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High performance profile ATL 20

BRECO timing belts

Available version for ATL 20
Open lengths (M)

  • Standard
  • Nylon tooth facing (PAZ)

Preferred delivery:

  • In rolls of 50 or 100 m
  • Shorter dimensions (cut-to-length) and longer lengths above 50 m are possible
Preferred belt
widths b [mm]:
Tension cord strength
(M) F
adm [N]:
32
50
75
100
9800
15400
23800
31500

Synchronous pulleys:

  • from z=25 (w/o contraflexure)
  • from z=25 (with contraflexure)

More information on synchronous pulleys

ATL 20
ATL 20 profile drawing

3D view
3D view

 

1. Tooth shear strength
specific tooth force

Rotational speed n (rpm)

Ftspez (N/cm)

Rotational speed n (rpm)

Ftspez (N/cm)

0

147,0

1600

73,9

20

144,2

1700

72,0

40

141,7

1800

70,1

60

139,3

1900

68,4

80

137,0

2000

66,7

100

134,9

2200

63,6

200

125,8

2400

60,7

300

118,5

2600

58,0

400

112,4

2800

55,5

500

107,2

3000

53,1

600

102,6

3200

50,9

700

98,5

3400

48,8

800

94,8

3600

46,8

900

91,5

3800

45,0

1000

88,4

4000

43,2

1100

85,6

4500

39,0

1200

82,9

5000

35,3

1300

80,5

5500

32,0

1400

78,2

6000

28,9

1500

76,0

6500

26,0


The specific tooth force Ftspez is the maximum force N a belt tooth with a width of 1 cm can transmit. This value depends on the rotational speed of the drive pulley. The calculation takes into account each identical carrying values for each meshing tooth. With more than 12 meshing teeth ze is limited to 12.

Ft = Ftspez * ze * b

Ft = Tangential force
Ftspez = Specific tooth force in N/cm
b = Belt width in cm
ze = Number of meshing teeth
zemax = 12

2. Tension cord strength (M) Ftzul [N] (open length)
permitted tensile force of the belt cross-section

Belt width b [mm] 32 50 75 100
BRECO ATL 20 9800 15400 23800 31500

Specific elasticity Cspez [N]:
Example: 10[6] = 106

Belt width b [mm] 32 50 75 100
BRECO ATL 20 2,36*10[6] 3,71*10[6] 5,74*10[6] 7,59*10[6]

Belt weights [kg/m]

Belt width b [mm] 32 50 75 100
BRECO ATL 20 0,350 0,550 0,840 1,110

Pulley width:

Belt width b [mm] 32 50 75 100
BRECO ATL 20 40 60 85 110

3. Flexibility
Minimum number of teeth, minimum diameter
( X ) without contraflexure
( X X ) with contraflexure

Belt type

Number of teeth zmin ( X )

Tension roller dmin [mm] ( X )

Number of teeth zmin ( X X )

Tension roller dmin [mm] ( X X )

BRECO ATL 20

25

160

25

250