Raymarine Rotary Drive Installation Manual page 12

Rotary Drive - Installation Guide
Obtaining the steering sprocket
Obtain the appropriate sized steering sprocket from the steering
system manufacturer.
Obtaining the drive sprocket
Your Raymarine dealer can supply the following drive sprockets
3
(suitable for a inch pitch chain):
/
8
• 13 tooth: part number M81182
• 15 tooth: part number M81183
• 17 tooth: part number M81184
• 19 tooth: part number M81185
• 25 tooth: part number M81186
CAUTION:
To stop the drive sprocket rotating on the drive shaft, the shaft
1
has a inch square projection (a woodruff key) that fits into a
/
8
notch (or keyway) at the centre of the sprocket. If you use a non-
Raymarine drive sprocket, its bore and keyway dimensions must
fall within the ranges specified in Figure 5 for it to lock correctly
to the drive shaft.
3.22 mm – 3.24 mm
(0.127 in – 0.1275 in)
keyway
grub screw
19 mm
(0.75 in)
Figure 5: Sprocket bore and keyway dimensions
15.89 mm – 15.9 mm
(0.6256 in – 0.6275 in)
bore
9.46 mm – 9.61 mm
(0.3725 in – 0.3785 in)
12.7 mm
(0.5 in)
D5084-1
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