Timing Belts
MXL (.080") Pitch
1/8", 3/16", and 1/4" belt widths.
NOTE: ALL DIMENSIONS IN INCHES. 

BELT LENGTH & PITCH CODE	Pitch  Length	Number  of Teeth
36  MXL	3.6	45
40  MXL	4.0	50
44  MXL	4.4	55
48  MXL	4.8	60
56  MXL	5.6	70
64  MXL	6.4	80
72  MXL	7.2	90
80  MXL	8.0	100
88  MXL	8.8	110
96  MXL	9.6	120
104 MXL	10.4	130
112 MXL	11.2	140
120 MXL	12.0	150
140 MXL	14.0	175
160 MXL	16.0	200
180 MXL	18.0	225
200 MXL	20.0	250
208 MXL	20.8	260
240 MXL	24.0	300
320 MXL	32.0	400

Timing Belts
XL (.200") Pitch
1/4" and 3/8" belt widths.
1/5" pitch.
NOTE: ALL DIMENSIONS IN INCHES.

BELT LENGTH & PITCH CODE	Pitch  Length	Number  of Teeth
60  XL	6.0	30
70  XL	7.0	35
80  XL	8.0	40
90  XL	9.0	45
100 XL	10.0	50
110 XL	11.0	55
120 XL	12.0	60
130 XL	13.0	65
140 XL	14.0	70
150 XL	15.0	75
160 XL	16.0	80
170 XL	17.0	85
180 XL	18.0	90
190 XL	19.0	95
200 XL	20.0	100
210 XL	21.0	105
220 XL	22.0	110
230 XL	23.0	115
240 XL	24.0	120
250 XL	25.0	125
260 XL	26.0	130

Timing Belts
L (.375") Pitch
1/2", 3/4', and 1" belt widths.
3/8" pitch.
NOTE: ALL DIMENSIONS IN INCHES.  

BELT LENGTH & PITCH CODE	Pitch  Length	Number  of Teeth
124 L	12.375	33
150 L	15.000	40
187 L	18.750	50
210 L	21.000	56
225 L	22.500	60
240 L	24.000	64
255 L	25.500	68
270 L	27.000	72
285 L	28.500	76
300 L	30.000	80
322 L	32.250	86
345 L	34.500	92
367 L	36.750	98
390 L	39.000	104
420 L	42.000	112
450 L	45.000	120
480 L	48.000	128
510 L	51.000	136
540 L	54.000	144
600 L	60.000	160

Timing Belts
H (.500") Pitch
3/4', 1", 1 1/2", 2", and 3" belt widths.
1/2" pitch.
NOTE: ALL DIMENSIONS IN INCHES.

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part number configuration, definitions, and conversions

Belt Length Code

Calculate the (pitch length x 10). ex: 18 x 10 = 180

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