3-axis CNC milling machine Servomill® KB 1500

universalSK50for heavy-duty machining

Overview
The Servomill® KB 1500 is a bed-type milling machine with servo-conventional feed technology designed for heavy-duty machining of large and complex workpieces. It combines a rigid machine frame, wide guideways and high drive power. The universal milling head swivels in two planes and accepts long milling arbors for horizontal work. Electronic stops and electronic handwheels provide CNC-like repeatability without programming.

Highlights

• Servo feed technology with electronic handwheels
• Preloaded ball screws in all axes
• 3 x 3 electronic stops (per axis)
• Universal milling head with two swivel axes (360°)
• High maximum table load (1,500 kg)
• Infinitely variable spindle speed, SK 50 spindle mount

Working area
Table dimensions: 2.100 mm x 500 mm
Table load capacity (max.): 1.500 kg
Number of T-slots: 4 positions
T-slot (width x spacing): 18 mm x 100 mm

Travels
Travel X-axis: 1.500 mm
Travel Y-axis: 650 mm
Travel Z-axis: 650 mm

Headstock
Speed range, low: 6 1/min - 300 1/min
Speed range, high: 300 1/min - 1.500 1/min
Spindle mount: SK 50
Swivel angle: 360 deg
Spindle middle-to-table distance: 8 mm - 660 mm

Rapid feed
Rapid feed X-axis: 6.000 mm/min
Rapid feed Y-axis: 6.000 mm/min
Rapid feed Z-axis: 3.000 mm/min
Handwheel division X/Z/Y axis: 0,01 mm

Feed
Feed speed X-axis: 3.000 mm/min
Feed speed Y-axis: 3.000 mm/min
Feed speed Z-axis: 2.500 mm/min

Drive capacity
Main motor rating: 15 kW
Coolant pump motor: 0,13 kW
Feed torque X-axis: 18 Nm
Feed torque Y-axis: 18 Nm
Feed torque Z-axis: 23 Nm
Motor rating X-axis: 3,6 kW
Motor rating Y-axis: 4,6 kW
Motor rating Z-axis: 3,6 kW

Measures and weights
Overall dimensions (L x W x H): 3,22 m x 2,42 m x 2,8 m
Weight: 7.000 kg

Design and construction

• Rigid machine bed with large clamping table moving in X and Y
• Heavily ribbed fixed column guiding the compact universal milling head in Z
• Very wide flat guides on Y-axis and large dovetail guide on X-axis for high rigidity
• Large table travel and clamping surface for single large parts or multiple fixtures
• Milling head runs on long flat guides and is supported by a counterbalance; counter support included for horizontal milling with long arbors

Main spindle and drives

• Spindle speeds adjustable in two gear stages via inverter for high torque
• Universal milling head designed for smooth running and stability
• Angle adjustment infinitely variable in the 90° and 45° planes for spatial spindle angles and swivel to horizontal
• Counter-holder guide for use of long milling arbors and simultaneous machining

Feed system

• Powerful servo motors enable infinitely variable feed speeds and rapid traverse
• Preloaded recirculating ball screws in all axes for precise, backlash‑free positioning
• Weight compensation in Z-axis ensures smooth traverse

Equipment

• Control panel with X.Pos 3.2 and extended functions (standard)
• Electronic handwheels and joystick operation for precise axis movement
• Electronic bedstops: 3 positions per axis, set by push-button
• Electronic spindle load display
• Centralised lubrication, coolant system in separate mobile tank, LED work lighting
• Extensive set of accessories available (tooling, arbors, collets)

Additional highlights

• Electronics developed and built in Germany
• Positioning control for predefined travel paths on all axes
• Zero‑backlash preloaded ball screws
• Feed synchronisation with spindle speed possible
• Integrated position indicator with precision glass scales

Technical specifications (summary)

• Model: Servomill® KB 1500
• Table: 2.100 x 500 mm, 4 T-slots (18 mm x 100 mm), max table load 1.500 kg
• Travels: X 1.500 mm / Y 650 mm / Z 650 mm
• Spindle mount: SK 50; Spindle speed ranges: 6 - 300 1/min (low), 300 - 1.500 1/min (high)
• Rapid feeds: X/Y 6.000 mm/min, Z 3.000 mm/min
• Feed speeds: X 3.000 mm/min, Y 3.000 mm/min, Z 2.500 mm/min
• Main motor: 15 kW; Coolant pump: 0,13 kW
• Machine weight / footprint: approx. 7.000 kg; overall dims ~ 3,22 m x 2,42 m x 2,8 m
• Standard control: X.Pos 3.2, electronic handwheels, joystick, spindle load indicator