CompAir 5280D.1.IAC Operator's Handbook Manual page 131

VEE DRIVE PARTS
FLYWHEEL
MOTOR PULLEY SPB Ø224 PCD
TAPER LOCK BUSH
WEDGE BELTS SPB 4500 - 8 OFF
It is very important that the driving and driven pulley grooves are in line and both pulley shafts are parallel,
see above, if the pulley faces are not parallel use appropriate size distance pieces to ensure belt grooves are
correctly aligned. Check belt tension by method below.
When fitting new belts spin drive by hand for 3-4 revolutions, taking care not to trap fingers. Tension belts to
1.25 setting forces see table 1. Run drive under load for 15-20 minutes. Stop and check tension reset to basic
value. If problems are experienced with belts turning over the 1.25 setting force may be maintained.
Table 1 : Drive belt tensioning
Setting force required to deflect belt 16 mm per metre of span
Belt Section Small Pulley
Ø mm
SPB 160 to 224
SPB 224 to 355
VEE DRIVE PARTS & BELT ADJUSTMENT
CENTRE DISTANCE mm
RECOMMENDED TENSIONING FORCES
Basic setting force.
Newtons (N)
35 to 50
50 to 65
CompAir UK Ltd
PULLEY PCD
PART NUMBER
TC39633.7
Y193461.002
98074.1364
98080.1450
1.25 X setting Basic setting force
force. Kilogram (kgf)
Newtons (N)
43.75 to 62.5 3.5 to 5.1
62.5 to 81 5.1 to 6.6
PUBLICATION APP012-5280
Page 1
BELT TENSION INDICATOR
APPLIED TO MID-SPAN
see Table 1
BELT DEFLECTION
STRAIGHT EDGE
1.25 X Initial setting
force
Kilogram (kgf)
4.4 to 6.3
6.3 to 8.3
App012-5280.doc