20″ x 87″ New Sharp Horizontal Vertical Mill Model KMA-3H

  • 3 Way Powerfeed
  • 3 Way Rapid Traverse
  • #50 Taper Spindle
  • Pneumatic Power Locks
  • Variable Frequency Motor
  • Table Backlash Eliminator
  • Automatic Lubrication
  • Pendant Control
  • Coolant System
  • H & G Box Ways
  • Draw Bar
  • Horizontal Head

 

Description

The New Sharp Horizontal Vertical Mill Model KMA-3H has both vertical and horizontal heads. Bed type vertical mills are ideal for milling large work piece or heavy cutting on hard metals. The quill is fixed so it can withstand strong lateral forces. For this model, the entire vertical head moves up to 28” that enables deep drilling and boring operations. The large spindle with #50 taper can remove large amount of metals in one pass. The horizontal head with 7.5 HP motor and #50 taper spindle driven by  AC servo motor on ballscrew performs horizontal milling operations with high accuracy.  This arrangement allows the performing of different type of milling operations on one set up, thus maintain accuracy and increase productivity.

  • 20” x 87” table, 24” x 59” travel
  • Vertical head travel 28”, fixed quill
  • NST #50 taper spindle, 20 HP motor
  • The Horizontal head has NST#50 spindle taper,7.5 HP motor. The head is driven by AC servo motor on precision ball screw for precise and easy operation.
  • Hardened and ground box ways
  • Fully ribbed castings on column, table and saddle to make it a rigid structure
  • Double nut backlash eliminator
  • Eye-level lever control for vertical head rapid traverse

20″ x 87″ New Sharp Horizontal Vertical Mill Model KMA-3HSpecifications:

CAPACITY  
Table Size 19.68″ x 86.62″
T-slots (No.x Width x Pitch) 5 x 0.75 x 3.56
Table Travel : X Longitudinal 59″ (79″ Opt)
Table Travel : Y Cross 23.6″
Vertical Head Travel 27.5″
Vertical Head Travel 25.5″ Up, Down
Vertical, Horizontal Taper, HP #50, #50, 20 HP, 7.5 HP
Spindle Center to Column 21.62″
Spindle Nose to Table 4-31.5 in./min
Distance Between Vertical and Horizontal Spindle 21.5″
TABLE FEEDS, RAPIDS  
Longitudinal Feeds (Variable) 1.12 – 39.37 ipm
Longitudinal Rapids 129-7/8 ipm
Cross Feeds (Variable) 1.12 – 39.37 ipm
Cross Rapids 129-7/8 ipm
VERTICAL HEAD  
Spindle Nose Taper NST #50
Spindle Speeds (12) 45 – 1500 rpm
Vertical Head Travel 25-9/16″
Vertical Head Feeds 0.002-0.008 in/rev
HORIZONTAL HEAD  
Spindle Nose Taper NST #50
Spindle Speed (12) 40 – 1450 rpm
Horizontal Head Travels 25.5 in. (up, down)
Vertical Rapids 150 ipm
MOTORS  
Vertical Spindle
20 HP
Horizontal Spindle 7.5 HP
Table Feed and Rapid 4.7 HP
Vertical Rapid 1.14 HP
Coolant System 0.125 HP
GENERAL  
Floor Area (W x D x H)
14.58 x 8.33 x 9.41 ft.
Approximate Weight 19,140 lbs.
Power Consumption (220V) 60 amps
Power Consumption (440V) 30 amps

20″ x 87″ New Sharp Horizontal Vertical Mill Model KMA-3H Features:

  • Coolant system
  • Auto lubrication system
  • Draw-in bolt (1 pc)
  • Tool box
  • Wired 220V or 440V

20″ x 87″ New Sharp Horizontal Vertical Mill Model KMA-3H Optional Accessories

  • Power drawbar w/ foot pedal control
  • 6 in. “KURT” vise with swivel base D688
  • Halogen work light
  • Outboard support of table to increase longitudinal travel

SOLID CONSTRUCTION, BOX WAY DESIGN
High quality castings are used on base, column, saddle and table. They are stressed relieved to avoid any distortion. All sliding surfaces are hand scraped to ensure full bearing support. All reference surfaces and T slots are precision ground to exact tolerances

HONEYCOMBED RIBBING ON COLUMN
The vertical column of a bed mill usually received most pressure during heavy duty milling operations. Honeycombed pattern ribbings enhance rigidity of the casting.

DOUBLE NUT BACKLASH ELIMINATOR
Backlash on the screw increases after long term usages. The backlash eliminator can correct the situation by adjusting the double nuts instead of the old method of squeezing a split nut.

EYE-LEVEL TRI-LEVER HANDLE VERTICAL HEAD MOVEMENT
Despite the heavy duty vertical spindle head, it is easy to move the head up and down manually using the tri-lever handle for positioning or close milling jobs.

ADDITIONAL CONTROL FOR HORIZONTAL HEAD
The operating panel has additional buttons and switches for the horizontal head with horizontal spindle start, stop and jog. It has manual and auto horizontal head feed, rapid feed with feed override. It also has an electronic handwheel (MPG) for controlling the up and down feed of the head with ease.

ADDITIONAL HORIZONTAL MILLING HEAD
The horizontal milling head with a fixed quill travels along the side of the column driven by AC servo motor on precision ball screw. It is equipped with NST#50 spindle taper, runs on 7.5 HP spindle motor. The head has 12 spindle speeds from 40-1,450 rpm.

 

 

 

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