Cylindrical grinding machine

KELLENBERGER 1500 U

Completely refurbished:
Mechanics, geometry, hydraulics, and electrical components

Wheelhead
Disassembly, cleaning of parts, replacement of worn and defective components, motor overhaul, replacement of bearings, replacement of belts, spindle disassembly, replacement of seals and O-rings, plus adjustment. New paintwork.

Workhead
Disassembly, cleaning of parts, replacement of worn and defective components, motor replacement, replacement of belts. New spindle bearings. New paintwork.

Tailstock
Disassembly, cleaning of parts, replacement of worn and defective components, motor replacement, replacement of belts. New spindle bearings. New paintwork.

Internal grinding attachment
Disassembly, cleaning of parts, replacement of worn and defective components, installation of the support and geometry alignment. New paintwork.

Hydraulics
Disassembly, motor replacement, hose replacement, defective and worn parts replaced. Hydraulic block checked.

X-Axis
Disassembly, replacement of worn items such as O-rings, seals, rings, etc., overhaul of hydraulic piston, regrinding of tables.

Z-Axis
Disassembly, regrinding of tables, replacement of worn and defective parts, overhaul of hydraulic piston, scraping of V and flat guides. New paintwork.

Measuring system
Digital 2-axis display included.

Electrical cabinet
Replacement of motor contactors and relay controls. New wiring. New variable speed drive (frequency inverter) for the workhead.
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TECHNICAL SPECIFICATIONS

Distance between centers: 1500 mm
Distance between centers (workhead to tailstock overhang): 1650 mm
Center height, standard: 125 mm
Center height with riser blocks: 225/250 mm
Maximum grinding diameter: Ø 250 mm
Maximum grinding diameter with riser blocks: 450/500 mm

Table
Usable surface: 2060 x 140 mm
Max. length and width for surface grinding: 1750 x 200 mm
Longitudinal travel, manual or hydraulic: 1750 mm
Manual table movement, 1 handwheel revolution – coarse: 20.006 mm
Manual table movement, 1 handwheel revolution – fine: 2.457 mm
Table speed, continuously via hydraulics: up to 6 m/min
Table swivelling: 6°
Stop and return: 0–5 sec.

Workspindle
Workpiece speeds, continuously variable (electric): 20–400 rpm
Swivelling: 360°
Workspindle taper (internal): MT5

Tailstock
Internal taper, tailstock spindle: MT3
Spindle retraction, manual or hydraulic: 30 mm
Diamond dresser taper (internal): MT0

Universal grinding head
Cross slide travel for wheel: 285 mm
Rapid traverse for wheel slide, front and rear: 40 mm
Grinding spindle speeds: 1500 – 1700 – 2200 – 3600 rpm
Vertical grinding spindle movement, center heights: 125–330 mm
Max. wheel for cylindrical grinding: 400 x 50 x 127 mm
Max. wheel for surface grinding: 250 x 20 x 76 mm
Head swivelling with locking at every 90°: 270°
Wheel feed
1 division of the micrometer drum: 0.005 mm/Ø
Automatic wheel feed, max.: 0.9 mm/Ø

Motors
Grinding spindle motor: 2,900 rpm / 4.0 hp
Workspindle motor: 3,000 rpm / 2.0 hp
Coolant pump motor: 2,850 rpm / 0.12 hp

Internal grinding attachment
Bore: 70 mm
Internal grinding spindle speed Ø70 mm: 14,000 rpm
Internal grinding spindle speed Ø50 mm: 21,000 rpm

Subject to error or omission, the technical information is provided without obligation.

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