.094
14 L 050 6F A/S 375 1.671 1.641 1.906 .750 1.250 1.125
15 L 050 6F A/S 375 1.790 1.760 2.031 .750 1.250 1.250
16 L 050 6F A/S 500 1.910 1.880 2.125 .750 1.375 1.438
17 L 050 6F A/S 500 2.029 1.999 2.250 .750 1.375 1.500
18 L 050 6F A/S 500 2.149 2.119 2.375 .750 1.375 1.563
19 L 050 6F A/S 500 2.268 2.238 2.500 .750 1.375 1.625
20 L 050 6F A/S 500 2.387 2.357 2.625 .750 1.375 1.688
21 L 050 6F A/S 500 2.507 2.477 2.750 .750 1.438 1.875
22 L 050 6F A/S 500 2.626 2.596 2.875 .750 1.500 2.000
24 L 050 6F A/S 500 2.865 2.835 3.094 .750 1.500 2.250

H (.500") Pitch
For 1" Belt Widths
Other belt widths and bore sizes available.
Includes two set screws at 90 centered in face.
NOTE: ALL DIMENSIONS IN INCHES.  

example of part number structure
  10-H-100-6F-S-625
# grooves - pitch - belt width - type - material - bore
PART NUMBER Pitch
Diam.
Pulley
O.D.
Flange
O.D.
1/64
O.A.L Face
Width
Hub
Diam.
1/64
14 H 100 6F S 625 2.228 2.174 2-15/32 1-5/16 1-5/16 1-1/2
16 H 100 6F S 625 2.546 2.492 2-25/32 2-1/16 1-5/16 2
17 H 100 6F S 625 2.706 2.652 3 2-1/16 1-5/16 2
18 H 100 6F S 625 2.865 2.811 3-1/8 2-1/16 1-5/16 2-1/4
19 H 100 6F S 625 3.024 2.970 3-1/4 2-1/8 1-5/16 2-3/8
20 H 100 6F S 625 3.183 3.129 3-27/64 2-3/16 1-5/16 2-1/2
21 H 100 6F S 750 3.342 3.288 3-37/64 2-5/16 1-5/16 2-5/8
22 H 100 6F S 750 3.501 3.447 3-3/4 2-5/16 1-5/16 2-7/8
24 H 100 6F S 750 3.820 3.766 4-1/16 2-5/16 1-5/16 3-1/8
26 H 100 6F S 750 4.138 4.084 4-3/8 2-7/16 1-5/16 3-1/2
28 H 100 6F S 750 4.456 4.402 4-11/16 2-7/16 1-5/16 3-5/8
30 H 100 6F S 750 4.775 4.721 5 2-3/8 1-5/16 3-5/8
14 H 150 6F S 750 2.228 2.174 2-15/32 2-7/16 1-13/16 1-1/2
16 H 150 6F S 750 2.546 2.492 2-25/32 2-9/16 1-13/16 2
17 H 150 6F S 750 2.706 2.652 3 2-9/16 1-13/16 2
18 H 150 6F S 750 2.865 2.811 3-1/8 2-9/16 1-13/16 2-1/4
19 H 150 6F S 750 3.024 2.970 3-1/4 2-5/8 1-13/16 2-3/8
20 H 150 6F S 750 3.183 3.129 3-27/64 2-11/16 1-13/16 2-1/2
21 H 150 6F S 750 3.342 3.288 3-37/64 2-3/4 1-13/16 2-5/8
22 H 150 6F S 750 3.501 3.447 3-3/4 2-13/16 1-13/16 2-7/8
24 H 150 6F S 750 3.820 3.766 4-1/16 2-13/16 1-13/16 3-1/8
26 H 150 6F S 750 4.138 4.084 4-3/8 2-13/16 1-13/16 3-1/2
28 H 150 6F S 750 4.456 4.402 4-11/16 2-15/16 1-13/16 3-5/8
30 H 150 6F S 750 4.775 4.721 5 2-7/8 1-13/16 3-5/8


Part Number Structure
part number configuration, definitions, and conversions
[Part Number]
# Grooves
Use any suitable number of grooves.
ex: 12 or 18
Pitch
RMA/MPTA Pitch Designation.
.080" = MXL
.200" = XL
.375" = L
.500" = H
Belt Width
Belt width expressed according to MPTA/RMA IP-24 standard.
3/8" = .375 = 037
1/2" = .500 = 050
1-1/2" = 1.500 = 150
Type
See drawings for type design.
6FC, 6F, 6, 6W, 3F, or 3
Material
Steel = S, or Aluminum = A
Bore
Bore dimensions expressed in decimal inches.
1/8" = .125 = 125
1/2" = .500 = 500
3/4" = .750 = 750