KELLENBERGER Kel-Varia

KELLENBERGER Kel-Varia

This KELLENBERGER Kel-Varia cylindrical grinding machine was manufactured in 1995. It is equipped with a Kellenberger Kelco 90 control and a robust internal grinding attachment with a B-axis for a swiveling grinding head. The machine supports a center height of 175 mm and a maximum distance between centers of 1,000 mm, and is fitted with a belt filter coolant system. Ideal for precision grinding applications. Contact us for more information about this machine.

• Capacity: Center height 175 mm; between centers 1,000 mm
• Equipment: Internal grinding attachment; B-axis swiveling grinding head
• Available grinding heads: R, RS, UR
• R-head swivel range: +30°
• RS/UR-heads, indexing:
• Manual indexing: 180° to -190°, increments of 2.5°
• Automatic indexing: 180° to -90° (or -30°), increments of 2.5°
• B-axis (RS/UR-heads): Swivel range +180° to -190° (some variants limited to approx. +30°); resolution 0.1"
• Workhead (C-axis standard): Swivel range -30° to +120°
• Spindle speed: up to 600 rpm (stepless)
• Spindle taper: MT5; reducing sleeve MT5/MT4
• Adapter flange: MT5 / DIN 55027 size 5
• Torque: 160 Nm
• Max. workpiece between centers: 150 kg
• Workhead with rotating spindle:
• C-axis swivel range: -30° to +120°
• Spindle speed: 5–500 rpm (stepless)
• Spindle taper: MT5
• Torque capacity: 320 Nm (incl. clamping device)
• Max. workpiece between centers: 220 kg

Tailstock
• Taper: MT4
• Quill stroke: 50 mm
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• Micro-adjustment (option): ±150 µm (±0.006 in)

Grinding wheels and internal grinding
• UR-head:
• Left wheel max.: 400 × 63 mm
• Right wheel max. (option): 400 × 50 mm
• Max. peripheral speed: 32 m/s
• R-head:
• Wheel max.: 500 × 100 mm
• Max. peripheral speed: 32 m/s with 7.5 kW motor; 45 m/s with 9.2 kW motor
• RS-head:
• Wheel max.: 500 × 80 mm
• Max. peripheral speed: 32 m/s with 7.5 kW motor; 45 m/s with 9.2 kW motor
• Internal grinding (option/equipment on this machine):
• Mounting bore for high-performance spindles (HJN): 80 mm
• Mounting bore for high-frequency spindles (MFV): 120 mm

Axes and tables
• Z-axis (lower table):
• Max. speed: 15 m/min
• Resolution: 0.1 µm
• Travel (version with 1,000 mm between centers): 1,150 mm
• Upper table swivel range (1,000 mm between centers): 0 to +9°
• X-axis (grinding slide):
• Max. travel: 320 mm
• Max. speed: 7.5 m/min
• Resolution: 0.1 µm

Drive motors
• X-axis slide: 0.94 kW (2,000 rpm)
• Z-axis table: 0.94 kW (2,000 rpm)
• Indexing / B-axis: 0.63 kW (3,000 rpm)
• Grinding spindle UR: 4.4 kW @ 50 Hz (3,000 rpm) / 5.2 kW @ 60 Hz (3,600 rpm)
• Grinding spindle R/RS (7.5 kW version): 7.5 kW @ 50 Hz (1,500 rpm) / 9 kW @ 60 Hz (1,800 rpm)
• Grinding spindle R/RS (9.2 kW version): 9.2 kW @ 50 Hz (1,500 rpm) / 11 kW @ 60 Hz (1,800 rpm)
• Workhead (standard & rotating): 3.1 kW (3,000 rpm)
• Hydraulic pump: 0.37/0.44 kW (1,500/1,800 rpm)
• Hydrostatic pump: 0.37/0.44 kW (1,500/1,800 rpm)

Dimensions, weight, utilities (1,000 mm between centers version)
• Footprint (L × W): 3,600 × 2,000 mm
• Weight: net 5,000 kg; gross 6,000 kg
• Minimum air pressure: 4 bar
• Noise emission: 70 dB(A)

Additional equipment
• Belt filter coolant system

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