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MODEL 7HDD LEES BRADNER SPUR & HELICAL VERTICAL GEAR HOBBER

GEAR HOBBER
Model:
7HDD
Year:
1967
Stock #:
6487
MODEL 7HDD LEES BRADNER SPUR & HELICAL VERTICAL GEAR HOBBER

Maximum work piece diameter (with 3" dia. Hob) 8"
Maximum travel of hob slide 20"
Maximum pitch 4 D.P.
45 Degree L.H. or R.H. Helix angle
Maximum distance face of work spindle to -
tailstock center 33"
Diameter of hole thru spindle 1.625"
Maximum hob shift 3.5"
Maximum hob diameter 4"
Maximum hob speed 3 to 1 ratio 400 RPM
Work spindle taper No. 14 B&S
Index worm & wheel ratio 54-1
Approximate weight 7,500 Lbs.

MOTOR SPECIFICATIONS

5 HP Spindle drive motor & pendant control
2 HP Rapid traverse motor
1/3 HP Lubrication pump motor

Double differential mechanism
Automatic hob shift
Plunge feed (helical gear capabilities)
Load and unload fixture
Chip conveyor
Coolant system

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