Excellent BOURN & KOCH 25H | GEAR HOBBERS (CNC)

Bourn & Koch Model 25H CNC Four Axis Hobbing Machine
Model 25H s/n 25H3760596

this CNC machine was specifically designed to hob gears of small diameter.
the machine allows you to cut very small pitch gears if required

CNC axis and , including electrical
equipment and motors as follows:

Hob RPM Servo Motor ("B" Axis)
Work RPM Servo Motor ("C" Axis)
Radial Feed Servo Motor ("X" Axis)
Axial Feed Servo Motor ("Z" Axis)

Electrical Panel and Controls wired for
230/460 Volts, 3 phase, 60 cycle Current

SPECIFICATIONS
BASIC CAPACITIES
Maximum Coarseness ....................................... 24 NDP
Maximum Work Diameter ....................................... 1.0"
Maximum Hob Diameter ........................................ 1.0"
Maximum Hob Width ............................................ .5"
Maximum Hob Swivel ................................ 30 deg L or R
Quality-depending upon blanks & hob ..................... AGMA 10

KEY DIMENSIONS AND LIMITS OF MACHINE FUNCTIONS
Distance: Workspindle Face to Tail Center, Maximum .......... 7.0"
Hob Speed Range ................................. 750 to 3000 RPM
Automatic Single or Double Cut Cycles with speed and feed change between cuts.
Crown Hobbing or Taper Hobbing Cycles
Distance: Work Spindle Face to C.L. Hob Spindle
(Dependent upon Center Distance and Helix Angle)
Maximum ..................................................... 7.0"
Minimum ..................................................... 2.0"
Distance: C.L. of Workspindle to Hob Spindle
Maximum ..................................................... 1.6"
Minimum ...................................................... .1"
Maximum Hob Shift Travel ..................................... .4"
Work Spindle Dimensions:
Maximum Speed ............................................ 400 RPM
Overall Diameter ........................................... 2.25"
Bore Diameter............................................... .500"
Work Spindle Bolt Circle (4) #10-32 UNF ....................1.625"
Indexing Work Spindle Gear P.D. ............................. 5.0"
No. of Teeth ............................................ 2 - 999
Machine Dimensions (LxHxD) ..................... L=30" H=21" D=30"
Cabinet Dims for Machine Mounting and Electrics (LxHxD) . L=30" H=29" D=30"
Approximate Net Weight .................................. 900 lbs.

AXIS SPECIFICATIONS
------------------------------------------------------------------
X AXIS Z AXIS B AXIS C AXIS
------------------------------------------------------------------
HOME POSITIONS....... 1.5000" .... 2.0000" .... N/A .... 0.000 Deg
TOTAL AXIS TRAVEL.... 1.4750" .... 5.0000" ... 360 Deg ... 360 Deg
Rotary Rotary
Roll-Over Roll-Over

SOFTWARE (PLUS)...... 1.6000" .... 2.0000" .... N/A ....... N/A
LIMITS (MINUS)....... .1250" .... 7.0000"

MAXIMUM SPEEDS.......100 IPM......100 IPM.....3000 RPM......400 RPM
MANUAL JOG RATE......10 IPM.......10 IPM........5 RPM.......10 DPM
MANUAL JOG RAPID.....100 IPM......100 IPM.......20 RPM......100 RPM

STANDARD FEATURES
Four (4) Axis CNC Controls programmable by menu using Bourn & Koch 921 CNC
Controller. Operator inputs all gear data by keyboard, or by downloading
through an RS 232 interface.

Bed designed with anti-friction hardened and ground ways for superior machine
life, gear quality and finish.

Automatic hob shifter can be set to shift a preset increment.

Manual Hob Swivel setting for accurate setting of hob slide.

Manual Grease Lubrication is used to maintain precision accuracies and life
to all bearing surfaces.

Electrical Panel Conforms to Codes set by the National Machine Tool Builders
Association and to ANSI-NEPA 79.

Machines are built to meet or exceed the construction section of ANSI B11.11
Draft 1974 safety requirements for the construction, care and use of gear
cutting machines.

Bourn & Koch Model 25H CNC Four Axis Hobbing Machine, including electrical
equipment and motors as follows:

Hob RPM Servo Motor ("B" Axis)
Work RPM Servo Motor ("C" Axis)
Radial Feed Servo Motor ("X" Axis)
Axial Feed Servo Motor ("Z" Axis)

Electrical Panel and Controls wired for
230/460 Volts, 3 phase, 60 cycle Current