Poly V-Belts / Ribstar G / Ribbed V-Belts

Poly V-Belts / Ribstar G / Ribbed V-Belts
Poly V-Belts / Ribstar G / Ribbed V-Belts Poly V-Belts / Ribstar G / Ribbed V-Belts

In the world of mechanical engineering, demands for higher levels of efficiency, for more features and functions and for longer-lasting products have all risen as a result of a sea change in materials. The MITSUBOSHI "Ribstar", a ribbed V-belt for industrial applications, was developed and created in order to meet such requirements. Only after production is the profile cut into the belt so as to guarantee a product steeped in unchanging top-class quality.

KK-Select download

Special Designs

Special rubber compounds such as EPDM and tensile cords made of aramid are available on request.

The characteristics of V-belts that are conducive to high power transmission and the flexibility of flat belts join forces in these special belts and excel even more thanks to the following properties:

  1. Efficient running at high speeds
  2. Operation possible on small diameter pulley wheels
  3. Excellent heat resistance and friction resistance
  4. Suitable for compactly-designed applications
  5. Only slight belt vibration
J PK L
a 2,34 x N 3,56 x N 4,70 x N
b 3,80 5,00 7,50
P 2,34 3,56 4,70
θ(°) 40 40 40
N = Number of ribs
All specifications in mm
Belt material Chloroprene  
Belt type Polished profile  
Length tolerance ISO 9982  
Tensile member Polyester  
electrical conductivity yes  
Temperature range -30°C bis + 80°C  
Wear resistance normal  
reenforced on request  
max. speed 45 m/s  
Multi V-Belt available? ja  
Weight J: 0,01 kg / Rib-Meter  
K: 0,02 kg / Rib-Meter  
L: 0,04 kg / Rib-Meter  
Size code Effective
Diameter
(mm)		 Size code Effective
Diameter
(mm)		  
180J 457 360J 914  
190J 483 370J 940  
200J 508 375J 953  
210J 533 380J 965  
220J 559 390J 991  
235J 597 400J 1.016  
240J 610 410J 1.041  
245J 622 420J 1.067  
250J 635 430J 1.092  
260J 660 440J 1.118  
270J 686 450J 1.143  
280J 711 460J 1.168  
290J 737 480J 1.219  
300J 762 490J 1.245  
310J 787 510J 1.295  
315J 800 530J 1.346  
320J 813 550J 1.397  
330J 838 580J 1.473  
340J 864 610J 1.549  
345J 876 650J 1.651  
350J 889 730J 1.854  
Size code Effective
Diameter
(mm)		 Size code Effective
Diameter
(mm)		  
PK 600 600 PK 1250 1250  
PK 615 615 PK 1280 1280  
PK 630 630 PK 1320 1320  
PK 650 650 PK 1360 1360  
PK 690 690 PK 1400 1400  
PK 710 710 PK 1450 1450  
PK 730 730 PK 1500 1500  
PK 750 750 PK 1550 1550  
PK 775 775 PK 1600 1600  
PK 800 800 PK 1650 1650  
PK 825 825 PK 1700 1700  
PK 850 850 PK 1750 1750  
PK 875 875 PK 1800 1800  
PK 900 900 PK 1850 1850  
PK 925 925 PK 1900 1900  
PK 950 950 PK 1950 1950  
PK 975 975 PK 2000 2000  
PK 1000 1000 PK 2120 2120  
PK 1030 1030 PK 2240 2240  
PK 1060 1060 PK 2360 2360  
PK 1090 1090 PK 2500 2500  
PK 1120 1120 PK 2650 2650  
PK 1150 1150 PK 2800 2800  
PK 1180 1180 PK 3000 3000  
PK 1220 1220  
Size code Effective
Diameter
(mm)		 Size code Effective
Diameter
(mm)		  
345L 876 600L 1.524  
350L 889 615L 1.562  
355L 902 635L 1.613  
360L 914 650L 1.651  
370L 940 655L 1.664  
375L 953 675L 1.715  
380L 965 680L 1.727  
385L 978 690L 1.753  
390L 991 725L 1.842  
395L 1.003 750L 1.905  
400L 1.016 765L 1.943  
405L 1.029 780L 1.981  
410L 1.041 815L 2.070  
415L 1.054 835L 2.121  
420L 1.067 845L 2.146  
425L 1.080 865L 2.197  
430L 1.092 880L 2.235  
450L 1.143 915L 2.324  
460L 1.168 930L 2.362  
480L 1.219 975L 2.477  
500L 1.270 990L 2.515  
540L 1.372 1065L 2.705  
560L 1.422 1120L 2.845  
565L 1.435 1150L 2.921  
570L 1.448  
         
Only available on order  

Alongside our wide standard range of this product, we also craft in our ateliers high-precision drawing parts and customised special pulley washers. With all our products we offer a comprehensive service ranging from the manufacturing of mechanical processing parts and gearing components right up to the mounting of finished systems and assembly units.

Pre-Tensioning The Belt Correctly

Firstly the belt always has to be tightened in line with the calculated pre-tensioning force and checked after a running-in period of about 5 minutes. The belt is then to be retightened according to the relevant value, should it have shifted or altered its position in any way. Finally after a further 8 hours of operating, the belt is to be once again inspected and, if necessary, tightened to comply with the required value that has already been calculated.

Causes of failure and corrective measures can be found in the following document:

Troubleshooting for power transmission products

Belt length
mm		 minimal
adjustment
for installation (mm)		 Required
adjustemnt range
for tightening		  
J L  
up to 508 10,16 7,62  
up to 508 - 1016 12,70 12,70  
up to 1016 - 1524 15,24 22,86 17,78  
up to 1524 - 2032 15,24 22,86 22,86  
up to 2032 - 2540 17,78 25,40 27,94  
up to 2540 - 3048 20,32 27,94 33,02  
up to 3048 - 4064 30,48 43,18  
up to 4064 - 5080 33,02 55,88  
up to 5080 - 6096 35,56 66,04  
up to 6096 - 7620 83,82  
up to 7620 - 9144 99,06  
up to 9144 - 10668 116,84  
up to 10668 - 12192 132,08  
up to 12192 - 13716 147,32  
up to 13716 - 15240 165,10