Knuth 4HP RSM 1500 C Conventional Cylindrical Grinding Machine 302446

Description

The models of the RSM C series are precision cylindrical grinding machines designed for long and heavier workpieces. The series is suitable for processing individual parts as well as for small series production and offer additional flexibility with the internal grinding device. The classic design with a large machine bed, ground guides, and powerful drives for the work spindle, grinding spindle and hydraulic unit, make these machines a cost-effective solution for the precision grinding of larger workpieces.

Features

• Large machine bed in a heavy design accommodates workpieces with lengths up to 79 inch and diameters up to 12 inch
• Wide, precision-ground guideways ensure maximum accuracy across the entire workpiece length and accommodate high workpiece weights
• The table features large dimensions and swivels in two directions - table movement via hand-wheel or automatically via linear hydraulic feed
• The robust feed valve allows very precise micro-feed control on the X-axis, including a user-adjustable dwell time at the end of the longitudinal table travel
• Hydraulic ratchet feed simplifies exact X-axis positioning, limited by an adjustable zero stop
• The grinding spindle features hydrostatic bearings and provides for maximum precision and surface quality, plus extraordinary tool life and rigidity
• The powerful grinding spindle motor is designed for continuous operation
• The heavy-duty spindle head swivels 30° to the left and to the right; the work spindle head swivels 45°
• Inside grinder included
• Integrated rapid feed on Z axis with manual return

Standard Equipment

• 2-axis position indicator
• Internal grinding equipment
• Open rest
• Closed rest
• 3-jaw chuck, Ø 7.87"
• Coolant system
• Grinding wheel dresser
• Balancing station
• Balancing mandrel
• Grinding wheel flange
• Center point
• Front and rear splatter guard
• Drivers
• Operating tools
• Operator manual
• Test certificate

Specifications

• Working Area
  • Center height: 7”
  • Grinding length: 59”
  • Grinding diameter: 0.3” - 12.6”
  • Inside grinding depth: 4.9”
  • With steady rest: 2”
  • Inside grinding diameter with rest: 1.4” - 3.9”
  • Inside grinding diameter without rest: 1.2” - 3.9”
  • Work piece weight between centers (max.): 330 lbs.
  • Grinding wheel feed (min.): 0.0001”
  • Chuck diameter: 8”
  • Table swivel range (max.): -3° / +7°
  • Wheel speeds: 1.365”/s
  • Work spindle speeds: 50 Hz – 25-220 rpm
• Travels
  • Grinding head travel: 10”
• Feed
  • Table feed, infinitely variable: 0.33 fpm - 13.08 fpm
  • Feed per hand-wheel rotation X-axis: 0.0394”
  • Feed per scale division X-axis: 0.000098”
• Accuracies
  • Run-out deviation: 0.003 mm
  • Cylindrical deviation: 0.00039”
  • Roughness: <=0.32 µm Ra
• Headstock
  • Working spindle taper: 4 MT
  • Working headstock swivel range: 0 deg - 45 deg
• Grinding Headstock
  • Grinding spindle speed: 1670 rpm
  • Inside grinding spindle speed: 10000 rpm
  • Grinding headstock swivel range (r+l): 30°
• Tailstock
  • Tailstock taper: 4 MT
  • Tailstock quill stroke: 1”
• Drive Capacity
  • Motor rating - grinding spindle / hydraulic pump: 4 / 0.6 Hp
  • Motor rating inside grinding: 1.5 Hp
  • Motor rating - headstock / coolant pump: 1 / 0.1 Hp
• Measures and Weights
  • Overall dimensions (length x width x height): 182” x 72” x 60”
  • Weight: 9,460 lbs.
  • Grinding wheel dimensions: 15.75” x 1.97” x 7.99”
  • Grindstone dimensions, inside grinding (max.) (length x width): 2” x 1” x 0.5”
  • Grindstone dimensions, inside grinding (min.) (length x width): 0.7” x 0.8” x 0.2”

Options

• 250812 – 4-jaw chuck K72 200 8 inch with flange for 302446
• 102877 - Diamond dresser shank 
• 103184 - Coolant concentrate 5 ltr 
• 106755 - Live center MT 4
• 106790 - Live center set, MT 4