Sterling SXS Series Belts, Checking the tension force of the V-belt, Centres and 16mm sag

8.Pivot the screen support into the working position and fasten using mounting screws.

9.Close the machine door.

10.Shredder can be started again.

(Please refer to image from “Emptying the Screen”.)

V-Belts

V-belts are wearing parts that stretch and must be re-tensioned. Regular checks on the tension force of the V-belts and the condition of the V-belts are necessary in order to guarantee a long service life of the V-belts.

Checking the tension force of the V-belt

1.Remove the V-belt cover.

2.Measure the distance between the roller centres.

3.Determine the belt sag force F for each belt at 16 mm sag if sag "b" is equal to 1 m distance between roller centres. Do this by measuring the distance between roller centres at a right angle to the V-belt.

		Force required for 1m distance between roller
		centres and 16mm sag
Profile section	Efficiency of x in	P in Newton		P in lbs
	mm
SPA	100 - 132	20	- 27	4,4	- 5,9
SPA	140 - 200	27	- 35	5,9	- 7,7
SPB	160 - 224	35	- 50	7,7	- 11
SPB	236 - 315	50	-65	11 - 14,3
SPC	224 - 355	60	- 90	13,2 - 19,8
SPC	375 - 560	90	- 120	19,8 - 26,4
XPB	224 - 250	25	- 35	5,5	- 7,7

4.Compare determined value with the value in the above table. If the value lies below the lowest tolerance limit, the V-belt must be re-tensioned. If the value lies above the highest tolerance limit, the V-belt must be relaxed.

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