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Wrapped Narrow V Belts Wrapped Narrow V Belts

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Wrapped Narrow V Belts

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Wrapped Narrow V belts suitable for all industrial applications,particularly where space, weight and horsepower capacity are critical.
  • SPZ, SPA ,SPB, SPC, 3v, 5V, 8V

  • PIONWAY

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Product Description

Narrow V Belts (Wedge)


Properties    

 - Temperature range from -45 °C to +70 °C    

 - Oil resistant and Antistatic (ISO1813) needs special customization    

 - High performance,Long life service,Maximum economy    

 - Pulley Standards: DIN2211 – ISO 4183 (SP Series)  ,IP20/IP22 (RMA)    


Table 1

Main indicators

Polyester cordSPZ(9.5,FM)SPASPBSPC3V5V8V
Kevlar (Aramid) cord available --SPA(K)SPB(K)SPC(K)3VK5VK8VK
Upper width (mm)9.712.716.3229.51625.5
Belt height (mm)8101318813.523
Pitch width (mm)8.511141981422
 Pitch height (mm)1.92.63.54.61.93.511.3
Outer length (mm)La=Li+50La=Li+63La=Li+82La=Li+113La=Li+50La=Li+82La=Li+145
Pitch length (mm)Lw=La-13Lw=La-18Lw=La-22Lw=La-30Lw=La-13Lw=La-22Lw=La-53
Inside length (mm)Li=Lw-37Li=Lw-45Li=Lw-60Li=Lw-83Li=Lw-37Li=Lw-60Li=Lw-92
Angle40°40°40°40°40°40°40°
Weight (kgs)0.070.060.110.190.070.190.5
Minimum diameter of pulley (mm)6390140224


Max flexing rates  (s-1)   fB max100100100100100100100
Max belt speed (m/s)   V max≈55555555555555


Table 2

Construction

Functions

Materials

Features

❶ Cover fabric

Protects the inner parts of the belt
and strong abrasion on the pulley groove

Cotton fabric, Polyester,
Cotton synthetic fabric, CR Impregnated

1.Treated with highly oil and heat resistant 2.Engineered synthetic rubber 3.Specifically compounded for superior wear resistance  4.Durable and dependable

❷ Tension member

Primary material for transferring power

Polyester, Aramid

1.Specially manufactured with twisted,heat and chemically set 2.Good Dimensional stability

❸ Top compression rubber

Maintains belt shape (upper)

NR, CR

Excellent bonding to the outside fabric and tensile cords

❹ Adhesive rubber

Supports and protects tension member adhesion

NR, CR

Excellent bonding to the outside fabric and tensile cords

❺ Bottom compression rubber

Maintains belt shape (lower)

NR, CR

1.Highly engineered synthetic rubber compound   
2.Specially compounded for cool running  3. crack resistance 4.Resistant to bending stress

NR : Natural Rubber / CR : Chloroprene Rubber

 

Table 3

Main physical and mechanical performance of the belt

Item

Specification

SPZ

SPA

SPB

SPC

Elongation resistance

≥ (KN)

2.45

2.94

5.39

9.8

Anti-pullout strength of the rope

≥ (KN)

12

12

12

12

Referred elongation ratio

≥ (KN)

7

7

7

7

Exposing part of the belt above pulley

mm

 +0.8   -0.8

 +1.3   -0.6

 +1.4   -0.7

 +1.5   -0.1

 

Table 4

Manufacturing tolerances of V-belts

Nominal datum length  Ld

Permissible deviation for sections

Y,Z,A,B,C,D,E

SPZ,SPA,SPB,SPC

Ld250

+8  /  -4


>250 315

+9  /  -4


>315400

+10  /  -5


>400500

+11  /  -6


>500630

+13  /  -6

±6

>630800

+15  /  -7

±8

>800900

+17  /  -8

±10

>9001250

+19  /  -10

±13

>12501600

+23  /  -11

±16

>16002000

+27  /  -13

±20

>20002500

+31  /  -16

±25

>25003150

+37  /  -18

±32

>31504000*

+44  /  -22

±40

>40005000

+52  /  -26

±50

>50006300

+63  /  -32

±63

>63008000

+77  /  -38

±80

>800010000

+93  /  -46

±100

>1000012500

+112  /  -56

±125

>1250015000

+140  /  -70


>1500020000

+170  /  -85


 

Table 5

Belt matching tolerances

Nominal datum length  Ld

Maximum Permissible deviation between the lengths of belts of the same set sections

Y,Z,A,B,C,D,E

SPZ,SPA,SPB,SPC

Ld ≤ 1250

2

2

1250<Ld ≤ 2000

4

2

2000<Ld ≤ 3150

8

4

3150<Ld ≤ 5000

12

6

5000<Ld ≤ 8000

20

10

8000<Ld ≤ 12500

32

16

12500<Ld ≤ 20000

48

 --

 


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Office: Jinxiu International Center, Binjiang Distric,Hangzhou city, Zhejiang province, China.
 
Factory: Hongsan Rubber Industrial Park,Tiantai county,Taizhou city,Zhejiang province,China.

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