EXCELLO MODEL 120 EXTERNAL THREAD & BALL SCREW GRINDER

Max. diameter work ground with 18" wheel 8"
Max. diameter work ground with 14" wheel 12"
Max. diameter swing over table 19"
Max. diameter work inserted through work spindle 6 1/2"
Max. work length between centers 144"
Max. threaded portion of work from headstock
center 120"
Grinding wheel size 18" Maximum
13" Minimum
Up to 2" Wide
9" Diameter hole
Grinding wheel speeds 900 - 1580 RPM in 10
Steps or
1485 - 2640 RPM in 10
Steps
Wheel drive motor (standard) 3 HP, 1800 RPM
Main drive motor 3 HP, 1200 RPM
Coolant pump motor 1 1/2 HP, 3600 RPM
Dresser motor 1/10 HP, 1800 RPM
Lubrication motor 1/10 HP, 1800 RPM
Work spindle speeds, grinding & rapid traverse Variable to 200 RPM,
depending on gear
setup
Threads per inch with standard gears 1 to 64
Maximum lead obtainable with special gears 6.000"
Lead accuracy +/- .002" per inch
+/- .001" per foot
Maximum helix setting 30 Deg. RH or LH
Maximum lead control per foot +/- .005"
Automatic wheel feed .165" Total on work dia
,
in increments of .001
-
.030"
Cont. on

(cont.)
Automatic dresser feed .0004 Minimum
.010" Maximum on
wheel diameter
Manual index for 2,3,4,5,6,8,10, and 12 division
Coolant tank capacity 150 Gal.
Coolant pump capacity, approx. 20 GPM
Hydraulic reservoir capacity 20 Gal.
Approx. weight 35,000 LBS
Approx. weight boxed for domestic shipment 37,000 LBS37,000 LBS