Tensioning Of V-Belts - HLU HF R 48 R Series Operating Manual

RV 28-... R | up to size 355
Nominal fan 1000 1500
size
min-1 min-1
RV 28-355 R
RV 28-400 R
RV 28-450 R
RV 28-500 R
7000 h 5000 h 3500 h 2000 h 1250 h 900 h
RV 28-560 R
6500 h 4500 h 3500 h 1800 h 1100 h
RV 28-630 R
6000 h 4000 h 3000 h 1500 h 1000 h
RV 28-710 R
5500 h 3500 h 2500 h 1250 h
RV 28-800 R
5500 h 3500 h 2500 h 1250 h
RV 45/63-... R | up to size 355
Nominal fan 500
size
min-1
RV 45/63-400 R
RV 45/63-450 R
RV 45/63-500 R
RV 45/63-560 R
RV 45/63-630 R
6500 h
RV 45/63-710 R
6500 h
RV 45/63-800 R
6000 h
RV 45/63-900 R
6000 h
RV 45/63-1000 R
5500 h
RV 45/63-1120 R
5500 h
RV 45/63-1250 R
5500 h

8.3 Tensioning of V-belts

Pretension of V-belts
Deflect a belt (the central belt with multiple-groove pulleys) at right angles to the free belt side by
means of a spring balance. Measure the deflexion using a centimetre ruler. A required deflexion
(Ea) of 17 mm per 1000 mm of free belt side length was determined. The required deflexion is
calculated by means of the following simplified equation:
(e = Centre distance)
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Operating manual
Centrifugal fans
HF R | RV | MRV
Fan speed
2000 2500 3000
min-1 min-1 min-1
3500 h 2000 h 1500 h 1000 h 800 h
3500 h 2000 h 1500 h 1000 h 800 h
3500 h 2000 h 1250 h 900 h
Fan speed
750 1000 1500
min-1 min-1 min-1
3500 h 2000 h 1500 h
3500 h 2000 h 1500 h
3250 h 1800 h 1250 h
maintenance-free
4500 h 3200 h 1750 h 1100 h
4500 h 3200 h 1750 h 1100 h
4000 h 3000 h 1500 h
4000 h 3000 h 1500 h
3500 h 2500 h 1250 h
3500 h 2500 h 1250 h
3500 h 2500 h 1250 h
Quantity
3500 4000 4500
of grea-
min-1 min-1 min-1
700 h
700 h
2000 2500 3000 3500
min-1 min-1 min-1 min-1
1000 h 800 h 700 h
1000 h 800 h 700 h
900 h
sing
10 g
10 g
11 g
11 g
16 g
19 g
21 g
21 g
Quantity
of grea-
sing
10 g
10 g
11 g
16 g
16 g
19 g
19 g
24 g
24 g
24 g
31
06.2019