UNIVERSAL CYLINDRICAL GRINDING MACHINE M1420X800
1.Table can be tilted for conical grinding operations and scale allows adjustment to desired position
2.Spindle stock can be swivelled 180° for inside grinding operations
3.Main spindle is mounted hydro-dynamically – oil film prevents contact between spindle and bearing
4.Longitudinal table guide and grinding spindle stock cross guide feature V- and flat guiding each
5.Strong reinforcements and generously designed walls make the machine base resistant to temperature fluctuations and deformations
6.Oil film between spindle and bearing reduces the vibrations to a minimum to achieve top results and high accuracy
7.Stepless feed adjustment with selective programmable stop at end of each table movement
8.Precisely adjusted spindle head and solid grinding spindle stock to achieve top processing results at various grinding operations
9.Precisely polished and manually finished guideways in x- and y-axis
10.Hydraulic or manual resetting of grinding spindle stock
11.Longitudinal movement of table is either manually by handwheel or automatically by hydraulic feed
12.Grinding spindle features bearings on both sides and adjustable sliding flat grids
Description
Machine model – original | M1420x500 | M1420x 800 | |
Grinding diameter without steady rest | -> | 8-200 | 8-200 |
Grinding length | -> | 500 | 800 |
Machine model – Knuth | RSM 500 A | RSM 800 | |
Machine construction | |||
Hydraulic tailstock | standard | standard | |
Internal grinding unit’s position | behind the grinding unit | behind the grinding unit | |
Work feed on traverse axis (grinding unit back and forth) | manual | manual | |
TECHNICAL SPECIFICATION (TS) | |||
Working area | |||
Center height | mm | 135 | 135 |
Travel of worktable(max) | mm | 640 | 950 |
Grinding length | mm | 500 | 800 |
Grinding diameter without steady rest | mm | 8-200 | 8-200 |
Grinding diameter with steady rest | mm | 8-60 | 8-60 |
Inside grinding diameter without rest | mm | 25-100 | 25-100 |
Inside grinding diameter with steady rest | mm | 35-100 | 35-100 |
Inside grinding depth | mm | 125 | 125 |
Workpiece weight between centers (max.) | kg | 50 | 50 |
Table swivel range (max.) | ° R / L | 3/9 | 3/7 |
Feeds | |||
Table feed, infinitely variable – longitudinal axis | m/min | 0,1-4 | 0,1-4 |
Traverse per. rev. of headwheel (mm) | mm | 1 | 1 |
Traverse per. div. of headwheel (mm) | mm | 0.005 | 0.005 |
Headstock | |||
Work spindle speeds | 1/min | 25 – 380 | 25 – 380 |
Working headstock swivel range | 0 – 45° | 0 – 45° | |
Spindle taper | MT4 | MT4 | |
Grinding headstock | |||
Inside grinding spindle speed | 1/min | 16,000 | 16,000 |
Grinding headstock swivel range (r+l) | ± ° | 30 | 30 |
Grinding head travel | mm | 200 | 200 |
Grinding wheel peripheral speed | m/s | 35 | 35 |
Grinding wheel speed | 1/min | 1670 | 1670 |
Tailstock | |||
Tailstock taper | MT4 | MT4 | |
Quill travel | mm | 25 | 25 |
Drive capacity | |||
Motor rating main drive | kW | 4 | 4 |
Motor rating of internal grinding unit | kW | share wtih main motor | share wtih main motor |
Motor rating of hydraulic pump | kW | 0.75 | 0.75 |
Motor rating of working spindle | kW | 0.75 | 0.75 |
Motor rating of coolant pump | kW | 0.13 | 0.13 |
Accuracies | |||
Run-out deviation | mm | 0.003 | 0.003 |
Cylindrical deviation(O.D/I.D) | mm | 0.008/0.01 | 0.008/0.01 |
Roughness(O.D/I.D) | µm Ra | 0.32/0.63 | 0.32/0.63 |
Roundness(O.D/I.D) | µm | 1.5/2.5 | 1.5/2.5 |
Measures and weights | |||
Grinding wheels dimensions | mm | 400 x 50 x 203 | 400 x 50 x 203 |
Grindstone dimensions, inside grinding (max.) | mm | 50 x40 x 16 | 50 x40 x 16 |
Grindstone dimensions, inside grinding (min.) | mm | 45 x35 x 10 | 45 x35 x 10 |
Overall dimensions (length x width x height) | m | 2,25 x 1,6 x 1,5 | 2,25 x 1,6 x 1,5 |
Weight | kg | 2,200 | 2,700 |