Raw Edge Cogged v Belts

Raw edge V-Belts are also know as Cut edge Belts or simply Cut Belts.As the name signifies,the edges(sidewalls) are cut from the sleeves and the sidewalls are not covered i.e. they are raw. There is no fabric wrapping on the sides are in the same of normal belts.Again Raw Edge Plain(REP),Raw Edge Laminated(REL) and Raw Edge Cogged(REC)

Raw Edge Plain belt has one or two fabric layers situated above the cable cord and the bottom edge might or might not have a single fabric layer.

The efficiency of these belts has been so overwhelming attractive that these belts have started rapidly peplacing other types of belts in the class of application foe which they are suitable.

The cogged underside of the Raw Edge Cogged belts reduces bending resistance significantly,therby enabling use of pullrys with even smaller diameters upto 20% less than for the same type of application.Further the decreased bending resistance reduces mechanical losses during bending.This means improved power transmission,lesser heat buildup and also reduced working temperature.Heat dissipation is expedited as the belt has a large surface area per unit length.lastly heat transfer is also accelerated due to cogs inducing turbulence in the surrounding air resulting in a swirling action which enhances cooling.Pullet and bearings run cooler on account of this.

The absence of fabric wrapping on the isdes allows more space for the cable cord reinforcement leading to higher rating for the same cross section.The absence of Fabric reinforcement joints normally found in the wrapped belt leads to smoother running.Further,Raw edge belt base consists of anisotropically oriented fibre filled rubber composite which improves transverse rigidity and traction.All these add up to bettre performance of not only the belt but also the pulley bearing.

The lighetr and stronger construction of Raw edge belts enables surface speeds upto 45 meters/second for raw edge belts of the wedge belt design and 35meters'secong for Raw edge classical design belts.All these add up ro compactness,considerably increased power rating,longer life,cooler running and lesser power loss or a combination of all.

Special Features

Top Layer:Specially woven poly-cotton fabric rubberished with Polychoroprene rubber which imparts ozone resistance and hence better resistance to flex crack development.

Cord:Special adhersive treated-High Modulus-Low Stretch(HMLS) polyster cable cord provides high tensile strength with minimum stretch which in turn gives V-Belt with good tension retention,superior resistance to fatigue and shock loads.

Compound:

a)Polychloroprene used throughout the belt provides oil ad heat resistance.

b)Fiber filled polychloroprene based compaund gives increaesed power transmission capability,superior transverse stiffness and high wear resistance.

Precision:

The edges are precisely cut and ground to exact dimensions to ensure uniform fit along the sides of the pulley grooves.

Properties:

1.  Very high flexibility due to moulded cogs.

2. Excellent trensverse rigidity beacuse of polychloroprene rubber based compound with an isotropic fibre orientation.

3. Very low Stretch due to use of lenght stable polyester cords.

4. Higher power rating of upto 30% over wrapped V-Belts.

5. Low slip due to bettre arc of contact and pulley to belt gemoetrical relationship

6. Energy loss reduced to absolute minimum.

Advantages:

Cogged belts offer advantages to the existing users of V-Belts wanting to replace conventional wrapped belts with cogged belts as well as to the designers of new drivers.

Replacement Drives

a)No drive modifications are necessary to accomodate cogged belts on the existing pulley.

b)Three times more life: The higher power rating of powerflex means that they have more KW hours built into them.So they last three times longer when replacing conventional wrapped V-Belts using excisting pulleys.

c)Energy saving.Field tests under actual working conditions have shown an energy saving of as much as 6%.Less Enegy is wasted because of the combination of moulded cog and Raw Edge construction,which allows Cogged belts to bend more easily along the pulley.

New Drives

a)Less numbe of belts.Teh cogged belts transmit 28-30% more Kw Per Belt and therefore the number of belts for the same drives may be reduced from 4 to 3 or 3 to 2.

b)Small pulley diameter can be used due to greater flexibilty.

100. Drive rations of 1:12 are possible which can eliminate multistage drives.

     Over and above these benefits.The 'Fit and Forget' "PB” specification also apply to

     PowerFlexwhich means no re-tensioing and no matching of codes.

Available in Section ZX,AX,BX,CX,SPZX,SPAX,SPBX,SPCX for industrial applications and Section 13A,15A,17A and 20A for HEMM application.

Energy Earning through cogged belts:

Powerflex Raw Edge Cogged Belts ensure energy savings of 3­6% over conventional wrapped

belts.this is achieved due to:

• Moulded construction reduces slippage to minimum.Power consumed per unit output

reduced.

• Reduced tension required to transmit same power compared to wrapped belts.

• The higher power carrying capacity of the cogged belts ensures that the drives are more

load on the bearing is reduced.

Energy saved is earned and more and more industries are switching over to cogged belts.

Cummins		Komatsu
Section	Cross - Section (mm)	Section	Cross - Section (mm)
11A 13A 15A 17A 20A	11.9 x 8.0 13.6 x 9.4 16.7 x 10.3 18.3 x 11.0 21.5 x 12.7	MX TX	18.5 x 12.5 25.4 x 14.5

 

Cummins Engines
11A1092 13A965 15A800 15A889 15A1003 15A1270 15A1549	17A1015 17A1118 17A1145 17A1156 17A1892	20A1003 20A1092 20A1130 20A1207 20A1245 20A1283 20A1308 20A1397	20A1460 20A1560 20A1727 20A1791 20A1867 20A2070 20A2200 20A2235

 

BEML Komatsu Engines
MX30	BX28 BX50 BX56	CX58 CX68 CX70 Cx72	TX59 TX65 TX67 TX68 TX71 TX78 TX81