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10" Type CTU-HD
and
14" Type LCTU-HD
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CYLINDRICAL GRINDING MACHINES
Semiautomatic or Plain
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tj NORTON p
10
yy Type CTU-HD
14
yy Type LCTU-HD
for grinding work requiring larger diameter or wider wheels than the
Heavy Duty Hydraulic
Cylindrical Grinders
Semiautomatic
J^> 18"-36"-48"-72" between centers
THESE
10 Type CTU or 14" TYPE LCTU standard Plain or Semiautomatic
Grinders will accommodate.
It is sometimes desirable to employ very wide wheels or multiple
wheels widely spaced for plunge cut operations on work
the capacity of 10" or light type 14" grinders as far as diameters
and weights of work are concerned. It is also essential on such work
as the grinding of automotive crankshaft bearings that wheels of
large diameter be used in order to permit a reasonable amount of
wheel wear
For these jobs a heavier wheel slide with larger spindle and
bearings and heavier wheel slide base having ample bearing
ways is required. These new 10" Type CTU-HD and 14"
Type LCTU-HD Grinders provide this additional wheel
capacity in addition to the many time-tested features of the
standard Type CTU Grinders.
before interferences with parts of the work occur.
machines
are designed to provide capacity
or
Plain
well
within
The descriptions and illustrations in the Catalogs on
regular 10" Type CTU and 14" Type LCTU Grinders
apply to these machines with the exception of the wheel
slides, wheel spindle and hearings, and the additional
i
L
ft
capacity for larger wheels. Detailed specifications on
these and other units of the Type CTU-IID machines
will be found on the back page of this bulletin.
Page 3
SIMPLIFIED OPERATION
All controls for feeds and speeds are set from the front of the ma
chine. This
wheel feed handwheel and a “
simplifies
both set-up and operation. A combination graduated
click-count
” indexing mechanism readily indi
cates the amount of feed as the handwheel is rotated past a fixed pointer, and
permits settings for .0001" in work diameter reduction instantly without
visual attention. Separate dwell controls for each end of table reversal, and
work jogging control, are also provided.
Additional advantages are automatic or manual control of work rotation
and coolant flow, and automatic adjustable wheel feed at table reversals with
automatic resetting of the wheel head. A pre-set table truing and grinding
speed arrangement permits independent adjustment of these speeds. After
speed settings are made, either speed is immediately obtained thereafter by
movement of a combination selector and table start-stop lever. Continual
resetting is avoided.
SIMPLIFIED MAINTENANCE
To simplify
locations on the outside of the machine. Filters, relief valves, ways lubricant
flow control valves, and the ways lubricant reservoir are also placed outside.
Electrical controls are grouped in an elevated enclosure for protection and
to afford maximum convenience in inspection. The coolant tank has a
ramped outlet for facilitating clean out, and a hinged wheel guard cover
simplifies wheel change. The base ways are protected by space-saving steel
tape-type guards.
maintenance, all pumps and motors are placed in accessible
SEMIAUTOMATIC MACHINE
The Semiautomatic Machine provides all of these advantages that sim
plify operation and maintenance, and in addition, provides an automatic
grinding cycle operating under “
electrically timed cycle, the operator merely loads the machine, touches a
control lever, and the machine goes through its cycle automatically. This
reduces manual effort to the extent that it may permit the operator to attend
more than one machine.
one-lever
” control. When operating on the
Page 4
Machine Specifications—10" Type CTU-HD and 14" Type LCTU-HD
MAXIMUM WORK CAPACITY
Maximum diam. ground with 30" wheel
Maximum diam. ground with 36" wheel
10" 14"
.10" 14"
. 8" 8"
f
GENERAL
Grinding Wheels
Standard ....
Maximum diameters and widths
(Width includes spacing collars)
Coolant
Coolant Pump capacity (gallons per min.)
Hydraulic Oil Reservoir capacity (U.S. gallons) .
Lubricating Oil Reservoir capacity (U.S. gallons)
Steadyrest capacity (diameter)
Swivel Table Adjustment (inches per foot on diameter)
NOTE-Actual tapers ground depend on wheel diameter,
work diameter and length and on the location of the taper
with reference to the pivot point.
Tank capacity (U.S. gallons)
Machine length
Maximum Taper
.
..........
...............................
, 36" x 3" x 12"
30" x 8" x 12"
36" x 6" x 12"
...
18", 36", 48", 72"
311", 211", 2", 1H"
=======
HEADSTOCK
Spindle diameter
Center diameter.
Center Taper. .. .
Work Speeds, A.C. Motor
Work Speeds, D.C. Motor
°With one belt change.
No. 14 Jamo
.................50-80-125-200 r.p.m.
...........................
30-275° r.p.m.
FOOTSTOCK
Spindle diameter
Center diameter.
Center Taper. ...
No. 14 Jamo
231"
75
25
38
311
4%"
:r.—l
4H"
131"
131"
WHEEL SLIDE
Length of bearing ways
Width of flat way
Width of V way (projected)
Overall width of ways (projected)
Lubrication
tr?
____
-v
.....................................
.................
...........................
........
.......................
Automatic Pressure
WHEEL SPINDLE
Material
Large Bearing (L.H.)
Small Bearing (R.H.)
Lubrication ...............
Errrrmr
.....................
Pleat Treated Alloy Steel
.................
.................
............
Automatic Flood
MOTORS
Wheel Drive. .
Work Drive. . . lH h.p., 1200 r.p.m., constant speed A.C. or
Hydraulic and Lubricating Pump Drive
Coolant Pump with Integral Motor
A.C.
motor
Standard Electrical equipment meets Machine Tool
Electrical equipment to Automotive Joint Industry
Conference Standards quoted on request.
. 25 h.p., 1800 r.p.m., constant speed A.C.
1/2 h.p., 690/2760 r.p.m., adjustable speed D.C.
1 h.p., 1200 r.p.m., constant speed A.C.
h.p., 1800 r.p.m., constant speed A.C.
speeds given are for 60 cycle, for 50 cycle A.C.
speeds will be 1500 and 1000
Standards.
r.p.m.
TABLE SPEED RANGE
Machine Length
Speed Range (in. per min.) 2-240 2-240 2-240 2-240
18"
36"
4r x lor
3r x 8r
48"
48r
6,V'
6"
24r
72"
BASEWAYS
Width of flat way
Width of V way (projected)
Lubrication
................
...........................
“ dooip ic, ,llii«ratior.i ,nd ..paUSc,
.........................
Automatic Pressure
...................
2r
2/2"
„„„ ln booUte C0
NET WEIGHTS (pounds)
Machine Length
10" Swing
14" Swing
,S,7th"
18"
11,450
11,800
36"
12,050
12,400
ivcn.
“« of »rt„t
48"
12,950
13,300
NORTON COMPANY • WORCESTER 6, MASSACHUSETTS
Form 807-1-53 (Supplementary to Form 1787)
72"
14,250
14,600
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