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15-5 POWER TRANSMISSION TO DRIVE MACHINES
15-5-1 BELT DRIVE
Note the following:
●
Use a V-belt rather than a flat belt.
●
The drive shaft of the engine must be parallel to the drive shaft of the driven machine.
●
The drive pulley of the engine must be in line with the driven pulley of the machine.
●
Install the engine pulley as close to the engine as possible.
●
If possible, span the belt horizontally.
●
Disengage the load when starting the engine.
*
A belt tensioner or similar should be installed if no clutch is used.
15-5-2 FLEXIBLE COUPLING
When using a flexible coupling, run-out and misalignment between the driven shaft and the engine shaft
should be minimized.
The permissible margin of run-out and misalignment is specified by the flexible coupling manufacturer.
15-5-3 BELT PULLEY INSTALLATION ONTO
KEYWAY-TYPE CRANKSHAFT
When installing the belt pulley and/or clutch onto
keywaytype crankshaft (PTO shaft), proper and
correct arrangements are needed. The following
illustration shows the correct installation of the
applicable component parts.
■
Metric keyway-type crankshaft
Washer; Use the washer (material; SS41P) with the
thickness described below;
Bolt; Select the proper bolt and tighten it to the
specified tightening torque, as mentioned
below;
Pulley
Bolt
Washer
PTO shaft
Key
Fig.15-1
EX35/40
020-01002-20, Washer
6.0
40
10.5
SS41P
6.0 or over
Washer Thickness
ROBIN genuine part
mm
Thickness; mm
OD;
mm
ID;
mm
Material;
“8T” or higher
Effective thread length
Strength
EX35/40
18 to 27
40 - 50
(408 - 510)
011-01003-00, Flange Bolt
30
(Screw length; mm)
ROBIN genuine parts
Tightening Torque
mm
N•m(kgf•cm)
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