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PU Timing Belt Endless

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PU timing belts are manufactured in thermoset polyurethane by a unique moulding process. The high-grade polyurethane gives superior wear and abrasion resistance.


Several type of cords, helicoidally rolled up inside the belts, assure excellent dimensional stability and offer high performances in terms of flexibility and traction resistance.


PU timing belts represent a modern and efficient of power transmission. They are used of belt teeth gear in mesh to transmit the drving force. PU timing belts are particularly suitable for power transmission applications.


Mechanical features

• Consistent dimensional stability

• Low pre-tension

• Low noise

• High abrasion resistance

• Low maintenance

• High flexibility

• Linear speeds up to 80M/SEC


Chemical features

• Anti-Ageing, Hydrolysis, UVA, Ozone

• Working temperature range-30°C to +80°C (up to +110°C for short period)

• Hiah resistance to oil, fat and grease

• Good resistance to most acids and alkalis


Application areas

• Office automation equipments

• Medical equipment

• Packaging machinery

• Swimming pool cleaning robots

• Plotters

• Money changers

• Optical instruments

• Robotic arms

• Electric appliances

• Vacuum systems

• Vending machins

• Food machinerv

• Textile machinery

• DIY equipments


Technical parameters

Item/Unified labeling

A6

A7

A8

A9

Hardness

65±5

75±5

85±5

>90

(kg/cm²)Strength

>30

>50

>70

>120

(kg/cm²) Tensile strength

>250

>350

>400

>450

(%)Elongation at break

>500

>450

>450

>450

(%)Permanent deformation

<15

<15

<15

<15

(kg/cm²)Tear strength

>30

>45

>75

>90

(%)Impact rebound

>15

>15

>15

>15

(℃)Brittie temperRture

<-50

<-50

<-50

<-50

(cm³/1.6km)wear

<0.05

<0.05

<0.05

<0.05

Aging coeficlent (100C*24Hour )

>0.9

>0.9

>0.9

>0.9

water resistance coefficiant( 70℃*24Hour )

>0.8

>0.8

>0.8

>0.8

Resistanco No.120 petrol+benzene(15~25℃24Hour )

<+0.2

<+0.2

<+0.2

<+0.2

Resistnneo on the 20th oil( 70℃±2℃*24Hour)

<+0.4

<+0.4

<+0.4

<+0.4



Items

T type

ARC Type

XL L   H  XH XXH   3M     5M   8M   14M 20M

N/mm2Tension strength

80

120

270

380

450

90

160

300

400

520

Elongation at break

N Reference tensile

60

90

220

300

360

70

130

240

320

410

%≤Elongation %

4.0

Belt back hardness

75土5

N/mm≥Fabric bonding strength

5

6.5

8

10

12


6


12

15

N/mm≥Core rope bounding strength

200

380

600

800

1500


400

700

1200

1600

N/mm≥Teeth shearing strength

50

60

70

75

90


50

60

80

100



Belts & Pulleys Selection Referance

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With over 30 years of experience in manufacturing timing belts, Unbelt has been innovating, Making it a global leader in high-end, High-quality products.
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