• PU TIMING BELT
  • PU TIMING BELT
  • PU TIMING BELT

PU TIMING BELT

•  Maintenance free and therefore less downtime
•  Highly resistant to elongation
•  Reduced noise level
•  Quiet and smooth running
•  Highly resistant to oil, grease & moisture
•  Excellent flex life

Our belts of the profile systems T and AT are made of polyurethane with high-tension fine steel cord tension members in most cases. As far as certain forces are given in this document, these values are only valid for these kinds of belt. For polyurethane belts with different tensile cords, i.e. aramid or rubber belts reinforced with glass fibre, the values can be different.

 

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Open belts made of thermoplastic polyurethane can be spliced to work as endless belts in conveyor applications. In this case, the tolerances are not valid for the splicing area of the endless spliced belt.

Belt profile systems

Eight belt profiles for synchronous drives are standardized:

Profile system T:  profile T2,5 profile T5profile T10,  profile T20 ;

Profile system AT:  profile AT3profile AT5, profile AT10profile AT20


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Belt tooth dimensions and tolerances

The nominal belt tooth dimensions are the same for single-sided and double-sided belts; they are given in Table 1 and shown in Figure 1

Belt profile

Pitch Pb mm

Tooth Angle 2β Degrees

Root Width Sr mm

hs mm

hd mm

ht mm

ra min. mm

rr±0.1 mm

T2.5

2.5

40±2

1.5±0.05

1.30±0.15

1.90

0.7±0.05

0.2

0.2

T5

5

40±2

2.65±0.05

2.20±0.15

3.25

1.20±0.05

0.4

0.4

T10

10

40±2

5.30±0.1

4.50±0.30

6.8

2.50±0.10

0.6

0.6

T20

20

40±2

10.15±0.15

8.00±0.45

12.85

5.00±0.15

0.8

0.8

AT3

3

50±2

1.5±0.05

1.90±0.15ª

n.a

1.10±0.05

0.3

0.1

AT5

5

50±2

2.50±0.05

2.70±0.15ª

3.05

1.20±0.05

0.4

0.6

AT10

10

50±2

5.00±0.1

4.50±0.30ª

6.5

2.50±0.10

0.6

1.2

AT20

20

50±2

10.00±0.15

8.00±0.45ª

12.15

5.00±0.15

1.6

2.5

NOTE   The value of hd can vary due to process-related adjustments of the manufacturer.

ª The thickness of the backside depends on the method of manufacturing.

Belt widths and tolerances mm

Belt Profile

Nominal Belt Width

Tolerance

T2,5

T5

T10

T20

AT3

AT5

AT10

AT20

6

16

32

6

6

16

32

4

10

25

50

10

10

25

50

6

16

32

75

16

16

32

75

10

25

50

100

25

25

50

100

±0,3

±0,5

±0,5

±1,0

±0,3

±0,5

±0,5

±1,0

NOTE Tolerances for larger belt widths and closer tolerances to be confirmed between the user and the manufacturer.


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APPLICATIONS

. Office-ATM machines. Appliances. Laundry machines. Medical equipment

. Machines tools, Packaging machines, Plastic machines. Woodworking and glass machines

. Compressors, pumps, ventilation. Paper industry machinery. Food processing equipment

. HVAC units. Textile machinery. Mining equipment. Farm machinery ·Vending machinery

. Automatic warehouses

 KEY FEATURES & BENEFITS

·Good quality/price ratio ·Maintenance-free. High efficiency. Good oil resistance. Temperature: - 20 +100 'C

Belt nomenclature

the belt is designated by a combination of numbers and letters as follows:

a) the width, in millimetres;

b) the profile system;

c) the pitch, in millimetres;

d) the belt pitch length, in millimetres (and add the number of teeth in brackets, if required);

e) double-sided belts are designated by adding DG or DT before the profile system letter: DG if the tooth position is opposite Gap; DT if the tooth position is opposite Tooth;

f) open belts are designated by adding the letter "M" behind the length; for spliced belts, use the letter "V."

 

EXAMPLE 1.

A metric synchronous belt of 10 mm pitch, profile system T, 50 mm wide, and 1 400 mm in pitch length is designated as follows:

for a single-sided belt: 50- T10- 1 400;

for a double-sided belt: 50- DG- T10- 1 400 or 50- DT-T10- 1 400.

 

EXAMPLE2 A metric synchronous belt of 5 mm pitch, profile system AT, 25 mm wide, and 500 mm in pitch

length (number of teeth = 100) is designated as follows:

for a single-sided belt: 25 - AT5 - 500 (100 t);

for double-sided belt: 25 - DG - AT5 - 500 (100 t) or 25 -DT- AT5 - 500 (100 t).

 

EXAMPLE 3

An open metric synchronous belt of 5 mm pitch, profile system AT, 25 mm wide, and 50 000 mm

in pitch length is designated as