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Maintenance of Drive, Inspection of Belts

Classical V-Belts Narrow V-Belt Hexagonal Belts Harvester Combine V-belt Raw-Edged V-Belt Multi-Ribbed Belts Synchronous Belts

Home » Maintenance of Drive / Trouble Shooting

Maintenance of Drive / Trouble Shooting

V-belts are amongst the most reliable and trouble free means of power transmission. However, these drive belts require periodic inspection and maintenance, both while drive is running and while it is stationary. Few of the simple rules for the maintenance of drive belts are as follows:

Check the tension after certain time
Protect your belt from sunlight through guard
If any belt of the set fails, replace complete set

In addition to above-mentioned measures, for the proper maintenance of drive, it is recommended that always use a proper pulley, either of the recommended size or standard pulley. Make sure that pulley is quality certified and have proper grooves. It is also recommended that always use dynamically balanced pulley.

Maintenance of Drive

DIMENSIONS OF STANDARD V-GROOVED PULLEY
BELT SECTION	PULLEY PITCH DIAMETER (INCHES)	GROOVE ANGLE DEGREE ±0.5	MINIMUM OF WIDTH OF GROOVE (MM)	MINIMUM GROOVE DEPTH (MM)	CENTRE TO CENTRE DISTANCE OF EACH GROOVE (MM)	EDGE OF PULLEY TO FIRST GROOVE CENTER (MM)
SPZ	UP TO 80 OVER 80	34 38	9.70 9.90	11.00	12.0_0.3	8.00 + 1.0
A SPA	UP TO 118 OVER 118	34 38	13.00 13.30	13.30	15.0 + 0.3	10.00
B SPB	UP TO 190 OVER 190	34 38	16.90 16.90	17.50	19.0 +0.5	12.50
C SPC	UP TO 315 OVER 315	34 38	22.50 22.90	23.80	25.5 + 0.4	17.00
D	UP TO 475 OVER 475	36 38	32.30 32.60	28.00	37.0 +0.8	24.00
E	UP TO 630 OVER 630	36 38	38.30 39.60	33.00	44.5 +0.7	29.00

Trouble Shooting

Some of the common belt problems and their causes are listed below along with the remedial measures. However, it is always recommended to get the help of a technical hand from the respective field for any kind of repair and replacement work.

PROBLEMS	PROBABLE CAUSES	REMEDIES
CUT OR CRACK FROM INNER SIDE	Pulley diameter less than minimum recommended Excess belt slip Temp. too high on the drive	Selection of proper drive Check belt tension and number of belts. Save belt from heat through different means
BELT TURNED OVER	Foreign particle on the pulley Very high tension to belt Excess belt flap Jerk load Pulley groove not proper Misalignment	Save from foreign particles Re-tensioning Use idler Tension should be proper Use correct pulley Do proper alignment
WEAR OUT	Pulley groove not proper Mismatched belts Pulley size not proper Misalignment Due to slip Foreign material	Use correct pulley Use preset belts Use recommended pulley size Align properly Tension properly Remove foreign particles
BELT BREAKS	Foreign obstruction Less number of belts Wrong belt selection Jerk load Belt installed over pulley forcefully	Install guard on the drive Use complete set as per real design of the drive Use proper belt section as per drive requirement Check belt tension and design Reduce centre distance then install and tension
EXCESS ELONGATION	New and old belts Belts of different manufacturers Belts of different codes	Change complete set Use complete set of one manufacturer Use preset belts on the drive

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