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MILLERS, ROTARY, VERTICAL SPINDLES (Also See Millers, Vertical)

No. 5A Holroyd, pump rotor miller machine, tlstk, steady rests, hyd.& coolant sys, 1972

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No. 5A Holroyd, pump rotor miller machine, tlstk, steady rests, hyd.& coolant sys, 1972
HOLROYD
MODEL #5A
NEW:1972

The machine is of modern design and incorporates most improvements
which HOLROYD developed, such as: "possibility to use conventional
high-speed steel cutting tooling, as well as Tungsten-Carbide indexing-tip inserted blade cutters in the climb-milling mode."
"Automatic backlash take-up" is provided. The cutter-head is of
extra rugged construction. The cutter spindle is ridgidly supported in opposed taper roller bearings and thru the use of a flywheel, a damping effect and smooth cut are imparted to the mounted cutters. Maximum effect has been exercised in making changes in settings and adjustments easy and effortless, without disturbing alignments and/or accuracy. Most of the fuction controls are duplicated on the machine, in front, and in the rear, for maximum operator convenience.

SPECIFICATIONS:
Diameter of Work 25"
Max Traverse of Workslide 50"
Max Lead 98.5"
Min Lead 6"
Max Lead Angle (RH & LH) 60 degrees
Work Feed Rates 1"-11 1/4"/min
Quick Traverse Speed 67" /min
Max Distance Spindle Flange to Tailstock Ctr 68.5"
Min Distance Spindle Flange to Cutter Center 14.5"
Max Dia of Cutter (19 1/2" Head) 19.5"
Max Dia of Cutter 12" Head 12"
Cutter Speeds 19 1/2" Head, Infinitely Var 20-120 RPM
Cutter Speeds 12" Head, Infinitely Variable 30-180 RPM
Diameter of Hole through Workspindle 8"x33" Deep
Power Rotation of Work Spindle 2 RPM
DC Cutter Drive Motor 10-60 HP 7 1/2 - 45 KW
Hydraulic Infeed Motor 2 HP 1.5kW
Angle Setting Motor 2 HP 1.5 kW
Feed Drive Motor 3 HP (DC) 2.2 kW
Quick Traverse Motor 6 HP 4.5 kw
DC Divide Pre-Load Motor 3.5 HP 2.6 kW
Oil Pump Motors (2) 1/2 HP .37kW
Coolant Pump Motor 1/2 HP .37kW
Slow Infeed Motor 1/2 HP .37kW
Diameter of Cutter Spindle 4"
Support Swivability - left/right 60 degrees
Floor Space (5.8 meters) 17'6" x 19' x 5.3
Weight of Machine 26 tons
Dimensions 16' x 13'3" approx

Machine is equipped with:
- full complement of electrics (motors/controls)
- automatic forced feed lubrication to all working elements
- assortment of change gears
- tailstock assembly w/centers
- work supporting steady rests
- assortment of work holders, arbor drivers, etc
- self contained hydraulic system
- self contained coolant system
- guards, covers
- operators manaul, wiring & hydraulic diagrams



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