Holroyd Model 5A Rotor Miller, Heavy Duty, 25″ Dia, X 50″ Max Length, Tailstock, will utilize 20″ diameter cutter, New Electrics in 1996

Category: MILLERS, THREAD

Reference Number: 3847

Description:

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 function controls are
duplicated on the machine, in front, and in the rear, for maximum operator convenience.

SPECIFICATIONS:
Max. Wheel 25″
Milling Length 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 19.5″
Max Dia of Cutter 12″ Head
Cutter Speeds Infinitely Var 20-120 RPM
Cutter Speeds Infinitely Variable 30-180 RPM
Diameter of Hole through Workspindle 8″x 33″ Deep
Power Rotation of Work Spindle 2 RPM 
DC Cutter Drive Motor 10 to 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 

Machine Features/Equipment
– Complete electrical upgrade in 1996 including motors/controls
– One 4 inch cutter arbor
– 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 manual, wiring & hydraulic diagrams

Machine is presently located in our warehouse in Statesville NC. for inspection

For any questions contact Rich Piselli

E-mail: rich@pisellient.com

Phone: 704.609.0766