Toro Reelmaster 5510 Series, Service Manual

Page: 572 / 662

Preparing the Reel for Grinding (continued)
Three types of cutting reel designs are used in cutting units for Reelmaster
machines: scalloped radial reel, tapered radial reel, and tapered forward swept
reel. The different types of individual reel blades are shown in
Figure 347 . The
radial reel designs have blades that are placed in line with the center of the reel
shaft. The rear of the blades either have a scalloped relief or a tapered relief. The
forward swept reel have blades that have a slight forward slant. The rear of the
forward swept reel blades have a tapered relief. Before grinding a reel, ensure to
identify the type of reel design to ensure that the grinding is correctly done.
Before grinding a cutting reel, ensure that all the cutting unit components are
in good condition. Depending on the type of grinder used, damaged cutting
unit components can affect grinding results. When grinding, be careful to not
overheat the cutting reel blades. Remove small amounts of material with each
pass of the grinder.
Follow the reel grinder manufacturer’s instructions to grind the cutting reel to
Toro specifications; refer to the
Reel Grinding Specifications Table (page 9–42) .
Additional reel grinding information can be found in your Cutting Unit Operator’s
Manual and the Toro General Service Training Book, Reel Mower Basics (Toro
Part No. 09168SL) found on the Service Reference Set available from your
Authorized Toro Distributor.
Reel Grinding Specifications Table
5 inch Dia.Reels 7inch Dia.Reels
Reel diameter (new) 128.5 mm (5.060 inches) 179.3 mm (7.060 inches)
Service limit-reel diameter 114 mm (4.500 inches)
for 5 inch reel
168 mm (6.600 inches)
for 7 inch reel
Reel shaft diameter (outer
diameter) 33.3 mm (1.313 inches)
Service limit-reel diameter
taper (
Figure 348 )
0.25 mm (0.010 inch)
Blade land width 1.3 to 1.8 mm (0.050 to 0.070 inch) Service Limit:
3 mm (0.120 in)
Blade relief angle 30° ± 5°
Relief grind the reel blades to the minimum blade land width if the reel blade land
width exceeds the service limit. Spin grind the reel to restore its cylindrical shape.
Note: Spin grind the reel and establish the specified blade land width after relief
grinding.
After grinding the reel and/or bedknife, adjust the cutting unit; refer to the Cutting
Unit Operator's Manual . Check the reel to bedknife contact again after cutting
two (2) fairways. During this initial use, any burrs will be removed from reel
and bedknife which may create improper reel to bedknife clearance and thus
accelerate wear. This practice of re-checking the reel to bedknife contact after
grinding will extend the longevity of the sharpness of the edge of the reel and
the bedknife.
Cutting Unit: Service and Repairs Page 9–42 Reelmaster ® 5410/5510/5610 Series
15216SL Rev C